Exelon company Constellation is to provide 100% renewable electricity to furniture supplier Herman Miller's operations in Spring Lake, Michigan, under a four-year deal.

The power will come from the 59.4MW Harvest 2 wind farm in Elkton in the same US state.

Approximately 25,000 megawatt-hours of electricity a year will be delivered under the terms of the deal.

The Spring Lake campus is responsible for about one quarter of Herman Miller's global energy consumption.

It includes integrated steel manufacturing facilities that fabricate, powder coat and assemble numerous products, such as height adjustable tables, filing and storage systems and desks.

Constellation retail business president Mark Huston said: “Constellation is committed to the development of clean energy solutions that meet the needs of our customers, and our CORe offering is helping Herman Miller achieve its ambitious sustainability goals.

“Consumers are increasingly adopting offsite renewables, and we welcome Herman Miller to the growing list of organisations choosing carbon-free wind power to sustainably power their operations.”