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Pay As You Save (PAYS)

Ameren Missouri · Utility program

Upfront-cost recovery through a monthly bill charge, with no credit check; the charge is capped by the program’s savings test.

Ameren Missouri’s PAYS program lets eligible residential electric customers make energy-efficiency upgrades with no loan or credit check and repay the cost through a monthly bill charge. The site says a free home assessment comes first, and the bill charge is designed to be lower than the estimated monthly savings.

Last verified: September 16, 2026

Program details

How it works

After approval, a trained energy expert visits the home to perform a no-cost home assessment and recommend upgrades. A program partner installs the upgrades. Ameren then recovers the project cost through a fixed monthly charge on the electric bill.

The company says the PAYS charge includes installation cost, 3% interest, and a small program close-out fee. Once the project is paid off, the charge ends.

What upgrades can be covered

The page says typical upgrades include:

  • HVAC
  • Attic insulation
  • Duct sealing
  • Air sealing
  • LED lighting

It also says upgrade eligibility depends on whether the monthly PAYS charge is no more than 80% of the estimated average monthly savings from the upgrades.

How to apply

  • Start by completing the assessment form.
  • Ameren then schedules an appointment for the no-cost home assessment.

Important program rules

  • The program is not a loan or credit card.
  • No credit check is required.
  • If upgrades fail without the participant’s fault, the program will arrange repair or replacement and may suspend the charge if that cannot be done promptly.

Full eligibility details

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