Fossil fuels were the largest source of electricity generation in Pennsylvania in 2021, with natural gas alone accounting for more than half of the power generated in the U.S. state. Nuclear power ranked second, representing about **** of Pennsylvania's electricity production that year.
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NEI. (August 31, 2022). Distribution of electricity generation in Pennsylvania, United States in 2021, by source [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 19, 2026, from /statistics/1287663/pennsylvania-electricity-generation-share-by-source/
NEI. "Distribution of electricity generation in Pennsylvania, United States in 2021, by source." Chart. August 31, 2022. ÌÇÐÄÆƽâ°æ. Accessed July 19, 2026. /statistics/1287663/pennsylvania-electricity-generation-share-by-source/
NEI. (2022). Distribution of electricity generation in Pennsylvania, United States in 2021, by source. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 19, 2026. /statistics/1287663/pennsylvania-electricity-generation-share-by-source/
NEI. "Distribution of Electricity Generation in Pennsylvania, United States in 2021, by Source." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 31 Aug 2022, /statistics/1287663/pennsylvania-electricity-generation-share-by-source/
NEI, Distribution of electricity generation in Pennsylvania, United States in 2021, by source ÌÇÐÄÆƽâ°æ, /statistics/1287663/pennsylvania-electricity-generation-share-by-source/ (last visited July 19, 2026)
Distribution of electricity generation in Pennsylvania, United States in 2021, by source [Graph], NEI, August 31, 2022. [Online]. Available: /statistics/1287663/pennsylvania-electricity-generation-share-by-source/
