Nov 25, 2022

What You Should Know about the PV and Storage Changes in the 2022 California Energy Code?

What You Should Know about the PV and Storage Changes in the 2022 California Energy Code?

By POMCube | Nov 25, 2022 | Pageviews:52
When the electricity consumption is greater than the energy generated, the missing part of the energy will come from the battery storage, so the energy stored in the battery will drop.

The California Energy Commission (CEC) updates the Energy Code every three years. On August 11, 2021, the CEC, with support from CALSSA, approved the 2022 California Energy Code, which sets the building standards for new construction. While the approved code included incentives for electrification and solar hot water, requirements for single-family homes to be “battery-ready,” and tightened energy efficiency standards, the landmark feature of the new code is the requirement for new commercial buildings to include PV and energy storage.

When will the requirement go into effect?

New buildings permitted on or after January 1, 2023 will need to comply with the commercial PV and energy storage requirement.


What buildings are covered?

The commercial PV and energy storage mandate pertains to grocery stores, offices, banks, retailstores, schools, warehouses, auditoriums, convention centers, hotels, motels, doctors’ offices, medical clinics, restaurants, theaters, and high-rise (i.e., four stories or higher) multifamily apartments and condominiums.


Are there exemptions to the PV requirement?

The standards allow smaller systems on buildings without sufficient available roof space.

“Available roof space” is the unshaded portion atop all newly constructed structures, including the main building, carports, and covered parking areas that is not designated as “occupied roof space” (e.g., rooftop patios) per section 503.1.4 of the California Building Code.


No PV system is required in the following circumstances:

– The roof area does not have 80 contiguous square feet of space.

– The PV system size would be less than 4 kW.

– The building department has determined the modules cannot handle the snow loads according to ASCE 7-16, chapter 7.

– The building is multitenant in a utility service territory that does not offer Virtual Net Energy Metering (VNEM) or a community solar program.


For multi-tenant buildings, the energy storage requirements are based on the cumulative floor area of the tenant spaces larger than 5,000 square feet. The Energy Commission believes the energy storage systems will reduce exports to 10 percent. The standards allow energy storage systems larger than the minimum requirement. Buildings designed with the Energy Commission’s performance software should have energy storage system requirements that closely match the formulas above.


Are there exemptions to the energy storage?

No energy storage system is required in the following circumstances:

– The conditioned floor area of the building is less than 5,000 square feet.

– Exemptions have reduced the PV system size to less than 15 percent of the requirement in the PV formula.

– The capacity of the energy storage system would be less than 10 kWh.

– The building is an office, school, or warehouses in climate zone 1.

Additionally, the Energy Code allows buildings to comply with the storage requirements with energy efficiency features, though the Commission expects most buildings to comply by installing energy storage.


To read the full article in: 2022 Building Energy Efficiency Standards

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