The Los Angeles Department of Water and Power, also known as LADWP, is one of the largest municipal utilities in the United States. It serves the water and electricity needs of the City of Los Angeles. Established in 1902, the department supplies water and electricity to more than 3.5 million residents and businesses in Los Angeles. The Los Angeles Department of Water and Power serves over 640,000 water customers and nearly 1.4 million electric customers. It provides new installation, transfer and online bill payment services. The department offers consumer rebate and low-income refrigerator exchange programs. The Los Angeles Department of Water and Power operates an economic development group that encourages the expansion and retention of small- and medium-sized businesses. The department maintains a staff of more than 8,700 employees.