The Imperial Irrigation District (IID) is a public agency that provides irrigation and electrical services to the Imperial Valley in Southern California. The IID was formed in 1911 and is governed by a five-member board of directors. The district serves over 150,000 customers and covers an area of approximately 1,400 square miles. The IID is responsible for the management of the Colorado River, which provides water to the Imperial Valley and other parts of Southern California. The district also operates a large-scale solar power plant and is committed to promoting renewable energy sources.