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Posted October 16, 2026

U.S. small-scale solar generation has quadrupled in the last decade ›

Annual total small-scale solar generation by state (2016-2026)

Data source: U.S. Energy Information Administration, Annual Electric Power Industry Report

We estimate that U.S. generation from small-scale or rooftop solar photovoltaic systems (smaller than 1 megawatt of capacity) has increased from 18,812 gigawatthours (GWh) to 92,979 GWh over the last decade. The four states with the highest generation of small-scale solar in the country—California, Arizona, Texas, and Florida—are in regions with more abundant solar resources. Even though it is in a region with lower solar resources, New York ranks as the fifth-largest rooftop solar generation producer as a result of capacity growth supported by technology improvements and state incentives.

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