Muddy Run P-2355

General information

Waterway  Susquehanna River
Current status   Active license 
Type of facility Pumped Storage
Mode of hydropower generation Peaking
Type of permit FERC License

FERC information

FERC docket # P-2355
FERC project name Muddy Run Pumped Storage
Permit issued 12/17/15
Permit expiration 11/26/55

Ownership and operation

Owner Exelon Power
Owner type Wholesale Power Marketer
Year first online (pumped storage) 1967
Transmission or distribution system owner PECO Energy Co

Power and generating capacity

Number of units 8
Total capacity from pumped storage turbine-generator units 1,072.0 MW
Pumped storage gross generation in megawatt hours for each powerplant 1,542,392.7 MWH

The Muddy Run Project is located 22 miles upstream of the Chesapeake Bay on the eastern side of the Susquehanna River, within Lancaster County, Pennsylvania.

Muddy Run is one of five projects located on the Lower Susquehanna River. The three projects upstream from the Muddy Run are: York Haven Project (P-1888), and Safe Harbor Project (P-1025), Holtwood (P-1881). The Conowinigo Conowingo Hydroelectric Project (P-405), downstream of the Muddy Run project, is currently seeking a new license.


Water Quality Certification Issued 06-03-2014
Draft EIS Issued 07-30-2014

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