The Robert E. Ginna Nuclear Power Plant, commonly known as Ginna. It is a nuclear power plant located on the southern shore of Lake Ontario, in the town of Ontario, Wayne County, New York, approximately 20 miles (32 km) east of Rochester, New York.^[1] It is a single unit Westinghouse 2-Loop pressurized water reactor, similar to those at Point Beach, Kewaunee, and Prairie Island. Ginna is one of the oldest nuclear power reactors still in operation in the United States, having gone into commercial operation in 1970.

Ginna Nuclear Power Plant is owned and operated by Constellation Energy Group, who purchased it from Rochester Gas and Electric in 2004.

The Ginna Nuclear Power Plant was the site of a minor nuclear accident when, on January 25, 1982, a small amount of radioactive steam leaked into the air after a steam-generator tube ruptured. The leak which lasted 93 minutes led to the declaration of a site emergency. The rupture was caused by a small pie-pan-shaped object left in the steam generator during an outage. This was not the first time a tube rupture had occurred at an American reactor but following on so closely behind the Three Mile Island accident caused considerable attention to be focused on the incident at the Ginna plant. In total, 485.3 curies of noble gas and 1.15 millicuries of iodine-131 were released to the environment.

In 1996 the original Westinghouse supplied steam generators were replaced by two brand new Babcock and Wilcox steam generators. This project enabled an uprating of Ginna's output several years later and was a major factor in the approval of the plant's operating license extension for 20 years beyond the original license.

Ginna Nuclear Power Plant
Country	United States
Locale	Ontario, New York
Coordinates	43°16′40″N 77°18′36″W / 43.27778°N 77.31°W / 43.27778; -77.31
Status	Operational
Commission date	June 1, 1970
Licence expiration	September 18, 2029
Operator(s)	Constellation Energy
Power generation information
Installed capacity	610 MW
Annual generation	4,930 GW·h