May 26, 2018
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Efficiency upgrade at Wyman Dam in Moscow entering final phase

By Christopher Cousins, BDN Staff

MOSCOW, Maine — A long-term upgrade of electricity-generating equipment at the Wyman Dam will begin later this year, providing the company proposing it receives approval from the Federal Energy Regulatory Commission.

There are three generators at the Wyman Dam at the southern end of Wyman Lake, which is part of the Kennebec River. Two of the generators have been upgraded over the past several years, making the proposed project the final phase of an overall efficiency upgrade at the dam. The FERC application for the project appeared on the Federal Register earlier this week.

Steve Stengel is the spokesman for NextEra Energy Resources, a division of Florida Power and Light, which owns the dam. He said the proposed upgrade — along with some other projects unrelated to the FERC application — will increase the dam’s licensed capacity from about 84 megawatts to 88 megawatts. According to an online summary of the application, the upgrade will increase the amount of water that goes through the dam by about 2.5 percent from 8,828 cubic feet per second to 9,050 cubic feet per second.

“In essence, this increases the overall efficiency of the dam,” said Stengel. “None of this work impacts the flow of water downstream … it’s not going to be something that’s visible to the public. All the work is done inside the generator building.”

The project is proposed a subsidiary of Florida Power and Light called FPL Energy Maine Hydro LLC, based in Hallowell.

Stengel said that if the application to FERC is approved without delay, the work likely would be complete by the end of this year. He would not say how much the project will cost because that information is proprietary. Electricity generated at the Wyman Dam is sold into the electrical market for whoever wants to purchase it, he said.

The FERC application is viewable on the Federal Register’s website,, by typing in the project number, 2329-089, in the “quick search” box. FERC is accepting comments about the project until Aug. 5.

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