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New generating capacity in August includes replacement hydro unit


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New generating capacity in August includes replacement hydro unit

August was a light month for U.S. power generation capacity additions and completions. The largest project put into service was a hydroelectric plant in Washington state.

Overall for the month, 330 MW of new capacity came online. By reliability region, the largest amount, 197 MW, was in the SERC Reliability Corp. region.

Three projects totaling 319 MW were announced during August, two wind and one solar, all in different parts of the country.

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Completed projects

The largest single project completed in August was the 122-MW unit 3A at Grant County Public Utility District's Wanapum Dam hydro facility in Kittitas County, Wash. The complex consists of 10 turbines and the utility is replacing the original units, which began operating in the early 1960s, in a multiyear project set to be completed by 2020.

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Another large project completed in August was American Municipal Power Inc.'s 76-MW Smithland Lock and Dam, on the Ohio River in Livingston County, Ky. The project is one of three run-of-river hydro facilities American Municipal Power is adding at dams on the Ohio River. The output will be provided to 79 American Municipal Power member utilities, including five Michigan member utilities served by the Michigan South Central Power Agency.

Announced projects

One of the new projects being tracked for the first time in August was an offshore wind development.

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Deepwater Wind announced the development of the the 144-MW Revolution Wind Offshore project, off of New Bedford, Mass., coupled with a 40-MWh energy storage system by Tesla Inc. The project, announced July 31 and added into the S&P Global Market Intelligence database in early August, was proposed in response to a request for proposals issued by Massachusetts utilities under state legislation. Deepwater, owned by D.E. Shaw & Co. Holdings LP and SunEdison Inc., also proposed two other offshore wind configurations, at 288 MW and 96 MW. An in-service date of 2023 is proposed.

Private developer Tri Global Energy LLC's 100-MW Sugar Loaf Wind Farm was the second-largest project announced during the month, though the Dallas-headquartered company did not give a location more specific than the state of Nebraska or a completion date. It is estimated to cost $195 million.

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