In its latest monthly "Electric Power Monthly" report (with data through January 31, 2024), EIA says the combination of utility-scale and small-scale (e.g., rooftop) solar increased by 20.5% compared to the first month of last year. As a result, solar’s share of total U.S. electrical generation in January 2024 rose to 3.8% compared to 3.4% a year earlier.

However, the electrical output of other renewable energy sources fell: geothermal by 12.2%, wind by 10.8%, biomass by 7.1%, and hydropower by 4.7%. Taken together, electrical generation by all renewable sources was 4.2% lower than last January and renewables’ share of total generation fell from 22.6% in January 2023 to 19.8% in January 2024.