Alternative Energy Resources on the Rise
By Shayla Warner
Rose Brown
City Utilities researches alternative energy choices for the city of Springfield by being a part of a Renewable Energy Project that started back in 2003 to make the the energy choices better and cheaper.
City Utilities started the Renewable Energy Research project in 2003 by tracking and collecting data for research and education. The purpose for this project is to provide actual data for renewable energy generation locally. There was no credible data found for generating wind or solar energy in the city of Springfield. “In 2003, solar panels and windmills net metering, any customer has solar panels at their house they would buy that energy and pay them back”, said Cara Sheafer.
Energy that is produced from the wind turbineand solar panels passes through an inverter to combine it to CU’s (City Utilities) existing power supply. After the energy from the turbines solar panels goes through a meter that measures the energy collected. The collected energy only powers enough electricity for the use of the a building. “No batteries are used for City Utilities systems, wind and solar panels power small portions of this building”, said Sheafer, the energy management and conservation.
The wind turbine at the CU’s TecHOUSE is on a 90 foot pole and each blade is 11.5 feet in length. The diameter of the wind turbine is 23 feet. In order to generate energy, the wind has to be blowing at least 8 mph. For the turbine blades to spine constantly the wind must be above 8 mph, then spins a shaft connected to the generator which makes the electricity. An external anemometer measures the winds speed and transmits this data to the controller. CU is trying out the wind turbines for Springfield area to see how they will do in these conditions. Until then, CU purchases big amounts of wind from the Kansas wind farms. Sheafer said “The wind mills in Kansas are on about 300 foot poles.”
The solar panels at CU’s TecHOUSE are 13 feet by 15 feet racks that hold the photovoltaic solar panels arrays. One array is stationary. The second dynamically tracts the sun, meaning it follows the sun through out the day so it can get the maximum amount of solar energy. Each arrays is capable of producing 2.2 kilowatts.While solar panels are very expensive right now. Yet people are spending the money on them just to have other energy choices. Sheafer says,”The solar side has to continue to grow and it gets cheaper and cheaper.” Sheafer also says, “I think people are working on their own solar panels in their garages.”
The Renewable Energy Research project consists of the wind turbines which cost $88,000; the tracking solar array which cost $22,000; and the fixed solar array which cost $18,000. Leaving the grand total of $124,000 spent on the project alone. Based on the data from the wind turbine and the solar panels, it will take over 350 years for the payback on the wind turbine and approximately 95 years on the payback of the solar panels.
It is important to understand the difference between energy and power, as both are used in describing electric generation. power is the rate at which electricity is produced or consumed. Is usually measured in kilowatts (kW). Energy is the amount of electricity produced or consumed. This is usually measured in kilowatt-hours (kWh). You can think of this like a speedometer and odometer on a car. The speedometer tells you how fast you are going (Power). The odometer tells you how far yo have traveled (Energy). Sheafer says,”It would be exciting to see where the solar panels and wind turbines goes in five to ten years.”