2020 CEC Solar Efficiency Standards
California PV System Size Calculator

Calculate PV Solar System Sizing for California New Dwelling Energy Compliance

Quickly estimate size & browse solar power systems for new dwelling energy efficiency requirements by climate zone (includes battery storage option).

  • Select appropriate climate zone (unsure? check zip code )
  • Enter total square footage of conditioned floor area
  • Enter number of units for new dwelling (ex: “1”=single family home, “2”=duplex, etc)
  • Results are auto-calculated with compatible systems ready to view

Energy efficiency standards go into effect in California (CA) on January 1, 2020 by the California Energy Commission (CEC) & enforced by the California Building Standards Commission (CBSC) - read new CA solar efficiency standards.

Below, learn how you can actually profit from California's solar mandate!

Unbound Solar California New Home Construction Calculator

This calculator provides a basic estimate for research and initial planning purposes only.

Minimum System Size:

System Size:kW

Minimum System Size With Storage:

System Size with Storage:kW

Minimum battery storage capacity is 7.5 kWh per dwelling.

Questions? Chat with us!

Wil has been a part of the solar industry for over 20 years; as an electrician, solar installer, support technician, and more. He's also been living off-grid since 1996. Wil and the rest of the Unbound Solar team are here to answer any questions you have about designing a system that will fit your needs.

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