All 58 utilities / MidAmerican Energy
MidAmerican Energy solar interconnection: what it requires before you energize
How does MidAmerican Energy detect unpermitted backfeed?
Being verified being verified
What happens if they catch you?
Being verified being verified
Small and DIY interconnection requirements
Process per their own pages: application, then a standard state interconnection agreement grants approval to proceed, then install, then Certificate of Completion plus your inverter settings. MidAmerican reviews the settings and runs a witness test, $125 fee in Iowa, then swaps the meter and the executed certificate is your permission to operate. documented
The date that splits everything: applications completed before Jan 1, 2025 sit on Rate NM, effectively retail-rate netting with credits carrying forward, no cash-out. Applications after that land on Rate NEM: inflow and outflow metered separately in real-time 15-minute increments, with outflow credited at the tariff's outflow rate, below retail. Size to self-consumption on the new rate. documented
Iowa systems can run up to 1 MW capped at 100% of your load, Illinois up to 2 MW, and third-party PPA systems are excluded from netting entirely. documented
Illinois territory note: MidAmerican IL is under the same CEJA supply-only regime as ComEd for post-2025 customers, so the same grandfathering caution applies before modifying an older system. documented
sources: MidAmerican customer interconnection · Iowa Utilities Commission distributed generation
How long does it actually take here?
Loading reported timelines…
Leave PTO empty if you're still waiting. Reports are anonymous and feed the median above.
Related: PG&E (CA)
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 58 utilities: see all of Gridrules.