Susquehanna Steam Electric Station

Operator: Talen Energy
Location: 7 miles NE of Berwick, PA
PPL Susquehanna, LLC
769 Salem Blvd.
Berwick, PA 18603
Operating License Unit 1: Issued – July 17,1982, Expires – July 17, 2042
Operating License Unit 2: Issued – March 23, 1984, Expires – March 23, 2044
Reactor Type: Boiling Water Reactor (BWR)
Electrical Output Unit 1: 1315 Megawatts Electrical (MWe)
Electrical Output Unit 2: 1315 Megawatts Electrical (MWe)
Located on a hilltop overlooking the scenic Susquehanna River Valley in northeastern Pennsylvania, the Susquehanna Steam Electric Station is a 2,630-megawatt facility with two boiling water reactors and two closed-cycle cooling towers. As a result of recent Extended Power Uprate work, Susquehanna now proudly operates the largest boiling water reactors in the United States.
The Susquehanna plant, located about seven miles north of Berwick, is owned jointly by Susquehanna Nuclear LLC and Allegheny Electric Cooperative Inc. and is operated by Susquehanna Nuclear. Susquehanna Nuclear LLC is one of Talen Energy Corporation’s generating affiliates. For information, visit
Pennsylvania Power & Light applied to the U.S. Nuclear Regulatory Commission for a construction permit in April 1971. The NRC issued the permit Nov. 2, 1973, and construction began later that month. Unit 1 began commercial operations in 1983 and Unit 2 in 1985. The units began generating electricity under 40-year operating licenses. In November 2009, following a rigorous process and review, the NRC granted a 20-year extension of the original licenses, allowing the units to operate until 2042 and 2044 respectively.
The 1,200-acre Salem Township, Luzerne County site was chosen for its stable geology, available cooling water from the Susquehanna River, accessible power supply lines to other parts of the service area and convenient highway and rail transportation.
General Electric Co. designed the Susquehanna plant’s twin reactors. Bechtel Power Corp. was the prime contractor.
With equipment and system upgrades completed during the 2010 refueling and maintenance outage, Unit 1 at the Susquehanna plant became the largest BWR in terms of thermal power and generating capacity in the United States. When operating at 100 percent power, Susquehanna's Unit 1 has a capacity of 3,952 megawatts thermal (a measure of the heat produced in the reactor) and over 1,300 megawatts electrical (a measure of the electricity produced by the generator).
The completion of upgrades during the 2010 Unit 1 outage continued a seven-year project begun in 2005 to increase the amount of electricity the Susquehanna nuclear plant can safely and reliably generate. Actual increases in reactor power output commenced in a phased approach starting in 2008. The extended power uprate project concluded in 2011 after further upgrades to Unit 2 were completed, at which point Unit 2's capacity is similar to Unit 1 for thermal and electrical energy.
View Plant Photos
  • PPL Susquehanna from Council Cup across the Susquehanna River valley
  • Sunset over Susquehanna Station, taken from Council Cups on the east side of the Susquehanna River.
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