# description
PV asset extending a variable production asset. Rated power aligns with s4grid:ActivePower; other fields are u2demo extensions.

# allOf[].properties.rated_capacity.description
Rated active power of the PV unit [kW] (semantically aligned with s4grid:ActivePower at nominal conditions).

# allOf[].properties.irradiance.description
Irradiance time series at the PV location (u2demo extension). Each element is a TimeValue (time + irradiance).

# allOf[].properties.annualized_investment_cost.description
Annualized investment cost for the PV asset (u2demo economic parameter).