Utility interconnection requirements, in one place.
One page per utility — requirements, fee structure, timelines, common deficiency causes, and a change log. Free forever. This wiki is how SunDocket proves per-utility depth.
SD-01 · Utility pages
13 UTILITIES · UPDATED 2026-08-19PG&E
California · Rule 21
Rule 21 pathways, the Your Projects portal, packet contents, fee structure, and review stages.
Sample previewAPS
Arizona
ACC interconnection rule levels, the PowerClerk packet, PE-stamp rules, and review stages.
Sample previewCon Edison
New York · SIR
NY SIR tracks, screening and CESIR stages, published fees, and the application package checklist.
Sample previewSCE
California · Rule 21
Rule 21 pathways, the PowerClerk and GIPT portals, Solar Billing Plan handling, fees, and timelines.
Sample previewSDG&E
California · Rule 21
Rule 21 pathways, the DIIS portal, Solar Billing Plan handling, fee structure, and published timelines.
Sample previewSRP
Arizona · SRP Handbook (non-ACC)
SRP’s own Handbook (not the ACC rules), PowerClerk, DER classes I–IV, and the clearance path.
Sample previewTEP
Arizona · ACC DGIR
ACC DGIR levels, TEP’s Interconnection Manual, the PowerClerk portal, and the RCP export-rate lock.
Sample previewNV Energy
Nevada · AB 405 / NMR-405
The PowerClerk portal, NMR-405 Tier 4 rates, two 10-business-day review windows, and the PTO inspection.
Sample previewXcel
Colorado · Minnesota
Colorado’s DER portal and 200% Rule, Minnesota’s MN DIP tracks, fees, and stage timelines.
Sample previewDuke
Carolinas & Florida
NCIP and Fast Track pathways, Solar Choice riders, and Florida’s tier system across NC, SC, and FL.
Sample previewFPL
Florida · Rule 25-6.065
Rule 25-6.065 tiers, size pre-approval before install, insurance proof, and the PTO meter step.
Sample previewNational Grid
New York + Massachusetts
NYS SIR pathways upstate, the nCAP portal, and the Massachusetts DPU DG tariff — fees, clocks, packets.
Sample previewEversource
Massachusetts + Connecticut
PowerClerk filings in two regimes — Massachusetts DPU DG paths and Connecticut’s Fast Track tracks.
SD-02 · Beyond the first wave
RANKED BY REQUESTSFiling somewhere else?
The first-wave thirteen are live — but they are not the whole country, and most US utilities are not here yet. Coverage is planned to reach 25 utilities by month four, and what comes next is decided by what design partners file and what gets requested here.
Tell us which utility you file with — whatever state you're in. Requests are how we rank the queue.
Request your utility
Requests rank the encoding queue — whatever state you file in. Email and volume are optional; they help us weigh the request (privacy note).
SD-03 · Method
REV 2026-08-12Each page is compiled from the utility's own published requirements — tariffs, interconnection manuals, application guides, and the state rules behind them. Every page shows its sources and keeps a change log, because requirements drift and an undated claim is a liability.
Where a fee amount or form revision may have moved since our last review, the page states the structure and flags the number instead of asserting it. Always verify against the utility's current published documents before filing.
Cross-cutting pages: fees by utility · California · Arizona · New York · Rule 21 vs the NY SIR · glossary. Follow every page’s change log by feed: RSS / JSON.