Since 1959, NTUA has supplied electricity, water, natural gas, wastewater treatment, and photovoltaic (solar power) services to residents throughout the 27,000 square-mile Navajo Nation. NTUA serves approximately 39,400 electric customers, 36,600 water, 13,600 waste water customers, 7,900 natural gas customers, and 193 photovoltaic customers.
The tribal utility authority, an enterprise of the...