Commercial Solar Calculator for California Businesses

Get an instant, accurate quote for your commercial solar installation in just 60 seconds. No obligations, no sales calls - just real numbers based on your location and energy usage.

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Why Use Our Solar Calculator?

Real-Time Utility Rates

We use actual commercial rates from SCE, PG&E, SDG&E, and LADWP updated daily

All Incentives Included

Federal ITC, SGIP rebates, utility programs, and local incentives automatically applied

Accurate Projections

25-year financial modeling with degradation, utility escalation, and maintenance costs

How Our Calculator Works

1

Enter Your Location

We use your address to determine solar radiation levels, local utility rates, and available incentives specific to your area.

2

Input Energy Usage

Provide your monthly electricity bill or annual kWh usage. We'll calculate the optimal system size to offset your consumption.

3

Specify Roof Details

Tell us about your roof type and available space. Our calculator accounts for shading, orientation, and tilt for accurate production estimates.

4

Get Instant Results

Receive detailed analysis including system size, costs, savings, ROI, payback period, and 25-year financial projections.

Our Calculation Methodology

What We Calculate

  • Optimal system size based on usage and roof space
  • Total installation costs with current market pricing
  • All available incentives and tax credits
  • Monthly and annual energy savings
  • Payback period and return on investment
  • 25-year cumulative savings and cash flow

Factors We Consider

  • Local solar radiation and weather patterns
  • Time-of-use rates and demand charges
  • Panel degradation (0.5% annually)
  • Utility rate escalation (3-5% annually)
  • System maintenance and monitoring costs
  • Financing options and interest rates

Frequently Asked Questions

How accurate is the solar calculator?

Our calculator uses real-time utility rates, actual solar radiation data for your location, and includes all current federal, state, and local incentives to provide accuracy within 5-10% of actual quotes.

What information do I need to use the calculator?

You'll need your business address, approximate monthly electricity bill, and roof square footage. The calculator can estimate other values if you don't have exact numbers.

Does the calculator include all incentives?

Yes, our calculator automatically includes the 30% federal ITC, California SGIP rebates, utility incentives, and local programs specific to your location.

Is the calculator really free?

Yes, the calculator is 100% free with no obligations. You won't receive sales calls unless you specifically request a consultation.

How do you calculate ROI and payback period?

We calculate ROI based on total system cost after incentives, annual energy savings, and system lifespan. Payback period is when cumulative savings equal your net investment.

Can I save my calculation results?

Yes, your results will be displayed on screen and you can request to have them emailed to you for future reference.

Does the calculator work for all business types?

Yes, our calculator works for all commercial properties including offices, warehouses, retail, manufacturing, healthcare, and more.

How often is the calculator data updated?

We update utility rates daily, incentive programs weekly, and equipment costs monthly to ensure accuracy.

Ready to Calculate Your Solar Savings?

Join hundreds of California businesses that have used our calculator to go solar

No credit card required • No sales calls • 100% free