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Qualifying Facilities

If a customer either chooses not to apply for net metering or their system is above 100 kW, they will need to apply for an agreement called a Qualifying Facilities agreement. This agreement requires the customer to make one of the following choices. 

1. No excess energy will be purchased by Ameren Missouri. The metering equipment necessary to measure the energy from the customer to Ameren Missouri will not be installed. Any energy delivered from the customer to Ameren Missouri will not be measured and the customer will not be compensated for this energy.

2. Excess energy purchases by Ameren Missouri- Metering equipment to measure the delivery of energy from Customer to Company will be installed. Any energy delivered by Customer to Company will be purchased by Company in accordance with Company’s Electric Power Purchases From Qualifying Facilities tariff, and Customer will be assessed the monthly Customer Charge specified in Section 1.c. (in addition to the Customer Charge applicable under Company’s standard rates for retail electric service).  Energy purchased by Company will be at the rates specified in Section 1.a. Non-Time-Differentiated rate unless the Customer has elected to purchase energy under one of Company’s Time-of-Day rates in which case the energy purchased by Company will be at the rates specified in Section 1.b. Time-Differentiated rate.

You will still need to provide a one line diagram and spec sheets for the inverter and the solar panels with the application. The application will still be reviewed by our engineering staff. There is no set time for approving this agreement.  

Qualifying Facilities Application

Qualifying Facilities Tariff (PDF)

 

What's the difference between a Qualifying Facility and Net Metering?

NET METERING QUALIFYING FACILITY (QF)
Maximum System Size Maximum size for net metering for residential or commercial installations is 100 kW or enough to offset the full load of the facility. Maximum size for a Qualifying Facility is 1,000 kW. For larger systems please contact us directly at solar@ameren.com
Online Application Yes Yes for systems up to 1,000 kW. For larger systems please contact us directly at solar@ameren.com
Billing The customer is billed monthly for the net difference in what they received from Ameren Missouri and what they delivered to Ameren Missouri. If more is delivered than received the customer will receive a credit on their enegy statement.

The customer chooses one of the following.

  • No excess energy will be purchased and no metering equipment will be installed. Any energy delivered to Ameren Missouri will not be measured and the customer will not be compensated for this energy.
  • A bi-directional meter is installed and any energy delivered by the customer to Ameren Missouri will be purchased at the tariff rate. *No netting occurs under a QF agreement. Any energy that flows to Ameren Missouri is purchased by Ameren Missouri. Learn more (PDF) about the QF tariff.
Bi-directional Meter There is a one-time charge on the customer's energy statement. If the customer has chosen sales of excess production to Ameren Missouri, a bi-directional meter charge is billed monthly on the energy statement.
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