sentences:  On average, it has since generated 32 gigawatt-hours of electricity annually and supplied more than 25% of the power used at the base.Occupying of land leased from the Air Force at the northeastern corner of the base, this ground-mounted solar system employs an advanced sun tracking system, designed and deployed by SunPower.The system contains approximately 70,000 solar panels, and the peak power generation capacity of the plant is approximately 13 MWAC.