US-based TransAlta Corporation and the Washington state Department of Ecology have signed an agreement to reduce greenhouse gas emissions from the Centralia coal-fired plant and provide replacement capacity by 2025.

The memorandum of understanding (MOU) is designed to reduce emissions from the 1,375MW plant.

TransAlta said it has invested over $300m in pollution controls and securing significant reductions in emissions.

The MOU follows Govenor Gregoire’s 2009 Executive Order on Climate Change.