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What This Calculator Measures
Three metrics that determine if solar makes sense for your business
Annual Savings
Cut your energy costs by 40-70% using real utility rates from SCE, PG&E, SDG&E, and LADWP.
Payback Period
Most California businesses see full ROI in 3-5 years with federal ITC and state incentives.
10-Year ROI
Total return including energy savings, incentives, and protection from rate increases.
Based on 100+ commercial solar installations across California
Real Businesses, Real Savings
California businesses trust Promise Energy for proven solar solutions
Los Angeles Convention Center
Los Angeles, CA
- •Annual savings exceeding $450,000
- •3.5 year payback period
- •1,500 tons of CO₂ reduced annually
"The solar installation has exceeded our expectations in both performance and savings. Promise Energy delivered a world-class system that positions us as a leader in sustainable event venues."
Ability Tri-Modal
Carson, CA
- •Innovative strap racking system
- •Over 830,000 lbs of CO₂ reduced lifetime
- •Turnkey installation completed on schedule
Silver Star Apartments
Los Angeles, CA
- •LEED Platinum certification achieved
- •26 solar water heating collectors
- •USGBC LA Project of the Year winner
Join 100+ California businesses saving millions with solar
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