# Solar Energy Forecast Validation for Extended Areas & Economic Impact of Forecast Accuracy

This article evaluates the accuracy of solar forecast models, including SolarAnywhere®, as a function of geographic footprint ranging from a single point, to regions spanning several hundred kilometers. The forecast time horizons range from one-hour ahead, to two-days ahead.

In addition, a new accuracy metric is introduced that quantifies the cost of remedying forecast errors with backup generation if the forecasts overpredict, or with curtailment in cases of underprediction.