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Changelog — Plug-In Solar Legality Tracker
Dated history of changes to our 50-state plug-in solar legality tracker and its open dataset — state law signings and data updates, newest first.
Tracker last verified: July 2, 2026. L = law / legislative event · D = dataset / site update.
2026
- July 2, 2026 — L Correction: Vermont S.202 was signed by Gov. Phil Scott on June 16, 2026 (Governor’s office) — our June 22 entry listed it as passed/awaiting, which was already out of date. Vermont is the 7th state to sign; plug-in provisions (1,200W per meter) effective July 1, 2026. Signed-into-law count now 7 (CO, ME, MD, UT, VA, CT, VT). Re-verified same day: NH SB 540 still enrolled/awaiting (LegiScan), NY SUNNY Act still awaiting Gov. Hochul.
- June 22, 2026 — L Correction: New Hampshire SB 540 is enrolled/awaiting the Governor (LegiScan), not signed — status updated signed→awaiting; signed-into-law count corrected to 6 (CO, ME, MD, UT, VA, CT). Vermont S.202 added as passed/awaiting. (Corrected July 2, 2026: S.202 had in fact been signed on June 16 — see the July 2 entry.)
- June 21, 2026 — L New York SUNNY Act (A.9111C / S.8512C) re-verified — still passed both chambers and awaiting Gov. Hochul's signature; if signed, NY becomes the 7th U.S. state (6 have signed to date).
- June 15, 2026 — D Tracker review: signed-state list and labels checked; New Hampshire (SB 540) page published; Connecticut confirmed as a signed state. (Count later corrected June 22, 2026 — New Hampshire was enrolled/awaiting, not signed; the signed total is 6. See top.)
- June 14, 2026 — D Published the structured 50-state dataset (plug-in-solar-laws.json), per-state JSON files, the developer docs and a Dataset schema; added per-state review dates.
- June 4, 2026 — L Connecticut signed HB 5340 (omnibus solar bill) — 6th U.S. state; plug-in / balcony solar provisions effective Oct 1, 2026 (1,200W cap).
- May 29, 2026 — L New York SUNNY Act (A.9111C / S.8512C) passed both legislative chambers; awaiting Gov. Hochul's signature.
- May 28, 2026 — L New Hampshire SB 540 was originally logged here as enacted — corrected June 22, 2026: this was inaccurate. SB 540 was enrolled June 17, 2026 and is awaiting Gov. Ayotte; it has not been enacted. 1,200W cap; would take effect ~July 27, 2026 if signed. See the June 22 entry.
- May 12, 2026 — L Maryland signed HB 1532 (Utility RELIEF Act); emergency clause = effective immediately on signing; 1,200W cap.
- May 7, 2026 — L Colorado signed HB26-1007 — highest U.S. cap at 1,920W; effective Jan 1, 2027.
- April 22, 2026 — L Virginia signed HB 395 / SB 250; effective July 1, 2026; localities cannot ban balcony solar within the cap.
- April 6, 2026 — L Maine signed LD 1730; effective July 15, 2026 (up to 420W self-install, up to 1,200W with a licensed electrician).
2025
- March 2025 — L Utah signed HB 340 — the first U.S. state to fully legalize plug-in solar; effective May 7, 2025 (treated as appliances, no interconnection agreement within the cap).
Each legislative entry is sourced on the matching state page and mirrored in the open dataset. Informational, not legal advice — always confirm current rules with your utility and state authority.