Average expenses for the operation of hydroelectric power plants run by major U.S. investor-owned electric utilities from 1998 to 2024
(in mills per kilowatt-hour)
Characteristic
Expenses in mills per kilowatt-hour
2024
15.07
2023
14.71
2022
12.44
2021
12.3
2020
12.71
2019
10.8
2018
10.65
2017
10.29
2016
10.98
2015
13.42
2014
11.9
2013
10.88
2012
11.34
2011
8.88
2010
9.15
2005
6.68
2000
5.74
1999
5.38
1998
4.67
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Includes operation, maintenance, and fuel expenses.
Including both conventional hydro and pumped storage.
This statistic was compiled using several releases of the publication.
A mill is a monetary cost and billing unit equal to 1/1000 of the U.S. dollar (equivalent to 1/10 of one cent).
Citation formats
Hydroelectric power plant operating expenses 1998-2024
Operating expenses for conventional and pumped storage hydroelectric power plants run by major United States investor-owned electric utilities totaled 15.07 mills per kilowatt-hour in 2024. According to the source, a mill is a monetary cost and billing unit equal to 1/1000 of the U.S. dollar (equivalent to 1/10 of one cent).Â
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EIA. (October 16, 2025). Average expenses for the operation of hydroelectric power plants run by major U.S. investor-owned electric utilities from 1998 to 2024 (in mills per kilowatt-hour) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 26, 2026, from /statistics/195828/us-hydroelectric-power-plant-operating-expense-since-1998/
EIA. "Average expenses for the operation of hydroelectric power plants run by major U.S. investor-owned electric utilities from 1998 to 2024 (in mills per kilowatt-hour)." Chart. October 16, 2025. ÌÇÐÄÆƽâ°æ. Accessed July 26, 2026. /statistics/195828/us-hydroelectric-power-plant-operating-expense-since-1998/
EIA. (2025). Average expenses for the operation of hydroelectric power plants run by major U.S. investor-owned electric utilities from 1998 to 2024 (in mills per kilowatt-hour). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 26, 2026. /statistics/195828/us-hydroelectric-power-plant-operating-expense-since-1998/
EIA. "Average Expenses for The Operation of Hydroelectric Power Plants Run by Major U.S. Investor-owned Electric Utilities from 1998 to 2024 (in Mills per Kilowatt-hour)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 16 Oct 2025, /statistics/195828/us-hydroelectric-power-plant-operating-expense-since-1998/
EIA, Average expenses for the operation of hydroelectric power plants run by major U.S. investor-owned electric utilities from 1998 to 2024 (in mills per kilowatt-hour) ÌÇÐÄÆƽâ°æ, /statistics/195828/us-hydroelectric-power-plant-operating-expense-since-1998/ (last visited July 26, 2026)
Average expenses for the operation of hydroelectric power plants run by major U.S. investor-owned electric utilities from 1998 to 2024 (in mills per kilowatt-hour) [Graph], EIA, October 16, 2025. [Online]. Available: /statistics/195828/us-hydroelectric-power-plant-operating-expense-since-1998/
