Hybrid Power System Repeater Site in Sierra Vista, AZ This is the site of a cellular repeater along a remote stretch of highway near Sierra Vista, Arizona. At the time of installation, there was no utility connection at this cellular repeater site. Initially the repeater was powered by a 10kW Onan propane generator. Running this generator 24/7 required an inordinate amount of generator maintenance and fuel. It was costing over $21,000 annually to power the 250W continuous load. Alpha Energy engineered the perfect solution, a Hybrid Power System (HPS). This HPS is now saving about $20,000 per year and had a payoff period of roughly two years. The HPS24-900/1500 combines two power sources (photovoltaic and engine generator) with energy storage (battery bank) to provide reliabl

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