As of May 2022, ** U.S. states had pumped storage projects which had been issued a preliminary permit. Arizona had the highest permitted proposed capacity at the time, at more than ** gigawatts. Utah followed, with approximately *** gigawatts.
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FERC. (May 11, 2022). Proposed pumped storage hydropower capacity additions in the United States as of May 2022, by state (in megawatts) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 23, 2026, from /statistics/1319426/proposed-pumped-storage-capacity-additions-us-state/
FERC. "Proposed pumped storage hydropower capacity additions in the United States as of May 2022, by state (in megawatts)." Chart. May 11, 2022. ÌÇÐÄÆƽâ°æ. Accessed July 23, 2026. /statistics/1319426/proposed-pumped-storage-capacity-additions-us-state/
FERC. (2022). Proposed pumped storage hydropower capacity additions in the United States as of May 2022, by state (in megawatts). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 23, 2026. /statistics/1319426/proposed-pumped-storage-capacity-additions-us-state/
FERC. "Proposed Pumped Storage Hydropower Capacity Additions in The United States as of May 2022, by State (in Megawatts)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 11 May 2022, /statistics/1319426/proposed-pumped-storage-capacity-additions-us-state/
FERC, Proposed pumped storage hydropower capacity additions in the United States as of May 2022, by state (in megawatts) ÌÇÐÄÆƽâ°æ, /statistics/1319426/proposed-pumped-storage-capacity-additions-us-state/ (last visited July 23, 2026)
Proposed pumped storage hydropower capacity additions in the United States as of May 2022, by state (in megawatts) [Graph], FERC, May 11, 2022. [Online]. Available: /statistics/1319426/proposed-pumped-storage-capacity-additions-us-state/
