Missouri Solar Interconnection: Net Metering and Easy Connection Act

RSMo 386.890, the 'Net Metering and Easy Connection Act,' requires all Missouri retail electric suppliers to offer net metering to customer-generators with solar systems up to one hundred kilowatts. For systems of ten kilowatts or less, the utility must accept a single all-in-one document combining the interconnection request, procedures, and terms. The customer's facility must carry metering equipment that measures the net energy produced or consumed. Equipment must meet the National Electrical Code, National Electrical Safety Code, IEEE, and UL standards, plus any local code authority. The Missouri Public Service Commission administers the program through rule 20 CSR 4240-20.065; local jurisdictions still issue the building and electrical permits.

A customer cannot back-feed the grid until the retail electric supplier approves the interconnection agreement. Systems that skip interconnection or fail the required NEC, NESC, IEEE, and UL safety standards can be denied connection or disconnected by the utility.