Stale Skies: The Growing Liability Risk of Outdated Weather Data in Solar Financial Projections
The Typical Meteorological Year datasets that underpin most solar financial models were constructed from atmospheric observations that predate the climate conditions engineers are designing for today. As the gap between historical baselines and current irradiance patterns widens, the profession faces a compound problem: technical inaccuracy in production forecasts and growing legal exposure when those forecasts fail to materialize.