Green Mountain Power (GMP) is an electric utility company serving the state of Vermont. The company was founded in 1997 and is headquartered in Colchester, Vermont. GMP provides electricity to over 265,000 customers in Vermont and is committed to providing clean, affordable, and reliable energy to its customers. The company has been recognized for its efforts to promote renewable energy and reduce its carbon footprint. GMP is a subsidiary of Avangrid, Inc., a diversified energy and utility company based in Orange, Connecticut.