Three Mile Island Generating Station will be retired early by Sept. 30, 2019, Exelon Corp. announced today, unless policy reforms occur in the meantime.

"Today is a difficult day, not just for the 675 talented men and women who have dedicated themselves to operating Three Mile Island safely and reliably every day, but also for their families, the communities and customers who depend on this plant to produce clean energy and support local jobs," said Chris Crane, Exelon president and CEO.

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TMI directly employs 675 workers and contracts another 1,500 local union workers for refueling outages. The station provides more than $1 million in state property taxes and more than $300,000 in local community giving each year.

Staff transitions are expected within six months of the plant's final shut down, Crane said.

"Like New York and Illinois before it, the Commonwealth has an opportunity to take a leadership role by implementing a policy solution to preserve its nuclear energy facilities and the clean, reliable energy and good-paying jobs they provide. We are committed to working with all stakeholders to secure Pennsylvania's energy future, and will do all we can to support the community, the employees and their families during this difficult period," Crane said in a news release.

Exelon is taking the first steps to shut down the nuclear plant, including:

Informing key stakeholders, which will include sending PJM a deactivation notice and making permanent shutdown notifications to the Nuclear Regulatory Commission within 30 days.

Immediately taking one-time charges of $65-110 million for 2017, and accelerating approximately $1.0-1.1 billion in depreciation and amortization through the announced shutdown date.

Terminating capital investment projects required for long-term operation of TMI.

Canceling 2019 fuel purchases and outage planning, impacting about 1,500 outage workers.

Absent policy reforms, the loss of Pennsylvania nuclear plants would increase air pollution, compromise the resiliency of the electric grid, raise energy prices for consumers, eliminate thousands of good-paying local jobs and weaken the state's economy, Crane said.

Despite producing 93 percent of the state's emissions-free electricity and avoiding 37 million tons of carbon emissions -- the equivalent of keeping 10 million cars off the road every year -- nuclear power is not included in the state's Alternative Energy Portfolio Standard, Crane said.

Yet 16 clean power sources including solar, wind and hydro energy are supported by this state energy policy, Crane said.

Amending the AEPS is one of many potential solutions to preserve Pennsylvania's nuclear plants. Other options include establishing a zero emissions credit program, similar to the approach being implemented in Illinois and New York.

Exelon is committed to working with its stakeholders to find the best solution for Pennsylvania -- one that will maintain nuclear energy's $2 billion annual contribution to the state's economy and its approximately 16,000 direct and indirect Pennsylvania jobs, Crane said.