Northeast Utilities pleaded guilty Monday to violating federal nuclear-safety and clean-water laws and agreed to pay $10 million, including the biggest penalty in the history of the nuclear power industry.
Prosecutors said the utility's offenses included releasing pollutants into Long Island Sound and supplying deliberately inaccurate information on employee license applications.
The public was never in any immediate danger, according to the Nuclear Regulatory Commission and the Environmental Protection Agency, and none of the violations involved any leaks of radioactive material.
The investigation is continuing.
Two utility subsidiaries, Northeast Utility Service Co. and Northeast Nuclear Energy Co., agreed to pay $6.65 million in fines and make $3.35 million in donations, including $1 million to the University of Connecticut for a chair in ethics and $1 million for the state's open-space preservation program.