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Unlike conventional generation, distributed generation provides power at the enduser's site. It could mean a reduced need for new, large centralized generating facilities and transmission lines.
One example of this distributed generation is the microturbine, developed by the Capstone Turbine Corporation out of Tarzana, Calif. Sierra took ownership of its first microturbine from Capstone in January. The unit generates 28 kilowatts, runs on natural gas, and can be used in a grid-connected mode ideal for base loads and peak shaving.
"Sierra Pacific was able to purchase one of the first commercial units available from Capstone because of our investment in the Nth Fund," said Jack McGinley, Sierra's New Product Development manager.
McGinley described the Nth Fund as a venture capital group that's focused on investments in energy-related technologies and products. "The Fund invested early in Capstone, and Sierra has realized a preferred customer status with the company as a result," he said.
Sierra's first microturbine (a second is expected in the spring) will be located at Sierra Plaza in the car pool area near the main gas meter. The unit produces electricity efficiently and cost effectively, emitting only very low levels of pollutants and remaining virtually maintenance free. Currently, it runs on high-pressure natural gas, but also can operate on the low-pressure version. Future microturbines could run on diesel, kerosene, propane and other fuel options. Potential applications for this gas turbine include small commercial customers, heat generation and remote applications, such as farm irrigation pumps.
