The Greybull Valley irrigation district located in northern Wyoming is a small community of people who are in control of the irrigated water for the valley. The Greybull valley is located in northern Wyoming in a rural area where people are not real impressed by new projects that cost $9 million dollars. According to a Greybull Valley Irrigation District Feasibility Study done in 2008, the costs of a new hydroelectric facility are shown below.
Cost Items Project Cost
Licensing $200,000
Legal Fees $250,000
Power house (Const. cost)
- Building (Includes Turbine) $6,000,000
-Turbine upgrade $1,000,000
First Yr. O/M $45,000
Transmission Lines $1,100,000
First Yr. O/M $45,000
Transmission Lines $1,100,000
Design (Engineering Fees) $600,000
Project Total: $9,195,000
Project Total: $9,195,000
Electric power is sold in kilowatts per hour (kwh). The secret to making as much money as possible for a particular facility is to sell as much power as possible. The efficiency of the turbine, generator and pumps all play into how much power that can be produced. The equation for producing power is shown below.
Power = (Flow Rate)*(Water Head)*(Unit Weight of Water)
The Lower Sunshine Dam provides 140 feet of total head and a maximum flow rate of 422 cubic feet per second. The power output will be around 13,502,659 kWh/year and will have an annual income of about $706,000 per year. After the cost of operation and maintenance the project will yield over $200,000 per year which will make the project feasible to the Greybull Valley Irrigation District.
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