SCPPA's Geothermal Projects
How Geothermal Energy Works
As you dig deeper into the earth and get closer to the core, the temperature rises. Breaks in the earth’s crust and mantle allow the temperatures from the core rise to the surface. In serious cases, these temperatures cause earthquakes and volcanoes, however the temperatures continuously rise even when there is no natural disaster. Therefore, the best location for geothermal plants are where tectonic plate boundaries can be found. Southern California, near the Mexican border, is an ideal location for geothermal plants as it has several fault lines including the San Andreas, Elsinore and San Jacinto that can provide higher earth temperatures.
Geothermal plants need high-temperatures to be rising towards the earth’s surface anywhere from 300 to 700 degrees Fahrenheit. The plants run pipes below the earths surface that are filled with water and utilize the high temperatures to heat water, turning it into steam. This steam is then directed towards a turbine, producing energy.
Parasitic Power Consumption
SCPPA's geothermal and landfill gas plants report both a gross and net MW amount; the difference is the energy it takes to run the plant. Ormat's Heber 1 geothermal plant creates 62.5 MW of energy and it takes 16.5 MW to run the geothermal plant, leaving 46 MW of energy for SCPPA participants to receive. The on-site power used by the plant is called parasitic power consumption.
Click on any link below to learn more about that project:
>Don A. Campbell Phase I Project
>Don A. Campbell Phase II Project
>Heber South/Gould 2
>Ormat Geothermal Project
>Ormat Heber 1
>Ormat NV Geothermal Portfolio Project
>Ormesa Geothermal Complex Project