Private Solar Credits

Customer-owned Generation

Ameren Missouri solar rebate funds are no longer available for new applicants. However, if you submitted an application in December 2013 and are in the rebate commitment queue, you will find detailed information below. 


The 2008 Proposition C Missouri Solar Rebate funds are fully subscribed to the $91.9 million funding level. There currently are no cash rebates for new Missouri Net Metering applications available through Ameren Missouri. Net Metering benefits remain available for all renewable generation of 100 kW or less.

  • The $0.50 per watt solar rebate is in effect as of July 1, 2016 through June 30, 2019. You are only eligible to receive the $0.50 per watt solar rebate if:


    • You received a rebate commitment letter from Ameren Missouri
    • Your solar installation is fully installed and completed within one year of the date on your solar rebate commitment letter

  • The deadline for submitting Completion Requirements paperwork to be eligible for the $1.00 per watt solar rebate was June 30, 2016 for customers whose applications were received by Ameren December 31, 2013, and were approved for installation and the solar rebate.


Rebate Queue Chart

Residential Meter Socket Change Information Recent


    
Completion Requirements (if eligible for rebate)
    
Net metering (effective 12/22/2013)
    

A customer who has received a solar rebate commitment letter is eligible for the $0.50 per watt solar rebate in effect as of July 1, 2016 through June 30, 2019 and must meet all installation and final documentation requirements listed below. To receive the rebate, these requirements must be completed within one year of the date on your solar rebate commitment letter. 


  1. The customer has completed the installation of all equipment, and
  2. The following items have been provided to Ameren Missouri:  
  • Section E has been completed and signed by a Licensed Missouri Electrician or Engineer
  • The "System Installation Date" of Section H is completed (if not eligible for rebate, this is not required)
  • Section F has been signed by the Ameren Missouri customer of record 
  • The local inspection authority having jurisdiction (AHJ) has approved the installation/wiring (if applicable) 
  • Copies of detailed receipts/invoices with purchase date circled (if not eligible for rebate, this is not required)
  • Photo(s) of completed system (if not eligible for rebate, this is not required)
  • Taxpayer Information Form must be completed and attached (if not eligible for rebate, this is not required)
   

PLEASE NOTE:  You have one year from the rebate commitment date (if applicable) or design approval date (if no rebate available) to install the PV system. The approved Missouri Net Metering application expires after 12 months. 

 
Failure to satisfy Completion Requirements within 12 months of rebate commitment will result in a solar rebate of $0.

   
When the customer has satisfactorily completed all installation and final documentation requirements, Ameren Missouri will install a bi-directional meter. If any deficiencies are found that prevent the bi-directional meter from being installed and those deficiencies are not corrected within one year of the solar rebate commitment letter, the customer's solar rebate may be denied.

The system becomes operational upon installation of the bi-directional meter and the solar rebate payment will be made within 30 days of that date.

   
   
Status of Solar Rebate Reservation Queue
     
At this time, Ameren Missouri's solar rebate program is fully subscribed to the $91.9 million funding level. Ameren Missouri does not anticipate making any additional funding available although solar rebate payments will not be suspended until the funding level has been fully paid.
   
A reservation and queue system for solar rebates has been established based on the order that applications were received. Find the latest information regarding the Solar Rebate Queue Status online.
   
Applications that have not received a written rebate commitment have been placed in the queue and may only receive a rebate commitment if rebate funds become available due to cancellation or expirations.
  
For more detail on the solar rebate and reservation and queue system, refer to Rider SR - Solar Rebate tariff.
  
 
Revising a Net Metering Application Eligible for Rebate
     
There may be times when a net metering application needs to be revised. Revisions might result from clarifications requested by Ameren Missouri during the approval process or as a result of unforeseen problems that occur either with procuring the equipment specified or with physical construction constraints. Net metering and solar rebate applications can be revised to reflect changes without causing the application to be rejected and the customer losing their Qualification Date except:
  
- The system capacity cannot exceed the maximum allowable sizing
- The application cannot be transferred to a different developer*             
   
In cases where the capacity of the solar system increases, the rebate will be determined based on the original system capacity that was submitted.

   
Any changes in the net metering design will need to be submitted to and approved by Ameren Missouri. 

*If Your Solar Installer Goes Out of Business or Releases Your Installation Agreement (applies only if you are eligible for rebate)
  • Provide Ameren Missouri Renewables with proof that the installer is no longer in business. Provide the contact information and details about the new installer handling your PV installation.
  • Provide Ameren Missouri Renewables with an email or letter from the previous PV installer releasing you from the installation agreement. Provide the contact information and details about the new installer handling your PV installation.





For customers who have a rebate commitment completing their installations:

The deadline for submitting the completion requirements to be eligible for the $1.50 per watt solar rebate is June 30, 2015.

The deadline for submitting the requirements to be eligible for the $2.00 per watt solar rebate was June 30, 2014.

For customers who have a rebate commitment completing their installations:

The deadline for submitting the completion requirements to be eligible for the $1.50 per watt solar rebate is June 30, 2015.

The deadline for submitting the requirements to be eligible for the $2.00 per watt solar rebate was June 30, 2014.

For customers who have a rebate commitment completing their installations:


  • The $0.50 per watt solar rebate is in effect as of July 1, 2016 through June 30, 2019. You are eligible to receive the $0.50 per watt solar rebate if:
    • You received a solar rebate commitment letter from Ameren Missouri
    • Your solar installation is fully installed and completed within one year of the date on your solar rebate commitment letter. 


  • The deadline for submitting the completion requirements to be eligible for the $1.00 per watt solar rebate was June 30, 2016.
    
At this time, Ameren Missouri's solar rebate program is fully subscribed to the $91.9 million funding level.
     
    
Ameren Missouri does not anticipate making any additional funding available although solar rebate payments will not be suspended until the funding level has been fully paid.
    
A reservation and queue system for solar rebates has been established based on the order that applications were received. Find the latest information regarding the Solar Rebate Queue Status online.
   
Applications that have not received a written rebate commitment have been placed in the queue and will only receive a rebate commitment if older applications expire or are canceled. 
   
   
Learn more about the Ameren Missouri Rebate Program:
   
Missouri Solar Rebate Tariff Information
Net Metering Complete Tariff
   Net Metering Application/Agreement Only
Taxpayer Information Form
Individual Customer Affidavit
Business Customer Affidavit

Your Solar System Size (Effective 2/15/2016)
   
Upon receipt of a completed solar Net Metering Application on an existing account, the maximum allowable nameplate capacity (system size in kW DC) is calculated based on your historical usage to determine if the solar nameplate capacity submitted in the application is equal to or less than the maximum allowable. If the submitted capacity is greater than your usage, we will contact and advise you as to the maximum allowable nameplate capacity. The application will then be on hold until a revised application and one-line have been received with a nameplate capacity within the maximum allowable capacity.
   
If a customer account has a single revenue meter, you can estimate your maximum allowable solar nameplate capacity as follows:

Most recent 12 billing month load kWh/(8,760 hrs. x 15.6% Capacity Factor) = Maximum Allowable Nameplate Capacity in kW DC
   
Example:
           Previous 12 month load = 13,512 kWh
    Hours in a year = 8,760 hours
    Solar Capacity Factor = 15.6% (based on DOE PV Watts) 
      
  Maximum Allowable Nameplate Capacity = 13,512/(8,760 x 0.156) = 9.887 kW
   
  Please note, this formula should be used only as an estimate. Upon receipt of a Net Metering Application, Ameren Missouri will evaluate the account and calculate the maximum based on the most recent 12 month usage. After Ameren sends the design approval notification, the customer has 1 (one) year to complete the installation and finalize the executed Net Metering Agreement. If the installation has not been completed during this period, Ameren requires recalculation of the maximum allowable nameplate.
 
In addition to the account maximum allowable nameplate capacity limit, to qualify for net metering, installation agreements cannot exceed 100 kW nameplate capacity.
   

 
For residential new construction, please contact Ameren Renewables with your new home’s square footage (living space only – minus garage and basement even if finished) to obtain your maximum solar nameplate capacity.
   

 
For commercial new construction, please complete the Commercial Load Sheet and send to Ameren Renewables to obtain your maximum solar nameplate capacity. 
   
 
If adding panels to an existing solar system, the solar system must still be within the maximum allowable nameplate capacity. 

Application Process for Your Solar Project
 
Ameren Missouri must review your renewable project before operation/installation to determine whether the renewable system could adversely affect the safety, reliability or quality of the local electric utility service. See the Ameren Service Manual for technical requirements reference. Also see recent Residential Meter Socket Change Information.

Please refer to Net Metering Application/Agreement when completing the application steps.

Click here to view the complete Net Metering Tariff (which includes prices for excess energy).

All Net Metering Applications submitted after August 28, 2013 MUST be on the current tariff application forms (bottom right hand corner of sheets No. 171.6, 171.9-171.12 and 171.14-171.15, date effective August 28, 2013).

Adding Additional Solar Panels  
If you are adding panels to your existing solar system, you need to complete the Missouri Net Metering application requirements again. Be sure to clearly label the existing equipment and the “new” equipment on the new one-line wiring diagram. Also include specification sheets for “new” equipment being added.
 
      
Application Requirements
    
Submit Sections A - D (Sheets No. 171.7-171.12). Checklist by section provided below:
      
Section
A. Customer-Generator's Information (complete all fields)
  This section is exclusively information about the Ameren Missouri customer.
  Please include email address (this is our primary way of communicating with you)*
  Company Account No., Name and Service Address fields must match the Ameren Missouri electric bill.
        
B. Customer-Generator's System Information (complete all fields)
     Generator should be sized to offset part or all of customer’s own electrical energy requirements (not larger than property’s electrical requirements)
  Components must be either UL or IEEE certified
  Specific location or inverter/interconnection equipment
  Required AC disconnect switch located within 10’ of the utility meter and is visible and accessible to Ameren Missouri personnel at all times. If AC disconnect is further than 10’, Ameren approval is required and if Ameren approves the exception specific location on weather-proof placard must be permanently affixed to the utility meter.
        
C. Installation Information/Hardware and Installation Compliance (complete all fields)
  Please include email address (this is our primary way of communicating with you)*
  Installer's signature required (Sheet No. 171.8)
        
D. Additional Terms and Conditions
  Customer's signature required (Sheet No. 171.12)
       
Submit one-line wiring diagram
  One-line wiring diagram (8 1/2" x 11" legible document required) should show wiring from renewable system to the utility service - Samples
  Indicate specific location of each component:
  Renewable system (solar or wind turbine)
  All disconnect switches (required AC disconnect switch located near the utility meter and is visible and accessible to Ameren Missouri personnel at all times) note on drawing specifically where this disconnect is located. Please be very specific. Must be within 10’ of the electric billing meter. If not, state specific reason why it is not for the review/approval process.
  Inverter(s)
  Main panel
  Bi-directional meter
  Incoming utility service
        
Submit specification sheets for each component
  Solar panel spec sheets or wind turbine specification sheets
  Inverter specification sheets
        

 
Ameren Missouri reviews net metering application system designs and replies to the customer within 30 days (10 kilowatt (kW) and below systems) or 90 days (11 kW - 100 kW systems). 


If the system design is approved, Ameren Missouri will email the customer and installer (if applicable) a design approval letter. After the letter is received, the customer can proceed with system installation. 


If more information is needed from the customer, Ameren Missouri contacts the customer via email, phone or U.S. mail to request the specific information. When this information is received, and if the information is completed for system design approval, the design approval letter should be received within 30 days of receipt or requested information via email.
 


 
apply now 
   
Mail original completed Sections A-D, one-line drawing for renewable system and specification sheets for inverter and solar panels or wind turbine to:
    Ameren Missouri
Renewables
1901 Chouteau Avenue
MC 1450
Saint Louis, MO 63103
 
 

Email
    Mhenry@ameren.com   
     
  *If your email address changes, please notify Ameren Missouri Renewables with the updated information. 
   

Completion Requirements for Your Solar Project
 

Complete these requirements after Sections A - D have been approved by Ameren Missouri and your system is installed.
   
Please refer to Net Metering Application/Agreement when completing the application steps.
   
   View the complete Net Metering Tariff (which includes prices for excess energy). 
   

All Net Metering Applications submitted after August 28, 2013 MUST be on the current tariff application forms (bottom right hand corner of sheets No. 171.6, 171.9-171.12 and 171.14-171.15, date effective August 28, 2013).    
   
   
Completion Requirements
  
Submit Sections E - F. Please write the account number on the top right corner of the page to prevent delays in processing. Checklist by section provided below:
   
Section
E. Electrical Inspection (Sheets No. 171.13)
This customer's generation system has been installed:
If a local Authority Having Jurisdiction (AHJ) exists, then the permit number needs to be included in Section E and the inspection certification forwarded to Ameren Missouri. 

NOTE: The AHJ is associated with the municipality and is not the Missouri licensed engineer or electrician. Not all municipalities have this requirement. However, if it is required, Ameren requires the approved inspection. The meter will not be installed until this document is received.

A Missouri licensed engineer or electrician inspects the system to ensure all requirements in Section C (Application Requirements) are satisfied. This step is required for all solar installations.

Licensed engineer or licensed Missouri electrician signature required.
  
F. Customer - Generator Acknowledgement (Sheets No. 171.13)
Customer signature required
  
Mail original completed Sections E - F to:
Ameren Missouri
Renewables
1901 Chouteau Avenue
MC 1450
Saint Louis, MO 63103
 
or
 
 
  E-mail 
Mhenry@ameren.com
     
     

Bi-Directional Meter
After receiving completed Sections E-F and the approved inspection certificate (if applicable), Ameren Missouri will schedule installation of a bi-directional meter. This typically takes 21 days or less from the date Ameren Missouri receives all required completion paperwork for the bi-directional meter to be installed. You will know the bi-directional meter has been installed when you see a red sticker that states “Warning Alternative Generation Source.” You may begin operating your generation system at that time.
      
A one-time charge for the bi-directional meter and any required work will appear on your Ameren Missouri bill by the next billing cycle. The charge is quoted in the design approval letter.
  
Your Ameren Missouri bill will reflect net metering from the day the bi-directional meter has been installed. 
  
A bi-directional meter only records billing data. It does not record the total amount of energy produced by the renewable system. Only kilowatt-hour (kWh) fed back to the grid and kWh delivered by Ameren Missouri will register on the bi-directional meter.
  
If the system is producing power and the property is using the power simultaneously, the bi-directional meter does not record the produced or used power - essentially they cancel each other out.
  
Optional monitoring systems are available to measure all energy produced by the generator. Talk with your installer for more information on this option.
  
     
G.

Application Approval (completed by Ameren only)
Once completed Sections A - F have been received by Ameren Missouri and the bi-directional meter has been installed, Ameren Missouri executes Section G.
      

IMPORTANT
If modifications to the current system are made at any time, it is your obligation (according to the net metering terms) to notify Ameren Missouri and update/re-file your net metering application/agreement.
  
IMPORTANT
If the name changes on the Ameren Missouri account (e.g., property sold, new tenant), the new customer will need to file a net metering application/agreement with Ameren Missouri in their name within 30 days. See Sheet No. 171.6 of the Missouri Net Metering Application for details.
  
If you have application questions, contact Ameren Missouri Renewables at 314.554.2649 or lcosgrove@ameren.com.

Applicable Meter for Your Solar Project

Bi-Directional Meter (7/1/2016)
    
The bi-directional meter relates directly to net metering and allows Ameren Missouri to record the amount of energy fed to Ameren Missouri's grid.

Typically, the one-time charge for the bi-directional meter is $321 for a 1-phase meter or $219 for a 3-phase meter. In some cases, more work is required than simply replacing the meter resulting in higher charges. Meter costs are subject to change. See recent Residential Meter Socket Change Information.

     

The cost of the bi-directional meter and any additional work required to support a net metering installation is quoted in the net metering application design approval letter/email that is sent to the customer and installer. The cost quoted will appear on your Ameren Missouri bill by the next billing cycle after the project is completed and the meter is installed.

   

You will know the bi-directional meter has been installed when you see a red sticker that states "Warning Alternative Generation Source" and Ameren Missouri sends you an email notification.  

   

A bi-directional meter only records billing data. It does not record the total amount of energy produced by the renewable system. Only kilowatt-hour (kWh) fed back to the grid and kWh delivered by Ameren Missouri will register on the bi-directional meter. If the system is producing power and the property is using the power simultaneously, the bi-directional meter does not record the produced and used power - essentially they cancel each other out.

    

Economics

When contemplating a solar installation for your home or business, consider the following during the planning process: 

   

  • Initial Cost 
    Research and obtain several bids regarding the design, engineering, equipment and installation costs for a system that you will need. 
  • Maintenance Cost 
    Consider the expenses related to the operation and maintenance of your system, including inspections, cleanings, insurance, etc.
  • Repair and Replacement Costs 
    Determine approximately how often you will need to repair or perhaps replace components of your solar energy system.
  • Cost of Producing Your Own Electricity 
    When performing a cost/benefit analysis, the cost of generating your own energy must be weighed against the cost of electricity provided by Ameren. Check the net-metering options and know the requirements before you begin your installation. 
       

For more on estimating the performance and energy offsets of a solar energy system, use the National Renewable Energy Laboratories (NREL) PV Watts calculator.



Working with Developers 

Installing a solar energy system for your home or business is a significant investment and modification to your existing electrical system. We recommend following a few simple steps for choosing and partnering with the best developer for your job. 

  • Choose a developer with a proven track record. Contact a professional association such as the Missouri Solar Energy Industries Association or the Illinois Solar Energy Association.
  • Make sure that your prospective contractors are licensed and bonded.
  • Ask for references from customers and contact the references to ask questions about their experience working with the installer.
  • Check out contractors with the Better Business Bureau.
  • Obtain several bids from various contractors and be sure to compare bids for variances such as whether a contractor will do all the work or hire subcontractors.
  • Ask about warranties and guarantees with your new solar energy system.


Selling Back Power 

If you are an Ameren Missouri customer who generates some or all of your energy, new metering allows you to send your excess generated energy to the Ameren grid. Learn more about customer-owned generation


Federal Tax Deduction 

You may be eligible for a federal tax deduction after installing a solar energy system. To learn more about this personal tax deduction for homeowners, visit the IRS website
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