Repowering

Method

• Baseline plant reconstructed from declared module count/power where available, else from DC capacity with era-typical module power for the commissioning year.
• Degradation applied per operating year against era-typical rates to estimate today's effective capacity.
• Repowered case: current module efficiency on the same usable area, DC/AC re-optimised against the registered connection.
• Energy from metered/declared production where available, else a latitude-climatological specific-yield estimate (labelled); economics as incremental NPV of the uplift at labelled capex and capture-price assumptions.

Data sources

• National capacity registries (capacity, commissioning year)
• PVGIS-class irradiance data for site yield
• Era-typical module/inverter characteristics (internal tables, labelled per run)

Limitations

• Actual degradation, racking condition, stringing and cable sizing require owner data or inspection.
• Legacy support-scheme rules on capacity changes are flagged, not adjudicated.
• Screening result with labelled assumptions — not a bankable study, an engineering design, or investment advice.
• Site-specific facts the owner has not provided are filled with labelled, era- or country-typical defaults.