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WE Energies solar interconnection: what it requires before you energize
How does WE Energies detect unpermitted backfeed?
Being verified being verified
What happens if they catch you?
Being verified being verified
Small and DIY interconnection requirements
Wisconsin's statewide PSC 119 rules with state-approved forms. Application and approval before energizing, then commissioning testing: pass to get permission to operate, fail and there's a recommissioning fee. documented
Their manual is picky: one-line diagrams and site plans must be computer generated, hand-drawn is explicitly not accepted, and disconnects must lock in the open position, mounted 30 to 72 inches above grade. documented
Retail-rate credit for small systems, but monthly net excess is paid at the buy-back rate around 4.2c/kWh, so oversizing sells your surplus cheap. Typical timeline 30 to 60 days under 20 kW, up to 6 months if a transformer upgrade is needed. documented
Fresh change: a solar disconnect waiver for energy storage systems took effect June 1, 2025. documented
sources: We Energies COG manual (PDF) · Wisconsin PSC customer-owned generation
Verify your export before WE Energies does
WE Energies nets your exports, but the meter still logs every reverse-flow interval, including ones you didn't plan. Worth knowing your real number before they do.
Clamp meter on the grid input · energy monitor on the export register
Building battery-first or zero-export anyway? Craftstrom · EZ-1 · EG4
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Related: Alliant Energy (WPL) (WI) · Potomac Edison (MD / WV)
Planning a zero-export or plug-in setup here? See the zero-export reality check and equipment notes.
Every claim above is evidence-graded: documented means it traces to the tariff or the utility's own filings, reported means a dated community report. The full table covers 60 utilities: see all of Gridrules.