Solar PV
Solar arrays live in NEC Article 690, the roof access rules of the fire code, and the structural chapters. Most state laws that reach solar are tariffs and interconnection rules.
How a product team uses this page
- Check the NEC edition for 690 and rapid shutdown, then the fire and residential codes.
- Read the laws list for interconnection rules and tariffs that reach solar.
- Watch the changes table for NEC edition moves and tariff dockets.
Codes that reach solar PV systems
The code, the part of it that governs the product, and the editions in force across the map. Section numbers move between editions, so the hub page names the one each state enforces.
| Code | Where it reaches the product | Editions in force |
|---|---|---|
| NEC | Article 690, solar photovoltaic systems, with 705 for the interconnection and 690.12 for rapid shutdown | |
| IRC | Section R324, solar energy systems | |
| IBC | Rooftop structures and the structural load of the array | |
| IFC | Chapter 12, section 1205, solar photovoltaic power systems and roof access |
Laws that name solar PV systems
65 laws, rules, orders, and bills in 10 states: 46 in force or enacted, 6 pending, 13 that did not pass.
The laws below were tagged by keyword from the battery law summaries in ten states. A research pass for solar PV systems in every state is planned.
- A law or rule in force10
- Nothing on file39
| State | In force | Pending | Did not pass | Topics | Last moved | |
|---|---|---|---|---|---|---|
| ArizonaAZ | 5 | – | 2 | End of life, Fire and siting, Interconnection, Licensing, Meter adapters, Permitting, Tariffs | Sep 12, 2026 | The list |
| CaliforniaCA | 9 | 1 | – | End of life, Incentives, Interconnection, Licensing, Meter adapters, Permitting, Tariffs | Feb 19, 2026 | The list |
| FloridaFL | 6 | – | 2 | End of life, Fire and siting, Incentives, Permitting | Jul 1, 2026 | The list |
| MassachusettsMA | 8 | 2 | 3 | End of life, Fire and siting, Incentives, Interconnection, Licensing, Permitting, Tariffs | Sep 11, 2026 | The list |
| New YorkNY | 1 | 3 | – | End of life, Incentives, Licensing, Permitting | May 28, 2026 | The list |
| OregonOR | 5 | – | 1 | Fire and siting, Incentives, Interconnection, Licensing, Permitting | Oct 1, 2026 | The list |
| PennsylvaniaPA | 2 | – | – | Incentives, Interconnection | Jan 3, 2026 | The list |
| TexasTX | 4 | – | 5 | End of life, Fire and siting, Incentives, Interconnection, Licensing, Permitting | Oct 1, 2026 | The list |
| WashingtonWA | 4 | – | – | Fire and siting, Incentives, Licensing, Permitting | Jan 1, 2028 | The list |
| WisconsinWI | 2 | – | – | End of life, Fire and siting, Permitting | Oct 1, 2025 | The list |
What changes next for solar PV systems
20 changes ahead: code moves that reach the product and laws not yet in force, soonest first.
| Date | State | What moves | Products | Stage | Checked |
|---|---|---|---|---|---|
| Florida | CodeFlorida moves six codes to new editionsNEC 2023, IBC 2024, IRC 2024, IFC (edition not named), IECC residential 2024, IECC commercial 2024NECIBCIRCIFCIECC Res.IECC Com. | All products | Proposed | Partial | |
| Washington | CodeWashington moves to the 2026 NECNEC 2026. Adoption order filed Nov 18, 2025 (rule order effective Dec 19, 2025) with a delayed 2026 NEC effective date; the 2023 NEC stays in force until then.NEC | All products | Adopted, not yet in force | Partial | |
| Alabama | CodeAlabama moves two codes to new editionsIRC (edition not named), IECC residential (edition not named)IRCIECC Res. | Residential ESSSolar PVInvertersInterconnect devicesEV charging | In development | Partial | |
| Georgia | CodeGeorgia changes its 2024 IBC rulesIBC 2024. Not a new IBC edition, only new Georgia amendments to the 2024 IBC.IBC | Commercial and utility ESSSolar PVEV charging | Proposed | Partial | |
| Louisiana | CodeLouisiana moves five codes to new editionsNEC 2023, IBC 2024, IRC 2024, IECC residential 2024, IECC commercial 2024NECIBCIRCIECC Res.IECC Com. | All products | Proposed | Partial | |
| South Carolina | CodeSouth Carolina moves four codes to new editionsNEC 2023, IBC 2024, IRC 2024, IFC 2024. Implementation date for local jurisdictions.NECIBCIRCIFC | All products | Adopted, not yet in force | Partial | |
| Washington | CodeWashington moves five codes to new editionsIBC 2024, IRC 2024, IFC 2024, IECC residential 2024, IECC commercial 2024IBCIRCIFCIECC Res.IECC Com. | Residential ESSCommercial and utility ESSSolar PVInvertersInterconnect devicesEV charging | Proposed | Partial | |
| New Hampshire | CodeNew Hampshire moves to the 2024 IFCIFC 2024. Changes administration and enforcement of the state fire code; does not name a new NFPA edition.IFC | Residential ESSCommercial and utility ESSSolar PV | Adopted, not yet in force | Partial | |
| Washington | LawE3SHB 1960Replaces property tax on solar, wind, and battery storage facilities of 10 MW or more with state and local excise taxes from 2028. Funds local investment distributions and requires a model siting ordinance; counties seeking those funds may not adopt stricter siting standards. app.leg.wa.gov (opens in a new tab) | Commercial and utility ESSSolar PV | Enacted, not yet in force | Partial | |
| Idaho | CodeIdaho moves four codes to new editionsIBC 2024, IRC 2024, IECC residential 2024, IECC commercial 2024. The Board’s 2026 rule to adopt the 2024 editions did not pass the House; the Board is discussing draft legislation that would adopt the 2024 codes in statute, effective Jul 1, 2028, if passed.IBCIRCIECC Res.IECC Com. | Residential ESSCommercial and utility ESSSolar PVInvertersInterconnect devicesEV charging | In development | Partial |
All 20 changes ahead for solar PV systems
For information only. Your local building or fire official decides which code applies. We check state records often but can miss a recent change, so confirm with your official before you design, permit, or install. Terms of use