PV8.ai

PV repowering

PV8 demonstration solar plant, HR · 4 MWp · synthetic inputs

ILLUSTRATIVE SCREENING

Compare the existing array with a module replacement scenario; physical fit remains subject to engineering review.

4,000 kWpExisting PVFrozen screening calculation

6,500 kWpModelled replacementFrozen screening calculation

2,750 MWh/yearAdded annual generationFrozen screening calculation

€1,508,750Investment allowanceFrozen screening calculation

What this scenario establishes

An annual model is included in this frozen calculation. Its tax basis and assumptions must be reviewed before use.

Amounts are in EUR. Export capacity is not evidence of an import right. Other routes are alternatives, not additive revenue promises.

Illustrative inputs

Synthetic 4 MWp plant: 16,000 modules × 250 Wp.
4,400 MWh/year generation and 8 ha site area are illustrative inputs.
No grid import agreement, customer contract or surveyed layout is supplied.

Three next steps

Confirm as-built dimensions, mounting compatibility and structural loading.
Replace screening costs with module, inverter and installation quotations.
Review tariff, grid and lender conditions before changing the plant.

Use this example to see the decision process. Your own result depends on your plant, assumptions and evidence; it is not a financing approval.

Explore this route in PV8

Replacement layout

Compare replacement modules with the existing arrangement.

Lost and added generation

Include downtime and the existing production baseline.

End-of-life economics

Connect removed equipment and recycling assumptions to the investment case.

Calculation basis and frozen source

Generated offline with PV8 engine code. No customer information or live provider response is included. Raw reference inputs retain their source currencies, such as USD mining assumptions; financial figures above use EUR. Rebuild recipe: scripts/build_public_sample_snapshots.py.

Snapshot SHA-256: 15a9a5fb847487eca07d67d6e2015ce69650bd1041fd974fbd2395fcbe9bb9d9

{
  "currency": "EUR",
  "engine_revision": "fd7ec38f0948dbcbe86c2b1fa40bc2b631022b1d",
  "inputs": {
    "ac_kw": 3500,
    "annual_energy_mwh": 4400,
    "attributes": {
      "public_sample": true
    },
    "capture_price_eur_mwh": 80,
    "cod_year": 2010,
    "connection_point_id": null,
    "connection_voltage_kv": null,
    "contracted_price_eur_mwh": null,
    "country": "HR",
    "currency": "EUR",
    "dc_kwp": 4000,
    "dso": null,
    "free_area_ha": 1.5,
    "grid_export_kw": 3500,
    "grid_import_kw": null,
    "id": "sample-pv",
    "land_tenure": "unknown",
    "largest_free_polygon_ha": 1,
    "latitude": 45.3,
    "lease_end_year": null,
    "longitude": 17.8,
    "module_status": "legacy",
    "module_weight_kg": 20,
    "module_wp": 250,
    "modules_per_string": null,
    "modules_per_table": 32,
    "n_modules": 16000,
    "n_tables": 500,
    "name": "PV8 demonstration solar plant",
    "offtake_contracted_pct": null,
    "offtake_merchant_pct": null,
    "organisation_id": "public-synthetic-only",
    "site_area_ha": 8,
    "sources": [
      "Synthetic demonstration assumptions; no owner records"
    ],
    "strings": null,
    "tariff_end_date": null,
    "transformer_kva": null,
    "uploads": {}
  },
  "recipe_sha256": "f38ceb7ed80173755b335047d4c65f4206d8031b6292ca7d9a28a0dd3c894bb5",
  "result": {
    "assumptions": [
      "Modules per table after repowering = 20 (today 32) — ERA_AREA: area-equivalent re-pack of the installed table footprint: 32 × 1825×926 mm (era-typical 250 Wp module area (14.8% STC efficiency, SCREENING ASSUMPTION)) holds 20 × 2384×1134 mm at a 20 mm gap; table envelope not recorded.",
      "Off-take regime not set — treated as 100% merchant.",
      "Construction outage 3.0 month(s) (screening assumption ~0.75 months/MWp of scope, 1–6 bounded): 1,100 MWh of in-scope production (€88,000) foregone once and carried in the incremental cash flow alongside CAPEX.",
      "First-year LID is a separate event: current plant 0% across 100% of its energy basis; repowered modules 1.5% across 100.0% of the plant. Annual degradation begins from the post-LID baseline in year 2.",
      "Inverter lifecycle: 15-year useful life; current age 16 years (ASSET_COD_SCREENING_PROXY); 7 downtime days and €0 residual value per whole-plant replacement. Replacement CAPEX is the PV8 screening inverter rate.",
      "P50, P75, P90 and the selected downside use the same visible correlated-lognormal uncertainty contract as lifecycle energy, cash flows and the frozen report; no global default haircut is applied.",
      "racking_replacement_eur_per_wp = 0.075",
      "module_cost_eur_per_wp = 0.11",
      "install_cost_eur_per_wp = 0.05",
      "removal_cost_eur_per_module = 8.0",
      "inverter_cost_eur_per_w = 0.03",
      "transformer_cost_eur_per_kva = 15.0",
      "bos_recable_eur_per_wp = 0.02",
      "recycling_cost_eur_per_module = 6.0",
      "scrap_value_eur_per_module = 2.0",
      "testing_eur_per_module = 2.5",
      "packing_eur_per_module = 1.5",
      "secondlife_eur_per_wp = {'low': 0.02, 'base': 0.045, 'high': 0.08}",
      "Continue-operating energy value = 80.00 €/MWh; repowered energy value = 80.00 €/MWh.",
      "Continue-operating degradation = 0.7%/yr and year-one operating cost = €46,800; repowered degradation = 0.4%/yr and year-one operating cost = €51,480. O&M, availability, insurance, lease, warranty, maintenance and terminal values are listed in the operating lifecycle and remain editable run inputs."
    ],
    "decision_stage": "SCREENING",
    "engineering": {
      "baseline_basis": "RECORDED",
      "candidate": "generic 650 Wp class",
      "candidate_module_wp": 650.0,
      "candidate_source": "platform default",
      "dc_kwp_after": 6500.0,
      "dc_kwp_before": 4000.0,
      "dc_uplift_kwp": 2500.0,
      "existing_module_wp": 250,
      "inverter_strategy": "replace inverters in repowered blocks",
      "layout_evidence": "UNKNOWN — source drawings carry no explicit stage language; classify before construction decisions (stage is never inferred from appearance)",
      "modules_installed": 10000,
      "modules_per_table_existing": 32,
      "modules_per_table_new": 20,
      "modules_removed": 16000,
      "mounting_structures": "UNKNOWN — installed or candidate module dimensions missing; upload the installed module's datasheet/PAN to determine whether structures can be retained",
      "orientation": "UNKNOWN",
      "plant_dc_kwp_after": 6500.0,
      "plant_dc_kwp_before": 4000,
      "scope": "500/500 tables (full)",
      "structural": "UNVERIFIED — per-table module mass 640 → 646 kg (+1%) — structural verification of tables/foundations REQUIRED",
      "structural_mass_delta_pct": 0.9,
      "structure_strategy": "keep existing structures",
      "table_envelope_mm": null,
      "table_geometry_basis": "ERA_AREA",
      "table_geometry_note": "area-equivalent re-pack of the installed table footprint: 32 × 1825×926 mm (era-typical 250 Wp module area (14.8% STC efficiency, SCREENING ASSUMPTION)) holds 20 × 2384×1134 mm at a 20 mm gap; table envelope not recorded",
      "table_module_mass_kg": "640 → 646",
      "transformer": "verify transformer, switchgear, protection, metering and PCC settings against the selected AC envelope; an AC increase is not inferred from a DC-only scope"
    },
    "finance": {
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      "added_revenue_eur_yr": 218166,
      "calculated_capex_eur": 1508750,
      "capex_basis": "PV8_SCREENING_COST_STACK",
      "capex_eur": 1508750,
      "capex_eur_per_incremental_mwh_yr": 549,
      "capex_eur_per_kwp_uplift": 603.5,
      "comparison_horizon_years": 20,
      "construction_lost_mwh": 1100.0,
      "construction_lost_revenue_eur": 88000,
      "construction_months": 3.0,
      "construction_months_basis": "SCREENING_ASSUMPTION",
      "current_lifecycle_series_id": "pv-series-106e08b732671623",
      "current_operating_lifecycle_id": "ops-series-40b541c439c43ed0",
      "discount_rate": 0.08,
      "discounted_payback_years": 11.604761204842557,
      "financial_model": {
        "currency": "EUR",
        "locale": "hr-HR",
        "missing": [],
        "notice": null,
        "project_finance": {
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              "tax_eur": 0.0,
              "terminal_value_eur": -0.08,
              "year": 1
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          "economics": {
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            "upfront_fee_pct": 0.0
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          "sources_and_uses": {
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        "status": "MODELLED"
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      "repowered_lifecycle_series_id": "pv-series-0665b87286f94d61",
      "repowered_operating_lifecycle_id": "ops-series-4b30473203b7f1fb"
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    "kind": "repowering"
  },
  "sha256": "15a9a5fb847487eca07d67d6e2015ce69650bd1041fd974fbd2395fcbe9bb9d9"
}