{ "cases": [ { "id": "1", "inputs": { "annual_yield_kwh_per_kwp": 1300, "capacity_mwp": 10, "construction_months": 12, "construction_start": "2026-10-01", "dc_ac_ratio": 1.25, "degradation_pct": 0.45, "discount_pct": 6, "inflation_pct": 2, "land_hectares": 15, "module_watt": 600, "mounting": "fixed", "operation_years": 25 }, "metrics": [ { "label": "CAPEX", "unit": "GBP", "value": 5335122.72 }, { "label": "Annual OPEX", "unit": "GBP", "value": 124621.32 }, { "label": "LCOE", "unit": "GBP/MWh", "value": 45.793101 } ], "result": { "ac_capacity_mw": 8, "annual_generation_mwh": 13000, "annual_opex": 124621.32, "capex": 5335122.72, "capex_per_wp": 0.533512, "cashflows": [ { "capex": 5335122.72, "discount_factor": 1, "discounted_cost": 5335122.72, "generation_mwh": 0, "opex": 0, "year": 0 }, { "capex": 0, "discount_factor": 0.943396226415, "discounted_cost": 117567.28, "generation_mwh": 13000, "opex": 124621.32, "year": 1 }, { "capex": 0, "discount_factor": 0.889996440014, "discounted_cost": 113130.78, "generation_mwh": 12941.5, "opex": 127113.75, "year": 2 }, { "capex": 0, "discount_factor": 0.839619283032, "discounted_cost": 108861.69, "generation_mwh": 12883.26325, "opex": 129656.02, "year": 3 }, { "capex": 0, "discount_factor": 0.792093663238, "discounted_cost": 104753.71, "generation_mwh": 12825.288565, "opex": 132249.14, "year": 4 }, { "capex": 0, "discount_factor": 0.747258172866, "discounted_cost": 100800.74, "generation_mwh": 12767.574767, "opex": 134894.12, "year": 5 }, { "capex": 0, "discount_factor": 0.70496054044, "discounted_cost": 96996.93, "generation_mwh": 12710.12068, "opex": 137592.01, "year": 6 }, { "capex": 0, "discount_factor": 0.665057113622, "discounted_cost": 93336.67, "generation_mwh": 12652.925137, "opex": 140343.85, "year": 7 }, { "capex": 0, "discount_factor": 0.627412371342, "discounted_cost": 89814.53, "generation_mwh": 12595.986974, "opex": 143150.72, "year": 8 }, { "capex": 0, "discount_factor": 0.59189846353, "discounted_cost": 86425.31, "generation_mwh": 12539.305033, "opex": 146013.74, "year": 9 }, { "capex": 0, "discount_factor": 0.558394776915, "discounted_cost": 83163.97, "generation_mwh": 12482.87816, "opex": 148934.01, "year": 10 }, { "capex": 0, "discount_factor": 0.526787525392, "discounted_cost": 80025.71, "generation_mwh": 12426.705208, "opex": 151912.69, "year": 11 }, { "capex": 0, "discount_factor": 0.496969363577, "discounted_cost": 77005.87, "generation_mwh": 12370.785035, "opex": 154950.95, "year": 12 }, { "capex": 0, "discount_factor": 0.468839022242, "discounted_cost": 74099.99, "generation_mwh": 12315.116502, "opex": 158049.97, "year": 13 }, { "capex": 0, "discount_factor": 0.44230096438, "discounted_cost": 71303.77, "generation_mwh": 12259.698478, "opex": 161210.96, "year": 14 }, { "capex": 0, "discount_factor": 0.417265060736, "discounted_cost": 68613.06, "generation_mwh": 12204.529835, "opex": 164435.18, "year": 15 }, { "capex": 0, "discount_factor": 0.393646283713, "discounted_cost": 66023.89, "generation_mwh": 12149.609451, "opex": 167723.89, "year": 16 }, { "capex": 0, "discount_factor": 0.371364418597, "discounted_cost": 63532.42, "generation_mwh": 12094.936208, "opex": 171078.37, "year": 17 }, { "capex": 0, "discount_factor": 0.350343791129, "discounted_cost": 61134.97, "generation_mwh": 12040.508995, "opex": 174499.93, "year": 18 }, { "capex": 0, "discount_factor": 0.330513010499, "discounted_cost": 58827.99, "generation_mwh": 11986.326705, "opex": 177989.93, "year": 19 }, { "capex": 0, "discount_factor": 0.311804726886, "discounted_cost": 56608.06, "generation_mwh": 11932.388235, "opex": 181549.73, "year": 20 }, { "capex": 0, "discount_factor": 0.294155402723, "discounted_cost": 54471.91, "generation_mwh": 11878.692488, "opex": 185180.72, "year": 21 }, { "capex": 0, "discount_factor": 0.277505096908, "discounted_cost": 52416.37, "generation_mwh": 11825.238371, "opex": 188884.34, "year": 22 }, { "capex": 0, "discount_factor": 0.261797261234, "discounted_cost": 50438.39, "generation_mwh": 11772.024799, "opex": 192662.03, "year": 23 }, { "capex": 0, "discount_factor": 0.246978548334, "discounted_cost": 48535.06, "generation_mwh": 11719.050687, "opex": 196515.27, "year": 24 }, { "capex": 0, "discount_factor": 0.232998630504, "discounted_cost": 95422.82, "generation_mwh": 11666.314959, "opex": 409542.41, "year": 25 } ], "currency": "GBP", "discounted_lifecycle_cost": 7308434.61, "lcoe_per_mwh": 45.793101, "lifetime_opex": 4200755.04, "lines": [ { "base_value": 1900000, "category": "capex", "expression": "capacity_wp * modules_per_w", "id": "modules", "label": "PV modules", "overridden": false, "unit": "currency", "value": 1900000 }, { "base_value": 408000, "category": "capex", "expression": "ac_capacity_w * inverters_per_wac", "id": "inverters", "label": "Inverters · AC basis", "overridden": false, "unit": "currency", "value": 408000 }, { "base_value": 730000, "category": "capex", "expression": "capacity_wp * (is_fixed * mounting_fixed_per_wp + is_tracker * mounting_tracker_per_wp)", "id": "mounting_structure", "label": "Mounting structure", "overridden": false, "unit": "currency", "value": 730000 }, { "base_value": 670000, "category": "capex", "expression": "capacity_wp * electrical_per_wp", "id": "electrical", "label": "Electrical balance of plant", "overridden": false, "unit": "currency", "value": 670000 }, { "base_value": 360000, "category": "capex", "expression": "capacity_wp * civil_per_wp", "id": "civil", "label": "Civil works", "overridden": false, "unit": "currency", "value": 360000 }, { "base_value": 560000, "category": "capex", "expression": "grid_connection", "id": "grid", "label": "Grid connection allowance", "overridden": false, "unit": "currency", "value": 560000 }, { "base_value": 210000, "category": "capex", "expression": "capacity_wp * development_per_wp", "id": "development", "label": "Development", "overridden": false, "unit": "currency", "value": 210000 }, { "base_value": 148096, "category": "capex", "expression": "(modules + inverters + mounting_structure + electrical + civil + grid) * engineering_pct / 100", "id": "engineering", "label": "Engineering · construction base", "overridden": false, "unit": "currency", "value": 148096 }, { "base_value": 349026.72, "category": "capex", "expression": "(modules + inverters + mounting_structure + electrical + civil + grid + development + engineering) * contingency_pct / 100", "id": "contingency", "label": "Contingency · pre-contingency CAPEX", "overridden": false, "unit": "currency", "value": 349026.72 }, { "base_value": 15750, "category": "opex", "expression": "land_hectares * land_per_ha_year", "id": "land_lease", "label": "Annual land lease", "overridden": false, "unit": "currency/year", "value": 15750 }, { "base_value": 95000, "category": "opex", "expression": "capacity_kwp * om_per_kwp_year", "id": "operations", "label": "Annual operations and maintenance", "overridden": false, "unit": "currency/year", "value": 95000 }, { "base_value": 13871.32, "category": "opex", "expression": "(modules + inverters + mounting_structure + electrical + civil + grid + development + engineering + contingency) * insurance_pct / 100", "id": "insurance", "label": "Annual insurance · total CAPEX", "overridden": false, "unit": "currency/year", "value": 13871.32 }, { "base_value": 130000, "category": "reserve", "expression": "capacity_kwp * decommission_per_kwp", "id": "decommission", "label": "Final-year decommissioning provision", "overridden": false, "unit": "currency", "value": 130000 } ], "module_count": 16667, "provenance": { "method_version": "solstice-pv-1.0.0", "model_id": "model-solar-v1", "model_version": 1, "rate_card_id": "rate-gb-2026", "rate_card_version": 1, "rate_source": "Original synthetic Solstice Cost Studio demonstration values, created 2026-10-07. Independently chosen examples; not researched market prices, supplier quotations, currency conversions, or forecasts. Replace with reviewed project-specific rates before relying on an estimate.", "source_kind": "illustrative" }, "total_lifetime_cost": 9535877.76, "warnings": [ "ILLUSTRATIVE RATES: original synthetic demonstration values, not market prices or supplier quotations. Replace with reviewed project-specific rates before relying on this estimate.", "All CAPEX is placed at year 0; construction duration is planning metadata. Construction drawdowns, financing, tax, revenue, and replacement schedules are not modeled.", "Year 1 uses the entered yield. Tracker selection changes mounting cost only; adjust yield separately for a project-specific tracker energy case.", "The decommissioning provision is paid once in the final operating year and escalates with inflation; it is included in that year’s OPEX and lifetime OPEX.", "Module count rounds up to a whole module. Per-watt costs and generation use the requested DC capacity, without increasing capacity to the rounded module count." ] }, "rows": [ { "capex": 5335122.72, "discount_factor": 1, "discounted_cost": 5335122.72, "generation_mwh": 0, "opex": 0, "year": 0 }, { "capex": 0, "discount_factor": 0.943396226415, "discounted_cost": 117567.28, "generation_mwh": 13000, "opex": 124621.32, "year": 1 }, { "capex": 0, "discount_factor": 0.889996440014, "discounted_cost": 113130.78, "generation_mwh": 12941.5, "opex": 127113.75, "year": 2 }, { "capex": 0, "discount_factor": 0.839619283032, "discounted_cost": 108861.69, "generation_mwh": 12883.26325, "opex": 129656.02, "year": 3 }, { "capex": 0, "discount_factor": 0.792093663238, "discounted_cost": 104753.71, "generation_mwh": 12825.288565, "opex": 132249.14, "year": 4 }, { "capex": 0, "discount_factor": 0.747258172866, "discounted_cost": 100800.74, "generation_mwh": 12767.574767, "opex": 134894.12, "year": 5 }, { "capex": 0, "discount_factor": 0.70496054044, "discounted_cost": 96996.93, "generation_mwh": 12710.12068, "opex": 137592.01, "year": 6 }, { "capex": 0, "discount_factor": 0.665057113622, "discounted_cost": 93336.67, "generation_mwh": 12652.925137, "opex": 140343.85, "year": 7 }, { "capex": 0, "discount_factor": 0.627412371342, "discounted_cost": 89814.53, "generation_mwh": 12595.986974, "opex": 143150.72, "year": 8 }, { "capex": 0, "discount_factor": 0.59189846353, "discounted_cost": 86425.31, "generation_mwh": 12539.305033, "opex": 146013.74, "year": 9 }, { "capex": 0, "discount_factor": 0.558394776915, "discounted_cost": 83163.97, "generation_mwh": 12482.87816, "opex": 148934.01, "year": 10 }, { "capex": 0, "discount_factor": 0.526787525392, "discounted_cost": 80025.71, "generation_mwh": 12426.705208, "opex": 151912.69, "year": 11 }, { "capex": 0, "discount_factor": 0.496969363577, "discounted_cost": 77005.87, "generation_mwh": 12370.785035, "opex": 154950.95, "year": 12 }, { "capex": 0, "discount_factor": 0.468839022242, "discounted_cost": 74099.99, "generation_mwh": 12315.116502, "opex": 158049.97, "year": 13 }, { "capex": 0, "discount_factor": 0.44230096438, "discounted_cost": 71303.77, "generation_mwh": 12259.698478, "opex": 161210.96, "year": 14 }, { "capex": 0, "discount_factor": 0.417265060736, "discounted_cost": 68613.06, "generation_mwh": 12204.529835, "opex": 164435.18, "year": 15 }, { "capex": 0, "discount_factor": 0.393646283713, "discounted_cost": 66023.89, "generation_mwh": 12149.609451, "opex": 167723.89, "year": 16 }, { "capex": 0, "discount_factor": 0.371364418597, "discounted_cost": 63532.42, "generation_mwh": 12094.936208, "opex": 171078.37, "year": 17 }, { "capex": 0, "discount_factor": 0.350343791129, "discounted_cost": 61134.97, "generation_mwh": 12040.508995, "opex": 174499.93, "year": 18 }, { "capex": 0, "discount_factor": 0.330513010499, "discounted_cost": 58827.99, "generation_mwh": 11986.326705, "opex": 177989.93, "year": 19 }, { "capex": 0, "discount_factor": 0.311804726886, "discounted_cost": 56608.06, "generation_mwh": 11932.388235, "opex": 181549.73, "year": 20 }, { "capex": 0, "discount_factor": 0.294155402723, "discounted_cost": 54471.91, "generation_mwh": 11878.692488, "opex": 185180.72, "year": 21 }, { "capex": 0, "discount_factor": 0.277505096908, "discounted_cost": 52416.37, "generation_mwh": 11825.238371, "opex": 188884.34, "year": 22 }, { "capex": 0, "discount_factor": 0.261797261234, "discounted_cost": 50438.39, "generation_mwh": 11772.024799, "opex": 192662.03, "year": 23 }, { "capex": 0, "discount_factor": 0.246978548334, "discounted_cost": 48535.06, "generation_mwh": 11719.050687, "opex": 196515.27, "year": 24 }, { "capex": 0, "discount_factor": 0.232998630504, "discounted_cost": 95422.82, "generation_mwh": 11666.314959, "opex": 409542.41, "year": 25 } ], "title": "10 MWp · fixed" }, { "id": "2", "inputs": { "annual_yield_kwh_per_kwp": 1300, "capacity_mwp": 10, "construction_months": 12, "construction_start": "2026-10-01", "dc_ac_ratio": 1.25, "degradation_pct": 0.45, "discount_pct": 6, "inflation_pct": 2, "land_hectares": 15, "module_watt": 600, "mounting": "tracker", "operation_years": 25 }, "metrics": [ { "label": "CAPEX", "unit": "GBP", "value": 5776818.72 }, { "label": "Annual OPEX", "unit": "GBP", "value": 125769.73 }, { "label": "LCOE", "unit": "GBP/MWh", "value": 48.671802 } ], "result": { "ac_capacity_mw": 8, "annual_generation_mwh": 13000, "annual_opex": 125769.73, "capex": 5776818.72, "capex_per_wp": 0.577682, "cashflows": [ { "capex": 5776818.72, "discount_factor": 1, "discounted_cost": 5776818.72, "generation_mwh": 0, "opex": 0, "year": 0 }, { "capex": 0, "discount_factor": 0.943396226415, "discounted_cost": 118650.69, "generation_mwh": 13000, "opex": 125769.73, "year": 1 }, { "capex": 0, "discount_factor": 0.889996440014, "discounted_cost": 114173.3, "generation_mwh": 12941.5, "opex": 128285.12, "year": 2 }, { "capex": 0, "discount_factor": 0.839619283032, "discounted_cost": 109864.88, "generation_mwh": 12883.26325, "opex": 130850.83, "year": 3 }, { "capex": 0, "discount_factor": 0.792093663238, "discounted_cost": 105719.03, "generation_mwh": 12825.288565, "opex": 133467.84, "year": 4 }, { "capex": 0, "discount_factor": 0.747258172866, "discounted_cost": 101729.63, "generation_mwh": 12767.574767, "opex": 136137.2, "year": 5 }, { "capex": 0, "discount_factor": 0.70496054044, "discounted_cost": 97890.78, "generation_mwh": 12710.12068, "opex": 138859.94, "year": 6 }, { "capex": 0, "discount_factor": 0.665057113622, "discounted_cost": 94196.79, "generation_mwh": 12652.925137, "opex": 141637.14, "year": 7 }, { "capex": 0, "discount_factor": 0.627412371342, "discounted_cost": 90642.19, "generation_mwh": 12595.986974, "opex": 144469.88, "year": 8 }, { "capex": 0, "discount_factor": 0.59189846353, "discounted_cost": 87221.73, "generation_mwh": 12539.305033, "opex": 147359.28, "year": 9 }, { "capex": 0, "discount_factor": 0.558394776915, "discounted_cost": 83930.35, "generation_mwh": 12482.87816, "opex": 150306.47, "year": 10 }, { "capex": 0, "discount_factor": 0.526787525392, "discounted_cost": 80763.16, "generation_mwh": 12426.705208, "opex": 153312.6, "year": 11 }, { "capex": 0, "discount_factor": 0.496969363577, "discounted_cost": 77715.5, "generation_mwh": 12370.785035, "opex": 156378.85, "year": 12 }, { "capex": 0, "discount_factor": 0.468839022242, "discounted_cost": 74782.84, "generation_mwh": 12315.116502, "opex": 159506.43, "year": 13 }, { "capex": 0, "discount_factor": 0.44230096438, "discounted_cost": 71960.84, "generation_mwh": 12259.698478, "opex": 162696.55, "year": 14 }, { "capex": 0, "discount_factor": 0.417265060736, "discounted_cost": 69245.34, "generation_mwh": 12204.529835, "opex": 165950.49, "year": 15 }, { "capex": 0, "discount_factor": 0.393646283713, "discounted_cost": 66632.31, "generation_mwh": 12149.609451, "opex": 169269.5, "year": 16 }, { "capex": 0, "discount_factor": 0.371364418597, "discounted_cost": 64117.88, "generation_mwh": 12094.936208, "opex": 172654.89, "year": 17 }, { "capex": 0, "discount_factor": 0.350343791129, "discounted_cost": 61698.34, "generation_mwh": 12040.508995, "opex": 176107.98, "year": 18 }, { "capex": 0, "discount_factor": 0.330513010499, "discounted_cost": 59370.1, "generation_mwh": 11986.326705, "opex": 179630.14, "year": 19 }, { "capex": 0, "discount_factor": 0.311804726886, "discounted_cost": 57129.72, "generation_mwh": 11932.388235, "opex": 183222.75, "year": 20 }, { "capex": 0, "discount_factor": 0.294155402723, "discounted_cost": 54973.88, "generation_mwh": 11878.692488, "opex": 186887.2, "year": 21 }, { "capex": 0, "discount_factor": 0.277505096908, "discounted_cost": 52899.39, "generation_mwh": 11825.238371, "opex": 190624.94, "year": 22 }, { "capex": 0, "discount_factor": 0.261797261234, "discounted_cost": 50903.19, "generation_mwh": 11772.024799, "opex": 194437.44, "year": 23 }, { "capex": 0, "discount_factor": 0.246978548334, "discounted_cost": 48982.32, "generation_mwh": 11719.050687, "opex": 198326.19, "year": 24 }, { "capex": 0, "discount_factor": 0.232998630504, "discounted_cost": 95853.2, "generation_mwh": 11666.314959, "opex": 411389.56, "year": 25 } ], "currency": "GBP", "discounted_lifecycle_cost": 7767866.1, "lcoe_per_mwh": 48.671802, "lifetime_opex": 4237538.95, "lines": [ { "base_value": 1900000, "category": "capex", "expression": "capacity_wp * modules_per_w", "id": "modules", "label": "PV modules", "overridden": false, "unit": "currency", "value": 1900000 }, { "base_value": 408000, "category": "capex", "expression": "ac_capacity_w * inverters_per_wac", "id": "inverters", "label": "Inverters · AC basis", "overridden": false, "unit": "currency", "value": 408000 }, { "base_value": 1130000, "category": "capex", "expression": "capacity_wp * (is_fixed * mounting_fixed_per_wp + is_tracker * mounting_tracker_per_wp)", "id": "mounting_structure", "label": "Mounting structure", "overridden": false, "unit": "currency", "value": 1130000 }, { "base_value": 670000, "category": "capex", "expression": "capacity_wp * electrical_per_wp", "id": "electrical", "label": "Electrical balance of plant", "overridden": false, "unit": "currency", "value": 670000 }, { "base_value": 360000, "category": "capex", "expression": "capacity_wp * civil_per_wp", "id": "civil", "label": "Civil works", "overridden": false, "unit": "currency", "value": 360000 }, { "base_value": 560000, "category": "capex", "expression": "grid_connection", "id": "grid", "label": "Grid connection allowance", "overridden": false, "unit": "currency", "value": 560000 }, { "base_value": 210000, "category": "capex", "expression": "capacity_wp * development_per_wp", "id": "development", "label": "Development", "overridden": false, "unit": "currency", "value": 210000 }, { "base_value": 160896, "category": "capex", "expression": "(modules + inverters + mounting_structure + electrical + civil + grid) * engineering_pct / 100", "id": "engineering", "label": "Engineering · construction base", "overridden": false, "unit": "currency", "value": 160896 }, { "base_value": 377922.72, "category": "capex", "expression": "(modules + inverters + mounting_structure + electrical + civil + grid + development + engineering) * contingency_pct / 100", "id": "contingency", "label": "Contingency · pre-contingency CAPEX", "overridden": false, "unit": "currency", "value": 377922.72 }, { "base_value": 15750, "category": "opex", "expression": "land_hectares * land_per_ha_year", "id": "land_lease", "label": "Annual land lease", "overridden": false, "unit": "currency/year", "value": 15750 }, { "base_value": 95000, "category": "opex", "expression": "capacity_kwp * om_per_kwp_year", "id": "operations", "label": "Annual operations and maintenance", "overridden": false, "unit": "currency/year", "value": 95000 }, { "base_value": 15019.73, "category": "opex", "expression": "(modules + inverters + mounting_structure + electrical + civil + grid + development + engineering + contingency) * insurance_pct / 100", "id": "insurance", "label": "Annual insurance · total CAPEX", "overridden": false, "unit": "currency/year", "value": 15019.73 }, { "base_value": 130000, "category": "reserve", "expression": "capacity_kwp * decommission_per_kwp", "id": "decommission", "label": "Final-year decommissioning provision", "overridden": false, "unit": "currency", "value": 130000 } ], "module_count": 16667, "provenance": { "method_version": "solstice-pv-1.0.0", "model_id": "model-solar-v1", "model_version": 1, "rate_card_id": "rate-gb-2026", "rate_card_version": 1, "rate_source": "Original synthetic Solstice Cost Studio demonstration values, created 2026-10-07. Independently chosen examples; not researched market prices, supplier quotations, currency conversions, or forecasts. Replace with reviewed project-specific rates before relying on an estimate.", "source_kind": "illustrative" }, "total_lifetime_cost": 10014357.67, "warnings": [ "ILLUSTRATIVE RATES: original synthetic demonstration values, not market prices or supplier quotations. Replace with reviewed project-specific rates before relying on this estimate.", "All CAPEX is placed at year 0; construction duration is planning metadata. Construction drawdowns, financing, tax, revenue, and replacement schedules are not modeled.", "Year 1 uses the entered yield. Tracker selection changes mounting cost only; adjust yield separately for a project-specific tracker energy case.", "The decommissioning provision is paid once in the final operating year and escalates with inflation; it is included in that year’s OPEX and lifetime OPEX.", "Module count rounds up to a whole module. Per-watt costs and generation use the requested DC capacity, without increasing capacity to the rounded module count." ] }, "rows": [ { "capex": 5776818.72, "discount_factor": 1, "discounted_cost": 5776818.72, "generation_mwh": 0, "opex": 0, "year": 0 }, { "capex": 0, "discount_factor": 0.943396226415, "discounted_cost": 118650.69, "generation_mwh": 13000, "opex": 125769.73, "year": 1 }, { "capex": 0, "discount_factor": 0.889996440014, "discounted_cost": 114173.3, "generation_mwh": 12941.5, "opex": 128285.12, "year": 2 }, { "capex": 0, "discount_factor": 0.839619283032, "discounted_cost": 109864.88, "generation_mwh": 12883.26325, "opex": 130850.83, "year": 3 }, { "capex": 0, "discount_factor": 0.792093663238, "discounted_cost": 105719.03, "generation_mwh": 12825.288565, "opex": 133467.84, "year": 4 }, { "capex": 0, "discount_factor": 0.747258172866, "discounted_cost": 101729.63, "generation_mwh": 12767.574767, "opex": 136137.2, "year": 5 }, { "capex": 0, "discount_factor": 0.70496054044, "discounted_cost": 97890.78, "generation_mwh": 12710.12068, "opex": 138859.94, "year": 6 }, { "capex": 0, "discount_factor": 0.665057113622, "discounted_cost": 94196.79, "generation_mwh": 12652.925137, "opex": 141637.14, "year": 7 }, { "capex": 0, "discount_factor": 0.627412371342, "discounted_cost": 90642.19, "generation_mwh": 12595.986974, "opex": 144469.88, "year": 8 }, { "capex": 0, "discount_factor": 0.59189846353, "discounted_cost": 87221.73, "generation_mwh": 12539.305033, "opex": 147359.28, "year": 9 }, { "capex": 0, "discount_factor": 0.558394776915, "discounted_cost": 83930.35, "generation_mwh": 12482.87816, "opex": 150306.47, "year": 10 }, { "capex": 0, "discount_factor": 0.526787525392, "discounted_cost": 80763.16, "generation_mwh": 12426.705208, "opex": 153312.6, "year": 11 }, { "capex": 0, "discount_factor": 0.496969363577, "discounted_cost": 77715.5, "generation_mwh": 12370.785035, "opex": 156378.85, "year": 12 }, { "capex": 0, "discount_factor": 0.468839022242, "discounted_cost": 74782.84, "generation_mwh": 12315.116502, "opex": 159506.43, "year": 13 }, { "capex": 0, "discount_factor": 0.44230096438, "discounted_cost": 71960.84, "generation_mwh": 12259.698478, "opex": 162696.55, "year": 14 }, { "capex": 0, "discount_factor": 0.417265060736, "discounted_cost": 69245.34, "generation_mwh": 12204.529835, "opex": 165950.49, "year": 15 }, { "capex": 0, "discount_factor": 0.393646283713, "discounted_cost": 66632.31, "generation_mwh": 12149.609451, "opex": 169269.5, "year": 16 }, { "capex": 0, "discount_factor": 0.371364418597, "discounted_cost": 64117.88, "generation_mwh": 12094.936208, "opex": 172654.89, "year": 17 }, { "capex": 0, "discount_factor": 0.350343791129, "discounted_cost": 61698.34, "generation_mwh": 12040.508995, "opex": 176107.98, "year": 18 }, { "capex": 0, "discount_factor": 0.330513010499, "discounted_cost": 59370.1, "generation_mwh": 11986.326705, "opex": 179630.14, "year": 19 }, { "capex": 0, "discount_factor": 0.311804726886, "discounted_cost": 57129.72, "generation_mwh": 11932.388235, "opex": 183222.75, "year": 20 }, { "capex": 0, "discount_factor": 0.294155402723, "discounted_cost": 54973.88, "generation_mwh": 11878.692488, "opex": 186887.2, "year": 21 }, { "capex": 0, "discount_factor": 0.277505096908, "discounted_cost": 52899.39, "generation_mwh": 11825.238371, "opex": 190624.94, "year": 22 }, { "capex": 0, "discount_factor": 0.261797261234, "discounted_cost": 50903.19, "generation_mwh": 11772.024799, "opex": 194437.44, "year": 23 }, { "capex": 0, "discount_factor": 0.246978548334, "discounted_cost": 48982.32, "generation_mwh": 11719.050687, "opex": 198326.19, "year": 24 }, { "capex": 0, "discount_factor": 0.232998630504, "discounted_cost": 95853.2, "generation_mwh": 11666.314959, "opex": 411389.56, "year": 25 } ], "title": "10 MWp · tracker" }, { "id": "3", "inputs": { "annual_yield_kwh_per_kwp": 1300, "capacity_mwp": 50, "construction_months": 12, "construction_start": "2026-10-01", "dc_ac_ratio": 1.25, "degradation_pct": 0.45, "discount_pct": 6, "inflation_pct": 2, "land_hectares": 75, "module_watt": 600, "mounting": "fixed", "operation_years": 25 }, "metrics": [ { "label": "CAPEX", "unit": "GBP", "value": 24202116 }, { "label": "Annual OPEX", "unit": "GBP", "value": 616675.5 }, { "label": "LCOE", "unit": "GBP/MWh", "value": 42.568957 } ], "result": { "ac_capacity_mw": 40, "annual_generation_mwh": 65000, "annual_opex": 616675.5, "capex": 24202116, "capex_per_wp": 0.484042, "cashflows": [ { "capex": 24202116, "discount_factor": 1, "discounted_cost": 24202116, "generation_mwh": 0, "opex": 0, "year": 0 }, { "capex": 0, "discount_factor": 0.943396226415, "discounted_cost": 581769.34, "generation_mwh": 65000, "opex": 616675.5, "year": 1 }, { "capex": 0, "discount_factor": 0.889996440014, "discounted_cost": 559815.78, "generation_mwh": 64707.5, "opex": 629009.01, "year": 2 }, { "capex": 0, "discount_factor": 0.839619283032, "discounted_cost": 538690.66, "generation_mwh": 64416.31625, "opex": 641589.19, "year": 3 }, { "capex": 0, "discount_factor": 0.792093663238, "discounted_cost": 518362.71, "generation_mwh": 64126.442827, "opex": 654420.98, "year": 4 }, { "capex": 0, "discount_factor": 0.747258172866, "discounted_cost": 498801.85, "generation_mwh": 63837.873834, "opex": 667509.4, "year": 5 }, { "capex": 0, "discount_factor": 0.70496054044, "discounted_cost": 479979.14, "generation_mwh": 63550.603402, "opex": 680859.58, "year": 6 }, { "capex": 0, "discount_factor": 0.665057113622, "discounted_cost": 461866.72, "generation_mwh": 63264.625687, "opex": 694476.77, "year": 7 }, { "capex": 0, "discount_factor": 0.627412371342, "discounted_cost": 444437.79, "generation_mwh": 62979.934871, "opex": 708366.31, "year": 8 }, { "capex": 0, "discount_factor": 0.59189846353, "discounted_cost": 427666.55, "generation_mwh": 62696.525164, "opex": 722533.64, "year": 9 }, { "capex": 0, "discount_factor": 0.558394776915, "discounted_cost": 411528.19, "generation_mwh": 62414.390801, "opex": 736984.31, "year": 10 }, { "capex": 0, "discount_factor": 0.526787525392, "discounted_cost": 395998.82, "generation_mwh": 62133.526042, "opex": 751724, "year": 11 }, { "capex": 0, "discount_factor": 0.496969363577, "discounted_cost": 381055.47, "generation_mwh": 61853.925175, "opex": 766758.48, "year": 12 }, { "capex": 0, "discount_factor": 0.468839022242, "discounted_cost": 366676.02, "generation_mwh": 61575.582512, "opex": 782093.64, "year": 13 }, { "capex": 0, "discount_factor": 0.44230096438, "discounted_cost": 352839.19, "generation_mwh": 61298.49239, "opex": 797735.52, "year": 14 }, { "capex": 0, "discount_factor": 0.417265060736, "discounted_cost": 339524.5, "generation_mwh": 61022.649175, "opex": 813690.23, "year": 15 }, { "capex": 0, "discount_factor": 0.393646283713, "discounted_cost": 326712.26, "generation_mwh": 60748.047253, "opex": 829964.03, "year": 16 }, { "capex": 0, "discount_factor": 0.371364418597, "discounted_cost": 314383.49, "generation_mwh": 60474.681041, "opex": 846563.31, "year": 17 }, { "capex": 0, "discount_factor": 0.350343791129, "discounted_cost": 302519.96, "generation_mwh": 60202.544976, "opex": 863494.58, "year": 18 }, { "capex": 0, "discount_factor": 0.330513010499, "discounted_cost": 291104.12, "generation_mwh": 59931.633524, "opex": 880764.47, "year": 19 }, { "capex": 0, "discount_factor": 0.311804726886, "discounted_cost": 280119.06, "generation_mwh": 59661.941173, "opex": 898379.76, "year": 20 }, { "capex": 0, "discount_factor": 0.294155402723, "discounted_cost": 269548.53, "generation_mwh": 59393.462438, "opex": 916347.36, "year": 21 }, { "capex": 0, "discount_factor": 0.277505096908, "discounted_cost": 259376.88, "generation_mwh": 59126.191857, "opex": 934674.3, "year": 22 }, { "capex": 0, "discount_factor": 0.261797261234, "discounted_cost": 249589.08, "generation_mwh": 58860.123993, "opex": 953367.79, "year": 23 }, { "capex": 0, "discount_factor": 0.246978548334, "discounted_cost": 240170.62, "generation_mwh": 58595.253435, "opex": 972435.14, "year": 24 }, { "capex": 0, "discount_factor": 0.232998630504, "discounted_cost": 474703.97, "generation_mwh": 58331.574795, "opex": 2037368.06, "year": 25 } ], "currency": "GBP", "discounted_lifecycle_cost": 33969356.69, "lcoe_per_mwh": 42.568957, "lifetime_opex": 20797785.36, "lines": [ { "base_value": 9500000, "category": "capex", "expression": "capacity_wp * modules_per_w", "id": "modules", "label": "PV modules", "overridden": false, "unit": "currency", "value": 9500000 }, { "base_value": 2040000, "category": "capex", "expression": "ac_capacity_w * inverters_per_wac", "id": "inverters", "label": "Inverters · AC basis", "overridden": false, "unit": "currency", "value": 2040000 }, { "base_value": 3650000, "category": "capex", "expression": "capacity_wp * (is_fixed * mounting_fixed_per_wp + is_tracker * mounting_tracker_per_wp)", "id": "mounting_structure", "label": "Mounting structure", "overridden": false, "unit": "currency", "value": 3650000 }, { "base_value": 3350000, "category": "capex", "expression": "capacity_wp * electrical_per_wp", "id": "electrical", "label": "Electrical balance of plant", "overridden": false, "unit": "currency", "value": 3350000 }, { "base_value": 1800000, "category": "capex", "expression": "capacity_wp * civil_per_wp", "id": "civil", "label": "Civil works", "overridden": false, "unit": "currency", "value": 1800000 }, { "base_value": 560000, "category": "capex", "expression": "grid_connection", "id": "grid", "label": "Grid connection allowance", "overridden": false, "unit": "currency", "value": 560000 }, { "base_value": 1050000, "category": "capex", "expression": "capacity_wp * development_per_wp", "id": "development", "label": "Development", "overridden": false, "unit": "currency", "value": 1050000 }, { "base_value": 668800, "category": "capex", "expression": "(modules + inverters + mounting_structure + electrical + civil + grid) * engineering_pct / 100", "id": "engineering", "label": "Engineering · construction base", "overridden": false, "unit": "currency", "value": 668800 }, { "base_value": 1583316, "category": "capex", "expression": "(modules + inverters + mounting_structure + electrical + civil + grid + development + engineering) * contingency_pct / 100", "id": "contingency", "label": "Contingency · pre-contingency CAPEX", "overridden": false, "unit": "currency", "value": 1583316 }, { "base_value": 78750, "category": "opex", "expression": "land_hectares * land_per_ha_year", "id": "land_lease", "label": "Annual land lease", "overridden": false, "unit": "currency/year", "value": 78750 }, { "base_value": 475000, "category": "opex", "expression": "capacity_kwp * om_per_kwp_year", "id": "operations", "label": "Annual operations and maintenance", "overridden": false, "unit": "currency/year", "value": 475000 }, { "base_value": 62925.5, "category": "opex", "expression": "(modules + inverters + mounting_structure + electrical + civil + grid + development + engineering + contingency) * insurance_pct / 100", "id": "insurance", "label": "Annual insurance · total CAPEX", "overridden": false, "unit": "currency/year", "value": 62925.5 }, { "base_value": 650000, "category": "reserve", "expression": "capacity_kwp * decommission_per_kwp", "id": "decommission", "label": "Final-year decommissioning provision", "overridden": false, "unit": "currency", "value": 650000 } ], "module_count": 83334, "provenance": { "method_version": "solstice-pv-1.0.0", "model_id": "model-solar-v1", "model_version": 1, "rate_card_id": "rate-gb-2026", "rate_card_version": 1, "rate_source": "Original synthetic Solstice Cost Studio demonstration values, created 2026-10-07. Independently chosen examples; not researched market prices, supplier quotations, currency conversions, or forecasts. Replace with reviewed project-specific rates before relying on an estimate.", "source_kind": "illustrative" }, "total_lifetime_cost": 44999901.36, "warnings": [ "ILLUSTRATIVE RATES: original synthetic demonstration values, not market prices or supplier quotations. Replace with reviewed project-specific rates before relying on this estimate.", "All CAPEX is placed at year 0; construction duration is planning metadata. Construction drawdowns, financing, tax, revenue, and replacement schedules are not modeled.", "Year 1 uses the entered yield. Tracker selection changes mounting cost only; adjust yield separately for a project-specific tracker energy case.", "The decommissioning provision is paid once in the final operating year and escalates with inflation; it is included in that year’s OPEX and lifetime OPEX.", "Module count rounds up to a whole module. Per-watt costs and generation use the requested DC capacity, without increasing capacity to the rounded module count." ] }, "rows": [ { "capex": 24202116, "discount_factor": 1, "discounted_cost": 24202116, "generation_mwh": 0, "opex": 0, "year": 0 }, { "capex": 0, "discount_factor": 0.943396226415, "discounted_cost": 581769.34, "generation_mwh": 65000, "opex": 616675.5, "year": 1 }, { "capex": 0, "discount_factor": 0.889996440014, "discounted_cost": 559815.78, "generation_mwh": 64707.5, "opex": 629009.01, "year": 2 }, { "capex": 0, "discount_factor": 0.839619283032, "discounted_cost": 538690.66, "generation_mwh": 64416.31625, "opex": 641589.19, "year": 3 }, { "capex": 0, "discount_factor": 0.792093663238, "discounted_cost": 518362.71, "generation_mwh": 64126.442827, "opex": 654420.98, "year": 4 }, { "capex": 0, "discount_factor": 0.747258172866, "discounted_cost": 498801.85, "generation_mwh": 63837.873834, "opex": 667509.4, "year": 5 }, { "capex": 0, "discount_factor": 0.70496054044, "discounted_cost": 479979.14, "generation_mwh": 63550.603402, "opex": 680859.58, "year": 6 }, { "capex": 0, "discount_factor": 0.665057113622, "discounted_cost": 461866.72, "generation_mwh": 63264.625687, "opex": 694476.77, "year": 7 }, { "capex": 0, "discount_factor": 0.627412371342, "discounted_cost": 444437.79, "generation_mwh": 62979.934871, "opex": 708366.31, "year": 8 }, { "capex": 0, "discount_factor": 0.59189846353, "discounted_cost": 427666.55, "generation_mwh": 62696.525164, "opex": 722533.64, "year": 9 }, { "capex": 0, "discount_factor": 0.558394776915, "discounted_cost": 411528.19, "generation_mwh": 62414.390801, "opex": 736984.31, "year": 10 }, { "capex": 0, "discount_factor": 0.526787525392, "discounted_cost": 395998.82, "generation_mwh": 62133.526042, "opex": 751724, "year": 11 }, { "capex": 0, "discount_factor": 0.496969363577, "discounted_cost": 381055.47, "generation_mwh": 61853.925175, "opex": 766758.48, "year": 12 }, { "capex": 0, "discount_factor": 0.468839022242, "discounted_cost": 366676.02, "generation_mwh": 61575.582512, "opex": 782093.64, "year": 13 }, { "capex": 0, "discount_factor": 0.44230096438, "discounted_cost": 352839.19, "generation_mwh": 61298.49239, "opex": 797735.52, "year": 14 }, { "capex": 0, "discount_factor": 0.417265060736, "discounted_cost": 339524.5, "generation_mwh": 61022.649175, "opex": 813690.23, "year": 15 }, { "capex": 0, "discount_factor": 0.393646283713, "discounted_cost": 326712.26, "generation_mwh": 60748.047253, "opex": 829964.03, "year": 16 }, { "capex": 0, "discount_factor": 0.371364418597, "discounted_cost": 314383.49, "generation_mwh": 60474.681041, "opex": 846563.31, "year": 17 }, { "capex": 0, "discount_factor": 0.350343791129, "discounted_cost": 302519.96, "generation_mwh": 60202.544976, "opex": 863494.58, "year": 18 }, { "capex": 0, "discount_factor": 0.330513010499, "discounted_cost": 291104.12, "generation_mwh": 59931.633524, "opex": 880764.47, "year": 19 }, { "capex": 0, "discount_factor": 0.311804726886, "discounted_cost": 280119.06, "generation_mwh": 59661.941173, "opex": 898379.76, "year": 20 }, { "capex": 0, "discount_factor": 0.294155402723, "discounted_cost": 269548.53, "generation_mwh": 59393.462438, "opex": 916347.36, "year": 21 }, { "capex": 0, "discount_factor": 0.277505096908, "discounted_cost": 259376.88, "generation_mwh": 59126.191857, "opex": 934674.3, "year": 22 }, { "capex": 0, "discount_factor": 0.261797261234, "discounted_cost": 249589.08, "generation_mwh": 58860.123993, "opex": 953367.79, "year": 23 }, { "capex": 0, "discount_factor": 0.246978548334, "discounted_cost": 240170.62, "generation_mwh": 58595.253435, "opex": 972435.14, "year": 24 }, { "capex": 0, "discount_factor": 0.232998630504, "discounted_cost": 474703.97, "generation_mwh": 58331.574795, "opex": 2037368.06, "year": 25 } ], "title": "50 MWp · fixed" }, { "id": "4", "inputs": { "annual_yield_kwh_per_kwp": 1300, "capacity_mwp": 50, "construction_months": 12, "construction_start": "2026-10-01", "dc_ac_ratio": 1.25, "degradation_pct": 0.45, "discount_pct": 6, "inflation_pct": 2, "land_hectares": 75, "module_watt": 600, "mounting": "tracker", "operation_years": 25 }, "metrics": [ { "label": "CAPEX", "unit": "GBP", "value": 26410596 }, { "label": "Annual OPEX", "unit": "GBP", "value": 622417.55 }, { "label": "LCOE", "unit": "GBP/MWh", "value": 45.447657 } ], "result": { "ac_capacity_mw": 40, "annual_generation_mwh": 65000, "annual_opex": 622417.55, "capex": 26410596, "capex_per_wp": 0.528212, "cashflows": [ { "capex": 26410596, "discount_factor": 1, "discounted_cost": 26410596, "generation_mwh": 0, "opex": 0, "year": 0 }, { "capex": 0, "discount_factor": 0.943396226415, "discounted_cost": 587186.37, "generation_mwh": 65000, "opex": 622417.55, "year": 1 }, { "capex": 0, "discount_factor": 0.889996440014, "discounted_cost": 565028.39, "generation_mwh": 64707.5, "opex": 634865.9, "year": 2 }, { "capex": 0, "discount_factor": 0.839619283032, "discounted_cost": 543706.57, "generation_mwh": 64416.31625, "opex": 647563.22, "year": 3 }, { "capex": 0, "discount_factor": 0.792093663238, "discounted_cost": 523189.34, "generation_mwh": 64126.442827, "opex": 660514.48, "year": 4 }, { "capex": 0, "discount_factor": 0.747258172866, "discounted_cost": 503446.34, "generation_mwh": 63837.873834, "opex": 673724.77, "year": 5 }, { "capex": 0, "discount_factor": 0.70496054044, "discounted_cost": 484448.37, "generation_mwh": 63550.603402, "opex": 687199.27, "year": 6 }, { "capex": 0, "discount_factor": 0.665057113622, "discounted_cost": 466167.3, "generation_mwh": 63264.625687, "opex": 700943.25, "year": 7 }, { "capex": 0, "discount_factor": 0.627412371342, "discounted_cost": 448576.08, "generation_mwh": 62979.934871, "opex": 714962.12, "year": 8 }, { "capex": 0, "discount_factor": 0.59189846353, "discounted_cost": 431648.68, "generation_mwh": 62696.525164, "opex": 729261.36, "year": 9 }, { "capex": 0, "discount_factor": 0.558394776915, "discounted_cost": 415360.05, "generation_mwh": 62414.390801, "opex": 743846.59, "year": 10 }, { "capex": 0, "discount_factor": 0.526787525392, "discounted_cost": 399686.09, "generation_mwh": 62133.526042, "opex": 758723.52, "year": 11 }, { "capex": 0, "discount_factor": 0.496969363577, "discounted_cost": 384603.59, "generation_mwh": 61853.925175, "opex": 773897.99, "year": 12 }, { "capex": 0, "discount_factor": 0.468839022242, "discounted_cost": 370090.25, "generation_mwh": 61575.582512, "opex": 789375.95, "year": 13 }, { "capex": 0, "discount_factor": 0.44230096438, "discounted_cost": 356124.58, "generation_mwh": 61298.49239, "opex": 805163.47, "year": 14 }, { "capex": 0, "discount_factor": 0.417265060736, "discounted_cost": 342685.92, "generation_mwh": 61022.649175, "opex": 821266.74, "year": 15 }, { "capex": 0, "discount_factor": 0.393646283713, "discounted_cost": 329754.37, "generation_mwh": 60748.047253, "opex": 837692.07, "year": 16 }, { "capex": 0, "discount_factor": 0.371364418597, "discounted_cost": 317310.81, "generation_mwh": 60474.681041, "opex": 854445.91, "year": 17 }, { "capex": 0, "discount_factor": 0.350343791129, "discounted_cost": 305336.82, "generation_mwh": 60202.544976, "opex": 871534.83, "year": 18 }, { "capex": 0, "discount_factor": 0.330513010499, "discounted_cost": 293814.67, "generation_mwh": 59931.633524, "opex": 888965.53, "year": 19 }, { "capex": 0, "discount_factor": 0.311804726886, "discounted_cost": 282727.33, "generation_mwh": 59661.941173, "opex": 906744.84, "year": 20 }, { "capex": 0, "discount_factor": 0.294155402723, "discounted_cost": 272058.37, "generation_mwh": 59393.462438, "opex": 924879.74, "year": 21 }, { "capex": 0, "discount_factor": 0.277505096908, "discounted_cost": 261792.02, "generation_mwh": 59126.191857, "opex": 943377.33, "year": 22 }, { "capex": 0, "discount_factor": 0.261797261234, "discounted_cost": 251913.07, "generation_mwh": 58860.123993, "opex": 962244.88, "year": 23 }, { "capex": 0, "discount_factor": 0.246978548334, "discounted_cost": 242406.92, "generation_mwh": 58595.253435, "opex": 981489.78, "year": 24 }, { "capex": 0, "discount_factor": 0.232998630504, "discounted_cost": 476855.88, "generation_mwh": 58331.574795, "opex": 2046603.78, "year": 25 } ], "currency": "GBP", "discounted_lifecycle_cost": 36266514.16, "lcoe_per_mwh": 45.447657, "lifetime_opex": 20981704.88, "lines": [ { "base_value": 9500000, "category": "capex", "expression": "capacity_wp * modules_per_w", "id": "modules", "label": "PV modules", "overridden": false, "unit": "currency", "value": 9500000 }, { "base_value": 2040000, "category": "capex", "expression": "ac_capacity_w * inverters_per_wac", "id": "inverters", "label": "Inverters · AC basis", "overridden": false, "unit": "currency", "value": 2040000 }, { "base_value": 5650000, "category": "capex", "expression": "capacity_wp * (is_fixed * mounting_fixed_per_wp + is_tracker * mounting_tracker_per_wp)", "id": "mounting_structure", "label": "Mounting structure", "overridden": false, "unit": "currency", "value": 5650000 }, { "base_value": 3350000, "category": "capex", "expression": "capacity_wp * electrical_per_wp", "id": "electrical", "label": "Electrical balance of plant", "overridden": false, "unit": "currency", "value": 3350000 }, { "base_value": 1800000, "category": "capex", "expression": "capacity_wp * civil_per_wp", "id": "civil", "label": "Civil works", "overridden": false, "unit": "currency", "value": 1800000 }, { "base_value": 560000, "category": "capex", "expression": "grid_connection", "id": "grid", "label": "Grid connection allowance", "overridden": false, "unit": "currency", "value": 560000 }, { "base_value": 1050000, "category": "capex", "expression": "capacity_wp * development_per_wp", "id": "development", "label": "Development", "overridden": false, "unit": "currency", "value": 1050000 }, { "base_value": 732800, "category": "capex", "expression": "(modules + inverters + mounting_structure + electrical + civil + grid) * engineering_pct / 100", "id": "engineering", "label": "Engineering · construction base", "overridden": false, "unit": "currency", "value": 732800 }, { "base_value": 1727796, "category": "capex", "expression": "(modules + inverters + mounting_structure + electrical + civil + grid + development + engineering) * contingency_pct / 100", "id": "contingency", "label": "Contingency · pre-contingency CAPEX", "overridden": false, "unit": "currency", "value": 1727796 }, { "base_value": 78750, "category": "opex", "expression": "land_hectares * land_per_ha_year", "id": "land_lease", "label": "Annual land lease", "overridden": false, "unit": "currency/year", "value": 78750 }, { "base_value": 475000, "category": "opex", "expression": "capacity_kwp * om_per_kwp_year", "id": "operations", "label": "Annual operations and maintenance", "overridden": false, "unit": "currency/year", "value": 475000 }, { "base_value": 68667.55, "category": "opex", "expression": "(modules + inverters + mounting_structure + electrical + civil + grid + development + engineering + contingency) * insurance_pct / 100", "id": "insurance", "label": "Annual insurance · total CAPEX", "overridden": false, "unit": "currency/year", "value": 68667.55 }, { "base_value": 650000, "category": "reserve", "expression": "capacity_kwp * decommission_per_kwp", "id": "decommission", "label": "Final-year decommissioning provision", "overridden": false, "unit": "currency", "value": 650000 } ], "module_count": 83334, "provenance": { "method_version": "solstice-pv-1.0.0", "model_id": "model-solar-v1", "model_version": 1, "rate_card_id": "rate-gb-2026", "rate_card_version": 1, "rate_source": "Original synthetic Solstice Cost Studio demonstration values, created 2026-10-07. Independently chosen examples; not researched market prices, supplier quotations, currency conversions, or forecasts. Replace with reviewed project-specific rates before relying on an estimate.", "source_kind": "illustrative" }, "total_lifetime_cost": 47392300.88, "warnings": [ "ILLUSTRATIVE RATES: original synthetic demonstration values, not market prices or supplier quotations. Replace with reviewed project-specific rates before relying on this estimate.", "All CAPEX is placed at year 0; construction duration is planning metadata. Construction drawdowns, financing, tax, revenue, and replacement schedules are not modeled.", "Year 1 uses the entered yield. Tracker selection changes mounting cost only; adjust yield separately for a project-specific tracker energy case.", "The decommissioning provision is paid once in the final operating year and escalates with inflation; it is included in that year’s OPEX and lifetime OPEX.", "Module count rounds up to a whole module. Per-watt costs and generation use the requested DC capacity, without increasing capacity to the rounded module count." ] }, "rows": [ { "capex": 26410596, "discount_factor": 1, "discounted_cost": 26410596, "generation_mwh": 0, "opex": 0, "year": 0 }, { "capex": 0, "discount_factor": 0.943396226415, "discounted_cost": 587186.37, "generation_mwh": 65000, "opex": 622417.55, "year": 1 }, { "capex": 0, "discount_factor": 0.889996440014, "discounted_cost": 565028.39, "generation_mwh": 64707.5, "opex": 634865.9, "year": 2 }, { "capex": 0, "discount_factor": 0.839619283032, "discounted_cost": 543706.57, "generation_mwh": 64416.31625, "opex": 647563.22, "year": 3 }, { "capex": 0, "discount_factor": 0.792093663238, "discounted_cost": 523189.34, "generation_mwh": 64126.442827, "opex": 660514.48, "year": 4 }, { "capex": 0, "discount_factor": 0.747258172866, "discounted_cost": 503446.34, "generation_mwh": 63837.873834, "opex": 673724.77, "year": 5 }, { "capex": 0, "discount_factor": 0.70496054044, "discounted_cost": 484448.37, "generation_mwh": 63550.603402, "opex": 687199.27, "year": 6 }, { "capex": 0, "discount_factor": 0.665057113622, "discounted_cost": 466167.3, "generation_mwh": 63264.625687, "opex": 700943.25, "year": 7 }, { "capex": 0, "discount_factor": 0.627412371342, "discounted_cost": 448576.08, "generation_mwh": 62979.934871, "opex": 714962.12, "year": 8 }, { "capex": 0, "discount_factor": 0.59189846353, "discounted_cost": 431648.68, "generation_mwh": 62696.525164, "opex": 729261.36, "year": 9 }, { "capex": 0, "discount_factor": 0.558394776915, "discounted_cost": 415360.05, "generation_mwh": 62414.390801, "opex": 743846.59, "year": 10 }, { "capex": 0, "discount_factor": 0.526787525392, "discounted_cost": 399686.09, "generation_mwh": 62133.526042, "opex": 758723.52, "year": 11 }, { "capex": 0, "discount_factor": 0.496969363577, "discounted_cost": 384603.59, "generation_mwh": 61853.925175, "opex": 773897.99, "year": 12 }, { "capex": 0, "discount_factor": 0.468839022242, "discounted_cost": 370090.25, "generation_mwh": 61575.582512, "opex": 789375.95, "year": 13 }, { "capex": 0, "discount_factor": 0.44230096438, "discounted_cost": 356124.58, "generation_mwh": 61298.49239, "opex": 805163.47, "year": 14 }, { "capex": 0, "discount_factor": 0.417265060736, "discounted_cost": 342685.92, "generation_mwh": 61022.649175, "opex": 821266.74, "year": 15 }, { "capex": 0, "discount_factor": 0.393646283713, "discounted_cost": 329754.37, "generation_mwh": 60748.047253, "opex": 837692.07, "year": 16 }, { "capex": 0, "discount_factor": 0.371364418597, "discounted_cost": 317310.81, "generation_mwh": 60474.681041, "opex": 854445.91, "year": 17 }, { "capex": 0, "discount_factor": 0.350343791129, "discounted_cost": 305336.82, "generation_mwh": 60202.544976, "opex": 871534.83, "year": 18 }, { "capex": 0, "discount_factor": 0.330513010499, "discounted_cost": 293814.67, "generation_mwh": 59931.633524, "opex": 888965.53, "year": 19 }, { "capex": 0, "discount_factor": 0.311804726886, "discounted_cost": 282727.33, "generation_mwh": 59661.941173, "opex": 906744.84, "year": 20 }, { "capex": 0, "discount_factor": 0.294155402723, "discounted_cost": 272058.37, "generation_mwh": 59393.462438, "opex": 924879.74, "year": 21 }, { "capex": 0, "discount_factor": 0.277505096908, "discounted_cost": 261792.02, "generation_mwh": 59126.191857, "opex": 943377.33, "year": 22 }, { "capex": 0, "discount_factor": 0.261797261234, "discounted_cost": 251913.07, "generation_mwh": 58860.123993, "opex": 962244.88, "year": 23 }, { "capex": 0, "discount_factor": 0.246978548334, "discounted_cost": 242406.92, "generation_mwh": 58595.253435, "opex": 981489.78, "year": 24 }, { "capex": 0, "discount_factor": 0.232998630504, "discounted_cost": 476855.88, "generation_mwh": 58331.574795, "opex": 2046603.78, "year": 25 } ], "title": "50 MWp · tracker" }, { "id": "5", "inputs": { "annual_yield_kwh_per_kwp": 1300, "capacity_mwp": 100, "construction_months": 12, "construction_start": "2026-10-01", "dc_ac_ratio": 1.25, "degradation_pct": 0.45, "discount_pct": 6, "inflation_pct": 2, "land_hectares": 150, "module_watt": 600, "mounting": "fixed", "operation_years": 25 }, "metrics": [ { "label": "CAPEX", "unit": "GBP", "value": 47785857.6 }, { "label": "Annual OPEX", "unit": "GBP", "value": 1231743.23 }, { "label": "LCOE", "unit": "GBP/MWh", "value": 42.165939 } ], "result": { "ac_capacity_mw": 80, "annual_generation_mwh": 130000, "annual_opex": 1231743.23, "capex": 47785857.6, "capex_per_wp": 0.477859, "cashflows": [ { "capex": 47785857.6, "discount_factor": 1, "discounted_cost": 47785857.6, "generation_mwh": 0, "opex": 0, "year": 0 }, { "capex": 0, "discount_factor": 0.943396226415, "discounted_cost": 1162021.91, "generation_mwh": 130000, "opex": 1231743.23, "year": 1 }, { "capex": 0, "discount_factor": 0.889996440014, "discounted_cost": 1118172.03, "generation_mwh": 129415, "opex": 1256378.09, "year": 2 }, { "capex": 0, "discount_factor": 0.839619283032, "discounted_cost": 1075976.86, "generation_mwh": 128832.6325, "opex": 1281505.66, "year": 3 }, { "capex": 0, "discount_factor": 0.792093663238, "discounted_cost": 1035373.96, "generation_mwh": 128252.885654, "opex": 1307135.77, "year": 4 }, { "capex": 0, "discount_factor": 0.747258172866, "discounted_cost": 996303.24, "generation_mwh": 127675.747668, "opex": 1333278.48, "year": 5 }, { "capex": 0, "discount_factor": 0.70496054044, "discounted_cost": 958706.9, "generation_mwh": 127101.206804, "opex": 1359944.05, "year": 6 }, { "capex": 0, "discount_factor": 0.665057113622, "discounted_cost": 922529.28, "generation_mwh": 126529.251373, "opex": 1387142.94, "year": 7 }, { "capex": 0, "discount_factor": 0.627412371342, "discounted_cost": 887716.85, "generation_mwh": 125959.869742, "opex": 1414885.79, "year": 8 }, { "capex": 0, "discount_factor": 0.59189846353, "discounted_cost": 854218.1, "generation_mwh": 125393.050328, "opex": 1443183.51, "year": 9 }, { "capex": 0, "discount_factor": 0.558394776915, "discounted_cost": 821983.46, "generation_mwh": 124828.781602, "opex": 1472047.18, "year": 10 }, { "capex": 0, "discount_factor": 0.526787525392, "discounted_cost": 790965.21, "generation_mwh": 124267.052084, "opex": 1501488.12, "year": 11 }, { "capex": 0, "discount_factor": 0.496969363577, "discounted_cost": 761117.47, "generation_mwh": 123707.85035, "opex": 1531517.89, "year": 12 }, { "capex": 0, "discount_factor": 0.468839022242, "discounted_cost": 732396.06, "generation_mwh": 123151.165024, "opex": 1562148.24, "year": 13 }, { "capex": 0, "discount_factor": 0.44230096438, "discounted_cost": 704758.47, "generation_mwh": 122596.984781, "opex": 1593391.21, "year": 14 }, { "capex": 0, "discount_factor": 0.417265060736, "discounted_cost": 678163.81, "generation_mwh": 122045.298349, "opex": 1625259.03, "year": 15 }, { "capex": 0, "discount_factor": 0.393646283713, "discounted_cost": 652572.72, "generation_mwh": 121496.094507, "opex": 1657764.21, "year": 16 }, { "capex": 0, "discount_factor": 0.371364418597, "discounted_cost": 627947.34, "generation_mwh": 120949.362082, "opex": 1690919.5, "year": 17 }, { "capex": 0, "discount_factor": 0.350343791129, "discounted_cost": 604251.21, "generation_mwh": 120405.089952, "opex": 1724737.89, "year": 18 }, { "capex": 0, "discount_factor": 0.330513010499, "discounted_cost": 581449.28, "generation_mwh": 119863.267047, "opex": 1759232.65, "year": 19 }, { "capex": 0, "discount_factor": 0.311804726886, "discounted_cost": 559507.8, "generation_mwh": 119323.882346, "opex": 1794417.3, "year": 20 }, { "capex": 0, "discount_factor": 0.294155402723, "discounted_cost": 538394.29, "generation_mwh": 118786.924875, "opex": 1830305.64, "year": 21 }, { "capex": 0, "discount_factor": 0.277505096908, "discounted_cost": 518077.53, "generation_mwh": 118252.383713, "opex": 1866911.76, "year": 22 }, { "capex": 0, "discount_factor": 0.261797261234, "discounted_cost": 498527.43, "generation_mwh": 117720.247986, "opex": 1904249.99, "year": 23 }, { "capex": 0, "discount_factor": 0.246978548334, "discounted_cost": 479715.08, "generation_mwh": 117190.506871, "opex": 1942334.99, "year": 24 }, { "capex": 0, "discount_factor": 0.232998630504, "discounted_cost": 948805.4, "generation_mwh": 116663.14959, "opex": 4072150.12, "year": 25 } ], "currency": "GBP", "discounted_lifecycle_cost": 67295509.28, "lcoe_per_mwh": 42.165939, "lifetime_opex": 41544073.26, "lines": [ { "base_value": 19000000, "category": "capex", "expression": "capacity_wp * modules_per_w", "id": "modules", "label": "PV modules", "overridden": false, "unit": "currency", "value": 19000000 }, { "base_value": 4080000, "category": "capex", "expression": "ac_capacity_w * inverters_per_wac", "id": "inverters", "label": "Inverters · AC basis", "overridden": false, "unit": "currency", "value": 4080000 }, { "base_value": 7300000, "category": "capex", "expression": "capacity_wp * (is_fixed * mounting_fixed_per_wp + is_tracker * mounting_tracker_per_wp)", "id": "mounting_structure", "label": "Mounting structure", "overridden": false, "unit": "currency", "value": 7300000 }, { "base_value": 6700000, "category": "capex", "expression": "capacity_wp * electrical_per_wp", "id": "electrical", "label": "Electrical balance of plant", "overridden": false, "unit": "currency", "value": 6700000 }, { "base_value": 3600000, "category": "capex", "expression": "capacity_wp * civil_per_wp", "id": "civil", "label": "Civil works", "overridden": false, "unit": "currency", "value": 3600000 }, { "base_value": 560000, "category": "capex", "expression": "grid_connection", "id": "grid", "label": "Grid connection allowance", "overridden": false, "unit": "currency", "value": 560000 }, { "base_value": 2100000, "category": "capex", "expression": "capacity_wp * development_per_wp", "id": "development", "label": "Development", "overridden": false, "unit": "currency", "value": 2100000 }, { "base_value": 1319680, "category": "capex", "expression": "(modules + inverters + mounting_structure + electrical + civil + grid) * engineering_pct / 100", "id": "engineering", "label": "Engineering · construction base", "overridden": false, "unit": "currency", "value": 1319680 }, { "base_value": 3126177.6, "category": "capex", "expression": "(modules + inverters + mounting_structure + electrical + civil + grid + development + engineering) * contingency_pct / 100", "id": "contingency", "label": "Contingency · pre-contingency CAPEX", "overridden": false, "unit": "currency", "value": 3126177.6 }, { "base_value": 157500, "category": "opex", "expression": "land_hectares * land_per_ha_year", "id": "land_lease", "label": "Annual land lease", "overridden": false, "unit": "currency/year", "value": 157500 }, { "base_value": 950000, "category": "opex", "expression": "capacity_kwp * om_per_kwp_year", "id": "operations", "label": "Annual operations and maintenance", "overridden": false, "unit": "currency/year", "value": 950000 }, { "base_value": 124243.23, "category": "opex", "expression": "(modules + inverters + mounting_structure + electrical + civil + grid + development + engineering + contingency) * insurance_pct / 100", "id": "insurance", "label": "Annual insurance · total CAPEX", "overridden": false, "unit": "currency/year", "value": 124243.23 }, { "base_value": 1300000, "category": "reserve", "expression": "capacity_kwp * decommission_per_kwp", "id": "decommission", "label": "Final-year decommissioning provision", "overridden": false, "unit": "currency", "value": 1300000 } ], "module_count": 166667, "provenance": { "method_version": "solstice-pv-1.0.0", "model_id": "model-solar-v1", "model_version": 1, "rate_card_id": "rate-gb-2026", "rate_card_version": 1, "rate_source": "Original synthetic Solstice Cost Studio demonstration values, created 2026-10-07. Independently chosen examples; not researched market prices, supplier quotations, currency conversions, or forecasts. Replace with reviewed project-specific rates before relying on an estimate.", "source_kind": "illustrative" }, "total_lifetime_cost": 89329930.86, "warnings": [ "ILLUSTRATIVE RATES: original synthetic demonstration values, not market prices or supplier quotations. Replace with reviewed project-specific rates before relying on this estimate.", "All CAPEX is placed at year 0; construction duration is planning metadata. Construction drawdowns, financing, tax, revenue, and replacement schedules are not modeled.", "Year 1 uses the entered yield. Tracker selection changes mounting cost only; adjust yield separately for a project-specific tracker energy case.", "The decommissioning provision is paid once in the final operating year and escalates with inflation; it is included in that year’s OPEX and lifetime OPEX.", "Module count rounds up to a whole module. Per-watt costs and generation use the requested DC capacity, without increasing capacity to the rounded module count." ] }, "rows": [ { "capex": 47785857.6, "discount_factor": 1, "discounted_cost": 47785857.6, "generation_mwh": 0, "opex": 0, "year": 0 }, { "capex": 0, "discount_factor": 0.943396226415, "discounted_cost": 1162021.91, "generation_mwh": 130000, "opex": 1231743.23, "year": 1 }, { "capex": 0, "discount_factor": 0.889996440014, "discounted_cost": 1118172.03, "generation_mwh": 129415, "opex": 1256378.09, "year": 2 }, { "capex": 0, "discount_factor": 0.839619283032, "discounted_cost": 1075976.86, "generation_mwh": 128832.6325, "opex": 1281505.66, "year": 3 }, { "capex": 0, "discount_factor": 0.792093663238, "discounted_cost": 1035373.96, "generation_mwh": 128252.885654, "opex": 1307135.77, "year": 4 }, { "capex": 0, "discount_factor": 0.747258172866, "discounted_cost": 996303.24, "generation_mwh": 127675.747668, "opex": 1333278.48, "year": 5 }, { "capex": 0, "discount_factor": 0.70496054044, "discounted_cost": 958706.9, "generation_mwh": 127101.206804, "opex": 1359944.05, "year": 6 }, { "capex": 0, "discount_factor": 0.665057113622, "discounted_cost": 922529.28, "generation_mwh": 126529.251373, "opex": 1387142.94, "year": 7 }, { "capex": 0, "discount_factor": 0.627412371342, "discounted_cost": 887716.85, "generation_mwh": 125959.869742, "opex": 1414885.79, "year": 8 }, { "capex": 0, "discount_factor": 0.59189846353, "discounted_cost": 854218.1, "generation_mwh": 125393.050328, "opex": 1443183.51, "year": 9 }, { "capex": 0, "discount_factor": 0.558394776915, "discounted_cost": 821983.46, "generation_mwh": 124828.781602, "opex": 1472047.18, "year": 10 }, { "capex": 0, "discount_factor": 0.526787525392, "discounted_cost": 790965.21, "generation_mwh": 124267.052084, "opex": 1501488.12, "year": 11 }, { "capex": 0, "discount_factor": 0.496969363577, "discounted_cost": 761117.47, "generation_mwh": 123707.85035, "opex": 1531517.89, "year": 12 }, { "capex": 0, "discount_factor": 0.468839022242, "discounted_cost": 732396.06, "generation_mwh": 123151.165024, "opex": 1562148.24, "year": 13 }, { "capex": 0, "discount_factor": 0.44230096438, "discounted_cost": 704758.47, "generation_mwh": 122596.984781, "opex": 1593391.21, "year": 14 }, { "capex": 0, "discount_factor": 0.417265060736, "discounted_cost": 678163.81, "generation_mwh": 122045.298349, "opex": 1625259.03, "year": 15 }, { "capex": 0, "discount_factor": 0.393646283713, "discounted_cost": 652572.72, "generation_mwh": 121496.094507, "opex": 1657764.21, "year": 16 }, { "capex": 0, "discount_factor": 0.371364418597, "discounted_cost": 627947.34, "generation_mwh": 120949.362082, "opex": 1690919.5, "year": 17 }, { "capex": 0, "discount_factor": 0.350343791129, "discounted_cost": 604251.21, "generation_mwh": 120405.089952, "opex": 1724737.89, "year": 18 }, { "capex": 0, "discount_factor": 0.330513010499, "discounted_cost": 581449.28, "generation_mwh": 119863.267047, "opex": 1759232.65, "year": 19 }, { "capex": 0, "discount_factor": 0.311804726886, "discounted_cost": 559507.8, "generation_mwh": 119323.882346, "opex": 1794417.3, "year": 20 }, { "capex": 0, "discount_factor": 0.294155402723, "discounted_cost": 538394.29, "generation_mwh": 118786.924875, "opex": 1830305.64, "year": 21 }, { "capex": 0, "discount_factor": 0.277505096908, "discounted_cost": 518077.53, "generation_mwh": 118252.383713, "opex": 1866911.76, "year": 22 }, { "capex": 0, "discount_factor": 0.261797261234, "discounted_cost": 498527.43, "generation_mwh": 117720.247986, "opex": 1904249.99, "year": 23 }, { "capex": 0, "discount_factor": 0.246978548334, "discounted_cost": 479715.08, "generation_mwh": 117190.506871, "opex": 1942334.99, "year": 24 }, { "capex": 0, "discount_factor": 0.232998630504, "discounted_cost": 948805.4, "generation_mwh": 116663.14959, "opex": 4072150.12, "year": 25 } ], "title": "100 MWp · fixed" }, { "id": "6", "inputs": { "annual_yield_kwh_per_kwp": 1300, "capacity_mwp": 100, "construction_months": 12, "construction_start": "2026-10-01", "dc_ac_ratio": 1.25, "degradation_pct": 0.45, "discount_pct": 6, "inflation_pct": 2, "land_hectares": 150, "module_watt": 600, "mounting": "tracker", "operation_years": 25 }, "metrics": [ { "label": "CAPEX", "unit": "GBP", "value": 52202817.6 }, { "label": "Annual OPEX", "unit": "GBP", "value": 1243227.33 }, { "label": "LCOE", "unit": "GBP/MWh", "value": 45.044639 } ], "result": { "ac_capacity_mw": 80, "annual_generation_mwh": 130000, "annual_opex": 1243227.33, "capex": 52202817.6, "capex_per_wp": 0.522028, "cashflows": [ { "capex": 52202817.6, "discount_factor": 1, "discounted_cost": 52202817.6, "generation_mwh": 0, "opex": 0, "year": 0 }, { "capex": 0, "discount_factor": 0.943396226415, "discounted_cost": 1172855.97, "generation_mwh": 130000, "opex": 1243227.33, "year": 1 }, { "capex": 0, "discount_factor": 0.889996440014, "discounted_cost": 1128597.25, "generation_mwh": 129415, "opex": 1268091.87, "year": 2 }, { "capex": 0, "discount_factor": 0.839619283032, "discounted_cost": 1086008.68, "generation_mwh": 128832.6325, "opex": 1293453.71, "year": 3 }, { "capex": 0, "discount_factor": 0.792093663238, "discounted_cost": 1045027.22, "generation_mwh": 128252.885654, "opex": 1319322.78, "year": 4 }, { "capex": 0, "discount_factor": 0.747258172866, "discounted_cost": 1005592.23, "generation_mwh": 127675.747668, "opex": 1345709.24, "year": 5 }, { "capex": 0, "discount_factor": 0.70496054044, "discounted_cost": 967645.35, "generation_mwh": 127101.206804, "opex": 1372623.42, "year": 6 }, { "capex": 0, "discount_factor": 0.665057113622, "discounted_cost": 931130.43, "generation_mwh": 126529.251373, "opex": 1400075.89, "year": 7 }, { "capex": 0, "discount_factor": 0.627412371342, "discounted_cost": 895993.43, "generation_mwh": 125959.869742, "opex": 1428077.41, "year": 8 }, { "capex": 0, "discount_factor": 0.59189846353, "discounted_cost": 862182.36, "generation_mwh": 125393.050328, "opex": 1456638.96, "year": 9 }, { "capex": 0, "discount_factor": 0.558394776915, "discounted_cost": 829647.18, "generation_mwh": 124828.781602, "opex": 1485771.74, "year": 10 }, { "capex": 0, "discount_factor": 0.526787525392, "discounted_cost": 798339.74, "generation_mwh": 124267.052084, "opex": 1515487.17, "year": 11 }, { "capex": 0, "discount_factor": 0.496969363577, "discounted_cost": 768213.71, "generation_mwh": 123707.85035, "opex": 1545796.92, "year": 12 }, { "capex": 0, "discount_factor": 0.468839022242, "discounted_cost": 739224.51, "generation_mwh": 123151.165024, "opex": 1576712.85, "year": 13 }, { "capex": 0, "discount_factor": 0.44230096438, "discounted_cost": 711329.25, "generation_mwh": 122596.984781, "opex": 1608247.11, "year": 14 }, { "capex": 0, "discount_factor": 0.417265060736, "discounted_cost": 684486.64, "generation_mwh": 122045.298349, "opex": 1640412.05, "year": 15 }, { "capex": 0, "discount_factor": 0.393646283713, "discounted_cost": 658656.95, "generation_mwh": 121496.094507, "opex": 1673220.3, "year": 16 }, { "capex": 0, "discount_factor": 0.371364418597, "discounted_cost": 633801.97, "generation_mwh": 120949.362082, "opex": 1706684.7, "year": 17 }, { "capex": 0, "discount_factor": 0.350343791129, "discounted_cost": 609884.92, "generation_mwh": 120405.089952, "opex": 1740818.4, "year": 18 }, { "capex": 0, "discount_factor": 0.330513010499, "discounted_cost": 586870.39, "generation_mwh": 119863.267047, "opex": 1775634.76, "year": 19 }, { "capex": 0, "discount_factor": 0.311804726886, "discounted_cost": 564724.34, "generation_mwh": 119323.882346, "opex": 1811147.46, "year": 20 }, { "capex": 0, "discount_factor": 0.294155402723, "discounted_cost": 543413.99, "generation_mwh": 118786.924875, "opex": 1847370.41, "year": 21 }, { "capex": 0, "discount_factor": 0.277505096908, "discounted_cost": 522907.8, "generation_mwh": 118252.383713, "opex": 1884317.82, "year": 22 }, { "capex": 0, "discount_factor": 0.261797261234, "discounted_cost": 503175.43, "generation_mwh": 117720.247986, "opex": 1922004.17, "year": 23 }, { "capex": 0, "discount_factor": 0.246978548334, "discounted_cost": 484187.68, "generation_mwh": 117190.506871, "opex": 1960444.26, "year": 24 }, { "capex": 0, "discount_factor": 0.232998630504, "discounted_cost": 953109.22, "generation_mwh": 116663.14959, "opex": 4090621.56, "year": 25 } ], "currency": "GBP", "discounted_lifecycle_cost": 71889824.22, "lcoe_per_mwh": 45.044639, "lifetime_opex": 41911912.29, "lines": [ { "base_value": 19000000, "category": "capex", "expression": "capacity_wp * modules_per_w", "id": "modules", "label": "PV modules", "overridden": false, "unit": "currency", "value": 19000000 }, { "base_value": 4080000, "category": "capex", "expression": "ac_capacity_w * inverters_per_wac", "id": "inverters", "label": "Inverters · AC basis", "overridden": false, "unit": "currency", "value": 4080000 }, { "base_value": 11300000, "category": "capex", "expression": "capacity_wp * (is_fixed * mounting_fixed_per_wp + is_tracker * mounting_tracker_per_wp)", "id": "mounting_structure", "label": "Mounting structure", "overridden": false, "unit": "currency", "value": 11300000 }, { "base_value": 6700000, "category": "capex", "expression": "capacity_wp * electrical_per_wp", "id": "electrical", "label": "Electrical balance of plant", "overridden": false, "unit": "currency", "value": 6700000 }, { "base_value": 3600000, "category": "capex", "expression": "capacity_wp * civil_per_wp", "id": "civil", "label": "Civil works", "overridden": false, "unit": "currency", "value": 3600000 }, { "base_value": 560000, "category": "capex", "expression": "grid_connection", "id": "grid", "label": "Grid connection allowance", "overridden": false, "unit": "currency", "value": 560000 }, { "base_value": 2100000, "category": "capex", "expression": "capacity_wp * development_per_wp", "id": "development", "label": "Development", "overridden": false, "unit": "currency", "value": 2100000 }, { "base_value": 1447680, "category": "capex", "expression": "(modules + inverters + mounting_structure + electrical + civil + grid) * engineering_pct / 100", "id": "engineering", "label": "Engineering · construction base", "overridden": false, "unit": "currency", "value": 1447680 }, { "base_value": 3415137.6, "category": "capex", "expression": "(modules + inverters + mounting_structure + electrical + civil + grid + development + engineering) * contingency_pct / 100", "id": "contingency", "label": "Contingency · pre-contingency CAPEX", "overridden": false, "unit": "currency", "value": 3415137.6 }, { "base_value": 157500, "category": "opex", "expression": "land_hectares * land_per_ha_year", "id": "land_lease", "label": "Annual land lease", "overridden": false, "unit": "currency/year", "value": 157500 }, { "base_value": 950000, "category": "opex", "expression": "capacity_kwp * om_per_kwp_year", "id": "operations", "label": "Annual operations and maintenance", "overridden": false, "unit": "currency/year", "value": 950000 }, { "base_value": 135727.33, "category": "opex", "expression": "(modules + inverters + mounting_structure + electrical + civil + grid + development + engineering + contingency) * insurance_pct / 100", "id": "insurance", "label": "Annual insurance · total CAPEX", "overridden": false, "unit": "currency/year", "value": 135727.33 }, { "base_value": 1300000, "category": "reserve", "expression": "capacity_kwp * decommission_per_kwp", "id": "decommission", "label": "Final-year decommissioning provision", "overridden": false, "unit": "currency", "value": 1300000 } ], "module_count": 166667, "provenance": { "method_version": "solstice-pv-1.0.0", "model_id": "model-solar-v1", "model_version": 1, "rate_card_id": "rate-gb-2026", "rate_card_version": 1, "rate_source": "Original synthetic Solstice Cost Studio demonstration values, created 2026-10-07. Independently chosen examples; not researched market prices, supplier quotations, currency conversions, or forecasts. Replace with reviewed project-specific rates before relying on an estimate.", "source_kind": "illustrative" }, "total_lifetime_cost": 94114729.89, "warnings": [ "ILLUSTRATIVE RATES: original synthetic demonstration values, not market prices or supplier quotations. Replace with reviewed project-specific rates before relying on this estimate.", "All CAPEX is placed at year 0; construction duration is planning metadata. Construction drawdowns, financing, tax, revenue, and replacement schedules are not modeled.", "Year 1 uses the entered yield. Tracker selection changes mounting cost only; adjust yield separately for a project-specific tracker energy case.", "The decommissioning provision is paid once in the final operating year and escalates with inflation; it is included in that year’s OPEX and lifetime OPEX.", "Module count rounds up to a whole module. Per-watt costs and generation use the requested DC capacity, without increasing capacity to the rounded module count." ] }, "rows": [ { "capex": 52202817.6, "discount_factor": 1, "discounted_cost": 52202817.6, "generation_mwh": 0, "opex": 0, "year": 0 }, { "capex": 0, "discount_factor": 0.943396226415, "discounted_cost": 1172855.97, "generation_mwh": 130000, "opex": 1243227.33, "year": 1 }, { "capex": 0, "discount_factor": 0.889996440014, "discounted_cost": 1128597.25, "generation_mwh": 129415, "opex": 1268091.87, "year": 2 }, { "capex": 0, "discount_factor": 0.839619283032, "discounted_cost": 1086008.68, "generation_mwh": 128832.6325, "opex": 1293453.71, "year": 3 }, { "capex": 0, "discount_factor": 0.792093663238, "discounted_cost": 1045027.22, "generation_mwh": 128252.885654, "opex": 1319322.78, "year": 4 }, { "capex": 0, "discount_factor": 0.747258172866, "discounted_cost": 1005592.23, "generation_mwh": 127675.747668, "opex": 1345709.24, "year": 5 }, { "capex": 0, "discount_factor": 0.70496054044, "discounted_cost": 967645.35, "generation_mwh": 127101.206804, "opex": 1372623.42, "year": 6 }, { "capex": 0, "discount_factor": 0.665057113622, "discounted_cost": 931130.43, "generation_mwh": 126529.251373, "opex": 1400075.89, "year": 7 }, { "capex": 0, "discount_factor": 0.627412371342, "discounted_cost": 895993.43, "generation_mwh": 125959.869742, "opex": 1428077.41, "year": 8 }, { "capex": 0, "discount_factor": 0.59189846353, "discounted_cost": 862182.36, "generation_mwh": 125393.050328, "opex": 1456638.96, "year": 9 }, { "capex": 0, "discount_factor": 0.558394776915, "discounted_cost": 829647.18, "generation_mwh": 124828.781602, "opex": 1485771.74, "year": 10 }, { "capex": 0, "discount_factor": 0.526787525392, "discounted_cost": 798339.74, "generation_mwh": 124267.052084, "opex": 1515487.17, "year": 11 }, { "capex": 0, "discount_factor": 0.496969363577, "discounted_cost": 768213.71, "generation_mwh": 123707.85035, "opex": 1545796.92, "year": 12 }, { "capex": 0, "discount_factor": 0.468839022242, "discounted_cost": 739224.51, "generation_mwh": 123151.165024, "opex": 1576712.85, "year": 13 }, { "capex": 0, "discount_factor": 0.44230096438, "discounted_cost": 711329.25, "generation_mwh": 122596.984781, "opex": 1608247.11, "year": 14 }, { "capex": 0, "discount_factor": 0.417265060736, "discounted_cost": 684486.64, "generation_mwh": 122045.298349, "opex": 1640412.05, "year": 15 }, { "capex": 0, "discount_factor": 0.393646283713, "discounted_cost": 658656.95, "generation_mwh": 121496.094507, "opex": 1673220.3, "year": 16 }, { "capex": 0, "discount_factor": 0.371364418597, "discounted_cost": 633801.97, "generation_mwh": 120949.362082, "opex": 1706684.7, "year": 17 }, { "capex": 0, "discount_factor": 0.350343791129, "discounted_cost": 609884.92, "generation_mwh": 120405.089952, "opex": 1740818.4, "year": 18 }, { "capex": 0, "discount_factor": 0.330513010499, "discounted_cost": 586870.39, "generation_mwh": 119863.267047, "opex": 1775634.76, "year": 19 }, { "capex": 0, "discount_factor": 0.311804726886, "discounted_cost": 564724.34, "generation_mwh": 119323.882346, "opex": 1811147.46, "year": 20 }, { "capex": 0, "discount_factor": 0.294155402723, "discounted_cost": 543413.99, "generation_mwh": 118786.924875, "opex": 1847370.41, "year": 21 }, { "capex": 0, "discount_factor": 0.277505096908, "discounted_cost": 522907.8, "generation_mwh": 118252.383713, "opex": 1884317.82, "year": 22 }, { "capex": 0, "discount_factor": 0.261797261234, "discounted_cost": 503175.43, "generation_mwh": 117720.247986, "opex": 1922004.17, "year": 23 }, { "capex": 0, "discount_factor": 0.246978548334, "discounted_cost": 484187.68, "generation_mwh": 117190.506871, "opex": 1960444.26, "year": 24 }, { "capex": 0, "discount_factor": 0.232998630504, "discounted_cost": 953109.22, "generation_mwh": 116663.14959, "opex": 4090621.56, "year": 25 } ], "title": "100 MWp · tracker" } ], "category": "energy", "description": "Compare solar capacity and mounting cases with explicitly synthetic rate cards.", "edition": "Precomputed synthetic browser edition", "limits": "No market-price claims; financing, tax and revenue are excluded.", "method": "Arithmetic line expressions and discounted costs divided by discounted generation.", "name": "Solstice Cost Studio", "omitted_runtime_fields": [ "elapsed_ms", "quoted_at", "calculated_at" ], "provenance": "Original synthetic fixtures generated from the project engine. No operational or personal records.", "slug": "solstice-cost-studio", "source_visibility": "private", "subtitle": "Follow every lifecycle cost" }