Calculators

How to Calculate Solar Cost

• Step 1: Look at your past electricity bills to average out your annual electricity usage. Look for the “kWh” and figure out your average yearly usage.
• Step 2: Choose the calculator for your electricity provider (Utility).Non-CA or FL Residents:
  1. First calculate solar system size
  2. Then calculate solar cost

  California Resident:

  • Southern California Edison (SCE)
  • Pacific Gas and Electric (PG&E)
  • San Diego G&E (SDG&E)
  • Los Angeles Dept of WP (LADWP)
  • Burbank Water and Power
  • Glendale WP
  • Pasadena WP

  Florida Resident:

  • Florida Solar Calculator
  • Gainesville Regional Utilities (GRU)
• Step 3: Enter “Your kWh/year” and calculate!

How to Design Your Own Solar System

• Step 1: Calculate your Solar Array Size.
• Step 2: Determine the Number of Panels you’ll need.
• Step 3: Choose the Inverter Size!
• Step 4: Figure out the array String-Size!

Disclaimer: Our solar calculators estimate the solar cost and size of a solar project. These should only be used as rough estimates, and may be incomplete. A solar installer would be able to provide you with a more accurate estimate.