Kenya’s KenGen Completes construction of 83MW Geothermal Plant

An additional 83.3 megawatts of power is set to be added to Kenya's national power grid.

By Chriselle Moraes on
11th April 2022

Kenya Electricity Generating Company (KenGen) has announced the completion of the construction of the 83.3 megawatts Olkaria I, Additional Unit (AU) 6 Geothermal Power Plant, setting in motion activities to add the additional power to the national grid.

According to a statement issued by KenGen, the completion of the installation of the geothermal plant and related construction works was preceded by the successful delivery of full steam to the power plant by Japan’s Fuji Electric Co. Ltd, the project’s turbine manufacturer and Marubeni Corporation, the EPC contractor for the geothermal power plant project.

The completed plant is currently undergoing reliability tests to confirm its output, prior to commencing commercial operation. The plant is expected to be operational and connected to the national grid by June 2022.

Olkaria I Geothermal Power Station was the first geothermal power plant in Africa. The Olkaria I power station is one in a series of six geothermal power stations located in the Olkaria area in Kenya's Nakuru County, and owned by Kengen. 

Olkaria 1 first began operations in 1981, with a single unit of a generation capacity of 15 megawatts. Two more turbine units of 15 megawatts capacity each were commissioned at the facility in 1982 and 1985, increasing the capacity of the Olkaria 1 power station to 45 megawatts. A fourth and a fifth unit were commissioned in January 2015, bringing the total installed capacity to 185 megawatts.

The turbines for units 1, 2 and 3 at the Olkaria geothermal power station were refurbished in 2016, increasing the combined capacity of the three turbines from 45 megawatts to 50.7 megawatts, and bringing the total installed capacity of the power station to 190.7 megawatts.

Construction of unit 6 of the Olkaria 1 power station commenced in December 2018, following a groundbreaking ceremony attended by Kenya's President Uhuru Kenyatta. Unit 6 will add an additional 83.3 megawatts which will bring the total installed capacity of the Olkaria 1 plant to 274 megawatts.




Rebecca Miano, KenGen M.D. and CEO, praised the timely completion of the plant and emphasized its importance in contributing to Kenya’s progress towards 100% utilization of renewable energy by 2030. She said, “The construction of Olkaria I Unit 6 is aligned to the company’s long-term strategy and Kenya’s Least Cost Power Development Plan (LCPDP) focused on the sustainable supply of renewable energy in support of the Government’s Big Four Agenda.”

KenGen is the largest electrical power producer in Kenya, generating over 65% of the electricity consumed in the country, and with an installed power generation capacity of 1,817.82 megawatts. Currently, Kengen's installed geothermal capacity is 713 megawatts, accounting for 39% of KenGen’s total installed generation capacity. 

With the additional 83.3 megawatts output from this project, Kengen's geothermal power generation capacity is expected to grow to 796 megawatts, pushing the share of KenGen’s installed geothermal capacity up to about 42%.

The Kenya government plans to achieve 100% renewable energy by 2030. Speaking in November 2021, at the UN Climate Change Conference (COP26) in Glasgow, Scotland, President Kenyatta said "Renewable energy in Kenya currently accounts for 73% of the installed power generation capacity, while 90% of the electricity in use is from clean sources. We are on course to achieve our target of 100% use of clean energy by 2030 and to achieve 100% access to clean cooking by 2028."

Top Photo: A geothermal power plant operated by KenGen in the Olkaria Geothermal field (

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