The Cerro Prieto Geotherminal field covers an area of approx. 15km2, the first power unit was commissioned in 1973, presently there are 13 power units in operation with a total capacity of 720mw. The geothermal field has 120 km of steam pipe and 60 km of channels to channel brine. Baja California, Mexico. © March 5 2008 Marco van Middelkoop/Aerophoto-Schiphol..