| September 1973 | Indian Point Reactor 2 is licensed to operate. |
| October 1974 | Indian Point Reactor 1 is shutdown. |
| April 1976 | Indian Point Reactor 3 is licensed to operate. |
| July 1977 | A transformer explosion at Indian Point triggers a major blackout and causes dozens of people to flee fearing a major accident. |
| March 1979 | In reaction to a partial meltdown at Three Mile Island, President Jimmy Carter mandates evacuation plans for the nation's 103 power plants. |
| October 1980 | Indian Point owner Con Edison discovers over 100,000 gallons of radioactive water spilled in the containment building of Indian Point 2. The Nuclear Regulatory Commission (NRC), local officials, and the public are not notified of the accident for three days. |
| September 1982 | A study by the NRC, Calculations of Reactor Accident Consequences, outlines a disastrous scenario in the event of a meltdown at Indian Point. |
| June 1993 | The NRC fines Indian Point 3 $300,000 for 17 safety violations and places plant on "Watch List" of troubled plants. |
| September 1993 | 900 gallons of radioactive water accidentally dumped into the Hudson. |
| May 1994 | In addition to accidental releases, Con Ed admits as much as 150 gallons of radioactive water had been leaking from the site each day for the past four years. |
| June 1994 | An underground pipe breaks at Indian Point 3 plant spilling 1,600 gallons of contaminated water into the Hudson. |
| September 1995 | The New York Power Authority temporarily shuts Indian Point 3, for safety and operational procedures review. |
| August 1997 | Indian Point 2 is temporarily shut down, due to defective safety valve settings |
| November 1998 | Indian Point 3 is temporarily shut down in response to unauthorized entry into protected area. |
| February 2000 | A full scale alert declared at Indian Point after steam generator tube rupture releases contamination. Both reactors remain off-line for most of the year. |
| April 2000 | The NRC rates Indian Point 2 most trouble-plagued nuclear power plant in the country. |
| September 2002 | The Westchester County Legislature unanimously passes a resolution calling for the decommissioning and closing of Indian Point nuclear facility. More than 60 regional municipalities pass similar resolutions. |
| September 2002 | Entergy, who now owns Indian Point, temporarily shuts down Indian Point 2 to prevent a growing hydrogen gas leak from reaching potentially explosive levels in the air outside the nuclear power plant. |
| January 2003 | The Witt Report, an independent study commissioned by Governor George Pataki to evaluate the evacuation plan, is made public. The report found that the evacuation plan can't adequately protect the public. |
| January 2003 | County Executives from Westchester, Putnam, Rockland and Orange counties refuse to sign their respective portions of the evacuation plan. |
| January 2003 | The State Emergency Management Office notifies the Federal Emergency Management Agency that they will not endorse the evacuation plans. |
| February 2003 | In reaction to moves by the state and counties, FEMA admits it cannot give "reasonable assurance" that the plan will adequately protect the public. |
| August 2003 | FEMA waffles on its position, and together with the NRC announces recertification of the evacuation plan despite continued flaws and overwhelming support for a shut-down. |
| August 2003 | Westchester County files lawsuit to appeal actions by the NRC. |