GreenGenStorage Files for Giant Water Battery in California
Published Date: 4/4/2025
Notice
Summary
GreenGenStorage, LLC just filed a plan to build a big pumped storage hydroelectric project near Jackson, California, using two reservoirs to store and generate power. This affects local communities and the environment, with a clear schedule set for licensing and final changes. The project could impact energy costs and water use, with important deadlines coming soon for public input and final tweaks.
Analyzed Economic Effects
4 provisions identified: 1 benefits, 1 costs, 2 mixed.
Uses 85.7 acres of federal land
The proposed Mokelumne Pumped Storage Project would occupy 85.7 acres of Federal land administered by the U.S. Forest Service near Jackson in Amador and Calaveras Counties, California. The project filing identifies that federal land area and the project location.
Project size: 400 MW pumped storage plan
The application describes a pumped storage project with two reservoirs and a planned total generating capacity of 400 megawatts, plus tunnels, shafts, and an interconnection to the existing Salt Springs substation. The filing says the project would use PG&E reservoirs licensed under Mokelumne River Project No. 137.
Licensing schedule and amendment deadline
FERC set a preliminary hydro licensing schedule with key milestones in April 2025 and July 2025. If the Commission issues a Notice of Ready for Environmental Analysis, final amendments to the application must be filed no later than 30 days from that notice.
Public help for participation
FERC's Office of Public Participation (OPP) offers support to help members of the public — including landowners, community organizations, and Tribal members — access information and make filings like comments or interventions. OPP contact information is provided for assistance.
Personalized for You
How does this regulation affect your finances?
Personalize government policy and PRIA will tell you what this federal register document means for your household, plus every other regulation we track. PRIA reads each provision against your financial profile to show you exactly what matters to your wallet.
Key Dates
Department and Agencies
Related Federal Register Documents
2026-17101, Georgia Power Company; Notice of Application for Temporary Variance Accepted for Filing, Soliciting Comments, Motions To Intervene, and Protests
Georgia Power Company asked for a temporary change to rules at their Flint River Hydroelectric Project in Georgia. This could affect water quality rules and needs approval from state agencies. People have until September 17, 2026, to share their thoughts or get involved before any decisions are made.
2026-17103, Seefeld Corporation: Notice of Application for Surrender of Exemption Accepted for Filing, Soliciting Comments, Motions To Intervene, and Protests
Seefeld Corporation wants to give up its special exemption for the Smith Creek Hydroelectric Project in Washington. This change could affect local water quality rules and needs approval from the Washington Department of Ecology. People have until September 17, 2026, to share their thoughts or get involved before the decision moves forward.
2026-16925, Commission Information Collection Activities (FERC-725U); Comment Request; Extension
In compliance with the requirements of the Paperwork Reduction Act of 1995, the Federal Energy Regulatory Commission (Commission or FERC) is soliciting public comment on the currently approved information collection FERC-725U (1902-0274), Mandatory Reliability Standards for the Bulk Power System; CIP Reliability Standards. There are no proposed changes to the reporting requirements. The comment period ended on July 27, 2026, with no comments received.
2026-16739, Venture Global CP2 LNG, LLC, Venture Global CP Express, LLC; Notice of Scoping Period Requesting Comments on Environmental Issues for the Proposed CP2 LNG Expansion Project, and Notice of Public Scoping Sessions
2026-16616, Regulatory Agenda
We are publishing our regulatory agenda (the Agenda) in accordance with Public Law 96-354, "The Regulatory Flexibility Act," and Executive Order 12866, "Regulatory Planning and Review." FERC's complete Agenda, available on OMB's website at https://www.reginfo.gov, is a compilation of all rulemaking activities on which we have recently completed action or have proposed or are considering action. Our last Agenda was provided in May 2025 and in this current agenda, we have listed 42 rulemaking activities. We also note that the Agency has one inactive rulemaking that is not listed in this Agenda. This issuance of our Agenda contains ten (10) Pre-Rules, eleven (11) Notice of Proposed Rules, eight (8) Final Rules, and thirteen (13) Completed activities. Four (4) rulemakings are Section 3(f)(1) Significant; two (2) are Other Significant; one (1) is a routine rulemaking activity; two (2) are administrative, and thirty-two (32) are Substantive, Nonsignificant rulemaking activities.
2026-16637, Combined Notice of Filings
The Federal Energy Regulatory Commission got new filings from several natural gas pipeline companies about rate changes and rule updates. These changes could affect pipeline rates starting as soon as July 9, 2026, and some compliance updates kick in January 1, 2027. If you want to speak up or get involved, you need to comment by late August 2026.
Previous / Next Documents
Previous: 2025-05763, Agency Information Collection Activities; Proposed eCollection eComments Requested; Extension of a Previously Approved Collection; National Use-of-Force Data Collection
The FBI is asking to keep collecting data about how police use force, making sure they have the green light to continue. This helps keep track of important info that affects law enforcement and communities. No big changes or costs are expected, but the FBI wants to keep this info flowing smoothly.
Next: 2025-05766, Black Canyon Hydro, LLC; Notice of Intent To Prepare an Environmental Impact Statement for the Seminoe Pumped Storage Project, Schedule for Environmental Review, and Request for Comments
Black Canyon Hydro wants to build a pumped storage project near Seminoe Reservoir in Wyoming, and the government is studying how it might affect the environment. They’re asking locals and anyone interested to share their thoughts before making big decisions. This review will take some time, so expect updates and chances to comment through 2025.