FirstEnergy Nuclear Operating Co. on Tuesday filed paperwork with federal regulators as part of the process to shut down the Davis-Besse nuclear plant in northwest Ohio by 2020.

The company filed two license amendment requests with the Nuclear Regulatory Commission to prepare for the permanent removal of nuclear fuel from the reactor and reduced staffing at Davis-Besse once the plant closes.

FirstEnergy Nuclear Operating Co,, also known as FENOC, said it plans to shutter Davis-Besse, near Oak Harbor, by May 31, 2020, barring legislative support and what the company calls meaningful market reforms.

The planned shutdown of Davis-Besse and other FENOC nuclear plants are related to the Chapter 11 bankruptcy filing last year of FirstEnergy Solutions.