LA CYGNE, Kan. (AP) — Westar Energy has requested a $152 million rate increase from the Kansas Corporation Commission to pay for environmental upgrades and repairs at the state’s only nuclear plant.

The Topeka Capital-Journal  reports that the commission will evaluate the request for the La Cygne plant over several months. The Citizen’s Utility Ratepayer’s Board, businesses and others can intervene to argue for a lower rate or disagree with how the company plans to distribute the funds.

About half the request would be used to bring the plant in line with federal emissions standards.

The company is responsible for about $600 million, and has already recovered about half of that money through previous rate increases.

John Bridson, senior vice president of generation and marketing at Westar, said that the upgrades were required by the Nuclear Regulatory Commission after a tsunami damaged the Fukushima nuclear plant in Japan in 2011.