Click to sign up for Pure Power now. 
How Does Pure Power Work? 
When you enroll in Pure Power, Ameren Missouri purchases Renewable Energy Certificates (RECs) equal to your Pure Power participation level. The purchase of RECs supports wind and other renewable resources right here in the Midwest.

  • 100% Pure: You can sign up for Pure Power for an additional penny per kilowatthour (kWh) on your monthly bill. For the average residential customer who uses 1,000 kWh per month, the monthly cost will be only $10.00 - less than the cost of a pizza! Your monthly Pure Power premium will fluctuate to cover your entire home’s energy usage. (Available for residential and small commercial customers.)

  • Pure Blocks: If you want your Pure Power premium to remain the same each month, choose one of the "Block"* options.
    • $10 Block - 1,000 kWh per month
    • $5.00 Half Block - 500 kWh per month
    • Customers may sign up for as many blocks as they desire but can only sign up for one half block.

 *1 "Block" = 1 Renewable Energy Certificate = 1,000 kilowatthours 
Ameren Missouri renewable energy credits, RECs, 100% pure, pure blocks, block option
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