Economic Development

March 12, 2026

Five Customer Protections Built Into Missouri’s Growth Plan

Ameren Missouri’s new Powering Missouri Growth Plan helps attract new businesses that bring jobs and investment to our communities while providing robust customer protections.

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In November 2025, the Missouri Public Service Commission approved Ameren Missouri’s Powering Missouri Growth Plan, which is designed so that high-usage customers – those with 75 megawatts or more of expected monthly peak power demand, such as data centers and advanced manufacturing businesses – pay their fair share of grid enhancements and energy costs. Through this plan, there are at least five key customer protections included in Ameren Missouri’s new rate plan:

1. Large customers are required to pay their fair share.
Ameren Missouri’s Powering Missouri Growth Plan, in alignment with Missouri state law, requires new large load businesses to pay their fair share of service costs, protecting other customers from unjust or unreasonable charges.

2. No special discounts or incentives.
Large load customers do not receive discounted rates or incentives from Ameren Missouri, ensuring fairness across all customer classes. Even if they use less electricity than expected, large load customers must pay a minimum monthly demand charge of 80% of their contracted maximum electric demand.

3. Strong financial protections are required.
Large load customers must pay upfront 100% of all costs associated with hooking up to the energy grid. They also must pay upfront financial security and collateral requirements equivalent to two years of minimum monthly bills.

4. Long‑term commitments provide stability.
Long‑term contracts of at least 12 and up to 17 years are required for large load customers, which unless terminated by the customer or Ameren Missouri at the end of that term, automatically extend for terms of five years each. The contracts also include substantial early termination fees if minimum obligations are not met.

5. Customers get the benefits.
When profits exceed authorized levels, revenues are shared with other customer classes, including income‑eligible customers. Additionally, an independent analysis conducted by Charles River Associates, “US Retail Electricity Rate Trends Analysis” (2026), recently confirmed that, with protections in place, data centers help spread costs more widely and may absorb a significant portion of the total shared cost, reducing the cost for existing customers.

With these robust customer protections in place, Missouri can remain open for business while Ameren Missouri works to keep electric rates as low as possible and provide reliable service to all customers.

For more information about the plan, visit Ameren.com/PoweringMissouriGrowth.