U.S. firm sells first micro-hydro units for Ghana

Internal Hydro International Inc. of the United States announced it has sold its first two 30-kW Energy Commander low-impact hydropower units for use in Ghana.

Internal Hydro said the units were sold for US$60,000 to Kingswell Financial LLC of the U.S. for use in residential developments in Ghana under limited use terms. It said the units would be delivered in 180 days, but gave no further details on the installations.

Internal Hydro describes its Energy Commander as a positive displacement system that differs from traditional turbine technology in that it uses cylinders and a patented control valve to take in a low pressure flow, through a small inlet, using all the flow inside the cylinders to create mechanical forces for a generator.

The manufacturer said its normal business model in North America and Europe will be to retain ownership of the generating units, while receiving a revenue stream from electricity, tax credits, and renewable energy credits.

“While we know the grid placement of units will be appreciably larger revenue-wise, this is the first of many expected announcements of unit sales to non-grid countries and circumstances, where we simply would not have appreciated the normal revenue flows as we have in an electrical grid situation with renewable energy credits, tax credits, and a stable grid environment,” Internal Hydro President Craig Huffman said.

In the U.S., Internal Hydro has submitted a proposal to the Corps of Engineers to install 40 small hydro generating units at the Corps’ W. Kerr Scott Dam, on the Yadkin River near Wilkesboro, N.C. It said that proposal would have an installed capacity of 1.2 MW and projected annual revenue of $750,000. The technology has not yet been installed at a dam to generate hydropower.

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