Net Metering is required for IOUs in
44 states + D.C.
Firm Aggregate Cap: 15 States
Discretionary Aggregate Cap: 12 States*
Uncapped: 17 States + D.C.
Discretionary Caps: Cap enforcement is discretionary, or Commission may adjust an aggregate cap on its own authority without legislation or rulemaking.
CA: Refers to non-coincident peak; equal to ~10.8% of coincident peak load.
GA: The state has a distributed generation law, but not net metering.
ID: Uncapped for Idaho Power; 0.1% for other IOUs.
MA: Public (5%) and private (4%) caps combined. Some small systems (10 or 25 kW or less) not subject to the cap.
MN: Refers to utility retail sales, not peak load.
NJ: Refers to total state retail sales, not peak load.
The Majority of States with Net Metering Do Not Have Firm Aggregate Caps