Locks and Dam 1, Mississippi River, St. Paul/Minneapolis, Minnesota. Feasibility Report for Hydropower.
CORPS OF ENGINEERS ST PAUL MN ST PAUL DISTRICT
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This report presents a detailed evaluation of additional hydropower potential at locks and dam 1. The original Federal navigation locks and dam project included a foundation for a hydropower plant to be developed by non-Federal interests. The existing hydropower plant and equipment are owned and operated by the Ford Motor Co. The existing four turbines generate a combined nameplate capacity of 14.4 MW megawatts. This study was conducted under the assumption that the Federal government would develop additional hydropower at locks and dam 1. It concludes that an additional hydroelectric capacity of 7.2 MW would be the optimum amount that could be added to this site. That capacity would produce additional average annual energy of 21,450 MWh megawatt-hours. The added energy recommended would equate to burning 36,500 barrels of oil or 10,000 tons of coal per year. Total investment first cost of the recommended hydropower development would be 11,696,000 or 1,076,000 on an average annual basis, including annual operation and maintenance costs. Average annual benefits based on the avoided costs of a fossil fuel plant are 1,325,000. Net annual benefits are 249,000. The benefit-cost ratio is 1.23 based on an 8-34 discount rate, 100-year project life, and October 1984 price levels. Many of the environmental impacts normally associated with hydropower development would not occur because no new impoundment or changed plan of regulating river flows would be required.
- Electric Power Production and Distribution
- Civil Engineering