The Building Energy Efficiency Standards (Energy Code) include requirements for solar photovoltaic (PV) systems, solar-ready design, battery energy storage systems (BESS), and BESS-ready infrastructure. A solar PV system is prescriptively required for all newly constructed.
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IEC 62548:2016 sets out design requirements for photovoltaic (PV) arrays including DC array wiring, electrical protection devices, switching and earthing provisions.
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This comprehensive guide covers everything you need to know about California's solar mandate in 2025, including updated requirements, costs, exemptions, and compliance strategies for homeowners, builders, and contractors. What is the California Solar Panel Mandate?.
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Core requirements include rack separation limits, a Hazard Mitigation Analysis to prevent thermal-runaway cascades, early-acting fire suppression and gas detection, stored-energy caps for occupied buildings, and detailed safety documentation (UL).
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