In December 1951, an experimental reactor produced the first electric power from the atom, lighting four light bulbs. Nuclear energy has been used since 1953 to power U.S. Navy vessels, and since 1955 to provide electricity for home use.

Today, 30 countries worldwide operate more than 430 nuclear plants for electricity generation, providing about 16 percent of the world’s energy.

The United States has about 100 commercial nuclear power plants. Nuclear power supplies about 20 percent of the nation’s electricity each year, and is the major source of electricity that can be generated around-the-clock without carbon dioxide emissions.

 

Susquehanna Plant Timeline

1970 – PPL announces construction plans for the plant and chooses a site.

1973 – The U.S. Atomic Energy Commission issues a construction permit and work begins in November. More than 5,000 people work to design, build and test the plant.

1982 – Unit 1 receives an operating license in July and generates its first electricity in November.

1983 – Unit 1 begins commercial service in June.

1984 – Unit 2 receives an operating license in March and generates its first electricity in July.

1985 – Unit 2 begins commercial service in February. Final cost to build the plant was $4.1 billion.

2003 – A new turbine installed on Unit 2 increases capacity by 50 megawatts.

2004 – A new turbine installed on Unit 1 increases capacity by 50 megawatts.

2009 – The Nuclear Regulatory Commission approved the renewal of Susquehanna’s operating licenses for an additional 20 years beyond their original 40-year licenses. Unit 1 is licensed until 2042. Unit 2 is licensed until 2044.

2010 – Installed a new digital control system on Unit 1.

2011 – Installed a new digital control system on Unit 2.

2011-2015 – Made a number of modifications to plant equipment, purchased additional equipment, changed procedures and updated training to reflect lessons learned from the 2011 event in Fukushima, Japan.

2015 – Susuquehanna became part of Talen Energy.