Rapid Customer Payback
The nearly maintenance-free HPS, with a 10- to 20-year life, has a rapid time to payback on a CAPEX basis.
Below we chart the payback period for a real-life case study for an 3kW cell tower in India. For the case study we examine an off-grid and a grid-tied HPS versus the existing energy system at the site.
The 3kW system realizes nearly $9,000 and $4,400 annual savings and pay back in under three years and six years for the off-grid and grid-tied systems, respectively.