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Potomac Edison solar interconnection: what it requires before you energize
How does Potomac Edison detect unpermitted backfeed?
FirstEnergy's own warning: depending on your existing meter, exports can register as consumption and you get billed for what you generate documented
What happens if they catch you?
Being verified being verified
Small and DIY interconnection requirements
Portal-only since June 2025, emailed and faxed applications are no longer accepted, and there's now an application fee paid at submission. UL1741-SB inverters need the utility's settings file installed, same FirstEnergy quirk as JCP&L. documented
No energizing before electrical inspection and a signed Certificate of Completion. The bidirectional meter swap after approval can take weeks, and exports earn nothing until it's in. documented
MD side: 1:1 net metering with a choice, the default is an annual April payout at the commodity rate, you must opt in to bank credits at retail instead. Limited-export agreements are a documented option in MD. documented
WV panhandle side: residential cap 25 kW, and after the 2024 rate case new customers get a 9.34c/kWh credit rate instead of 1:1, existing customers grandfathered. documented
sources: Potomac Edison MD interconnection · Potomac Edison / Mon Power WV interconnection
Related: BGE (MD) · Con Edison (NY (NYC / Westchester))
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 53 utilities: see all of Gridrules.