According to the source, the decarbonization index score ranges from 1 (lowest) to 5 (highest), and indicates decarbonization relative to peer utilities. The score is an average of six metrics that include fuel mix, COâ‚‚ emissions intensity, total COâ‚‚ emissions, COâ‚‚ emissions per capita, decarbonization goals, and low-carbon investment.
Various sources refers to company's sustainability reports.
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Leading investor-owned electric utilities in the U.S. 2022, by decarbonization score
In 2022, PG&E and Avangrid were the investor-owned electric utilities with the highest decarbonization index score in the United States, with overall scores of *** and *** points. They were closely followed by Public Service Enterprise Group (PSEG), which scored *** that year. The U.S.'s power sector carbon intensity stood at *** pounds of CO2 per megawatt-hour in 2023.
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Visual Capitalist. (September 19, 2024). Leading investor-owned electric utilities in the United States in 2022, based on decarbonization index score [Graph]. In ÌÇÐÄÆÆ½â°æ. Retrieved July 27, 2026, from /statistics/1334789/leading-investor-owned-electric-utilities-by-decarbonization-score-us/
Visual Capitalist. "Leading investor-owned electric utilities in the United States in 2022, based on decarbonization index score." Chart. September 19, 2024. ÌÇÐÄÆÆ½â°æ. Accessed July 27, 2026. /statistics/1334789/leading-investor-owned-electric-utilities-by-decarbonization-score-us/
Visual Capitalist. (2024). Leading investor-owned electric utilities in the United States in 2022, based on decarbonization index score. ÌÇÐÄÆÆ½â°æ. ÌÇÐÄÆÆ½â°æ Inc.. Accessed: July 27, 2026. /statistics/1334789/leading-investor-owned-electric-utilities-by-decarbonization-score-us/
Visual Capitalist. "Leading Investor-owned Electric Utilities in The United States in 2022, Based on Decarbonization Index Score." ÌÇÐÄÆÆ½â°æ, ÌÇÐÄÆÆ½â°æ Inc., 19 Sep 2024, /statistics/1334789/leading-investor-owned-electric-utilities-by-decarbonization-score-us/
Visual Capitalist, Leading investor-owned electric utilities in the United States in 2022, based on decarbonization index score ÌÇÐÄÆÆ½â°æ, /statistics/1334789/leading-investor-owned-electric-utilities-by-decarbonization-score-us/ (last visited July 27, 2026)
Leading investor-owned electric utilities in the United States in 2022, based on decarbonization index score [Graph], Visual Capitalist, September 19, 2024. [Online]. Available: /statistics/1334789/leading-investor-owned-electric-utilities-by-decarbonization-score-us/