Solar and wind grid system value in the United States: The effect of transmission congestion, generation profiles, and curtailment

Regions that have high penetration of solar and wind resources can experience an excess of energy supply, which drives down hourly power prices, particularly for renewables. This is a benefit for consumers, but the decline in market value can hurt producers, according to a new study from the Energy Department’s Berkeley Lab. 

The study tracked market value of energy and capacity produced by 2,100 utility scale power plants across major power markets through 2019.