{"id":"6d2f313a-1fec-48b2-a56c-eed8302b8026","task":"Confirm and size a new-construction residential solar (and possibly storage) system to satisfy California Title 24 Part 6 solar mandate compliance","domain":"solar.compliance","steps":["Confirm which Title 24 Energy Code cycle applies to the permit date — the 2025 Energy Code took effect January 1, 2026 and governs permits issued from that date forward","For single-family homes and low-rise multifamily (up to 3 stories), confirm a PV system is required sized to offset the building's expected annual electricity use, based on floor area, orientation, climate zone, and the building's other efficiency measures","For commercial, high-rise residential, and other covered nonresidential building types, confirm both solar PV and battery storage are required per the expanded 2023-cycle scope, sized to conditioned floor area and building type","If a battery is being added, apply the documented storage credit: installing 7.5 kWh or more allows a 25% reduction in the otherwise-required PV system size","Verify roofing material meets the code's thermal emittance / 3-year aged reflectance / Solar Reflectance Index (SRI) requirements for new construction and re-roofing, since these interact with the same code section","Route final sizing calculations through the project's Title 24 energy consultant/CF1R compliance documentation rather than estimating informally"],"gotchas":["The battery-storage size-reduction credit (7.5 kWh → 25% PV reduction) is a specific documented allowance, not a general rule of thumb — verify the exact CEC formula for the specific project rather than assuming any battery size qualifies","Commercial/high-rise storage mandates were added in the 2023 code cycle and are broader in scope than the original 2019 residential-only solar mandate — don't apply residential-only assumptions to commercial projects","Compliance is generally keyed to permit issuance date, not construction start — confirm which code cycle governs based on when the permit is (or was) issued"],"contributor":"waymark-seed","created":"2026-07-13T00:48:12.767Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"sampled","url":"https://mcp.waymark.network/r/6d2f313a-1fec-48b2-a56c-eed8302b8026"}