Ameren Illinois Solar, Net Metering & Rates

What homeowners should know

• Customer-owned renewable generation must complete the Ameren interconnection process before operation.
• For newer net-metering applications, excess generation can be credited to the supply section under the selected netting method.
• Delivery-service treatment differs from older grandfathered net-metering arrangements and can also change when certain rebates are accepted.
• Customers using an alternative retail electric supplier should verify whether that supplier supports the relevant net-metering treatment.

Important: Utility tariffs change. Confirm the current rate schedule, interconnection agreement and export-compensation rules for your exact account before signing a solar proposal.

Illinois electricity and solar context

The state electricity-rate figure is a statewide EIA benchmark, not the utility tariff on your bill. Utility plans can differ because of time-of-use periods, tiers, fixed charges, riders, supply choice and solar-export treatment.

Official Ameren Illinois solar sources

Home Solar Atlas summarizes homeowner-facing rules but treats the utility's current tariff and interconnection documents as the controlling source.

Before you compare installer quotes

• Use 12 months of actual electricity consumption rather than only your average bill.
• Ask the installer which utility rate plan and export-compensation schedule the savings model assumes.
• Separate self-consumed solar value from exported-energy value if the utility uses net billing.
• For time-of-use tariffs, compare when the home imports energy with when solar exports occur.
• Model battery economics separately instead of assuming every exported solar kWh has retail value.