[Federal Register Volume 89, Number 106 (Friday, May 31, 2024)]
[Notices]
[Pages 47151-47152]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2024-11995]


-----------------------------------------------------------------------

DEPARTMENT OF ENERGY

Federal Energy Regulatory Commission

[Project No. 15305-000]


Twentymile Pumped Storage, LLC; Notice of Preliminary Permit 
Application Accepted for Filing and Soliciting Comments, Motions To 
Intervene, and Competing Applications

    On March 10, 2023, Twentymile Pumped Storage, LLC, filed an 
application for a preliminary permit, pursuant to section 4(f) of the 
Federal Power Act (FPA), proposing to study the

[[Page 47152]]

feasibility of the Twentymile Pumped Storage Project to be located near 
the town of Oak Creek in Routt County, Colorado. The sole purpose of a 
preliminary permit, if issued, is to grant the permit holder priority 
to file a license application during the permit term. A preliminary 
permit does not authorize the permit holder to perform any land-
disturbing activities or otherwise enter upon lands or waters owned by 
others without the owners' express permission.
    The proposed project will have an above ground upper reservoir and 
an underground lower reservoir. A net hydraulic head of approximately 
1,300 feet is expected between the maximum water level in the upper 
reservoir and minimum water level in the underground lower reservoir. 
Initial filling of the upper reservoir will use existing available 
water located currently in the mine. The existing sealed voids of 
tunnels and galleries at mine sites will become the lower reservoir. 
The upper surface reservoir will have a surface elevation of 
approximately 7,600 feet msl and will be connected to the lower 
reservoir via an underground water conveyance system-penstock, access 
shafts and tunnels, and ventilation shafts, with a new underground 
powerhouse containing reversible pump-turbine generator units. The 
single penstock would be 16 feet in diameter that bifurcates to two 
units in the powerhouse.
    The approximate storage volume of the upper reservoir will be 
approximately 1,550 acre-feet. The lower reservoir would have a surface 
elevation of 6,000 feet msl with a storage volume of approximately 
1,550 acre-feet. A new, approximately 1.8-mile long 230-kilovolt (kV) 
overhead interconnection line will extend from the powerhouse to a 
substation. The powerhouse would contain two turbines and generators, 
with a generating capacity of 250 megawatts (MW) based on available 
hydraulic head and water to fill the reservoirs. Each turbine is rated 
for 133 MW, and each generator is rated for 125 MW. The estimated 
average annual generation is 547,500 MWh.
    Applicant Contact: Ushakar Jha, Twentymile Pumped Storage, LLC, 100 
S Olive St., West Palm Beach, Florida 33401; email: 
[email protected]; phone: (503) 309-2496.
    FERC Contact: Lee Baker; email: [email protected]; phone: 
(202) 502-8554.
    Deadline for filing comments, motions to intervene, competing 
applications (without notices of intent), or notices of intent to file 
competing applications: 60 days from the issuance of this notice. 
Competing applications and notices of intent must meet the requirements 
of 18 CFR 4.36.
    The Commission strongly encourages electronic filing. Please file 
comments, motions to intervene, notices of intent, and competing 
applications using the Commission's eFiling system at https://ferconline.ferc.gov/eFiling.aspx. Commenters can submit brief comments 
up to 6,000 characters, without prior registration, using the eComment 
system at https://ferconline.ferc.gov/QuickComment.aspx. You must 
include your name and contact information at the end of your comments. 
For assistance, please contact FERC Online Support. In lieu of 
electronic filing, you may submit a paper copy. Submissions sent via 
the U.S. Postal Service must be addressed to: Debbie-Anne A. Reese, 
Acting Secretary, Federal Energy Regulatory Commission, 888 First 
Street NE, Room 1A, Washington, DC 20426. Submissions sent via any 
other carrier must be addressed to: Debbie-Anne A. Reese, Acting 
Secretary, Federal Energy Regulatory Commission, 12225 Wilkins Avenue, 
Rockville, Maryland 20852. The first page of any filing should include 
docket number P-15305-000.
    More information about this project, including a copy of the 
application, can be viewed or printed on the ``eLibrary'' link of the 
Commission's website at http://www.ferc.gov/docs-filing/elibrary.asp. 
Enter the docket number (P-15305) in the docket number field to access 
the document. For assistance, contact FERC Online Support.

    Dated: May 24, 2024.
Debbie-Anne A. Reese,
Acting Secretary.
[FR Doc. 2024-11995 Filed 5-30-24; 8:45 am]
BILLING CODE 6717-01-P