The proposal is Ameren Missouri’s first request for approval of new and expanded energy efficiency programs under the Missouri Energy Efficiency Investment Act (MEEIA).

Under the programs, Ameren Missouri will make energy efficiency investments of about $145m over three years, beginning early January 2013.

These investments are expected to result in about $500m in total customer benefits over the next 20 years.

Annual energy savings are expected to be nearly 800 million kWh, which is equal to the energy consumption of more than 60,000 average Missouri homes annually.

Costs and related incentives associated with this program will be reimbursed to Ameren Missouri over the next three to five years.

Ameren Missouri chairman, president and CEO Warner Baxter said the current proposal will result in additional significant long-term benefits for our customers and the entire state of Missouri through lower energy usage.

State Representative Steven Webb said greater investments in energy efficiency and needed infrastructure are exactly the kind of investments needed to secure Missouri’s energy future.

The MEEIA filing must be approved by the MPSC before it can take effect in early 2013.

The company said the expenditures for the new programs will be nearly twice the size of the utility company’s previous energy efficiency programs.