Geothermal energy is clean, renewable, and sustainable. In theory geothermal is heat derived within the sub-surface of the earth. Water and/or steam carry the geothermal energy to the Earth's surface. Depending on its characteristics, geothermal energy can be used for heating and cooling purposes or be harnessed to generate clean electricity. Presently, Kenya is among the top-ten largest producers of geothermal energy in the world.
Today more than 50% of energy consumed by Kenyans come from the Olkaria Geothermal fields in Naivasha, Nakuru County. As at June 2019, KenGen had an installed capacity of 534MW of geothermal energy which accounts for about 33% of its total capacity. Some of the geothermal power plants owned and operated by KenGen include: Olkaria I, Olkaria I Additional Unit 4 and 5, Olkaria II, Olkaria IV, Eburru.
KenGen has also pioneered and successfully rolled out an innovative idea known as the Wellhead Technology, that enables the company to make additional revenue through early utilization of steam wells to generate electricity. Currently about 83.6MW of the total installed geothermal capacity comes from the Wellheads in Naivasha.