KenGen commissioned a US$1 billion 280MW geothermal project. A world first in its class! The first 140MW from Olkaria 1 plant was commissioned in October 2014 and the final 140MW in December 2014. The 280MW plants with a life of up to 25 years have helped stabilize tariffs since t capital at low interest rates, which means very favourable repayment terms and lower tariffs, but also investment in plants that will be with us for the next 25 years. Implementation of the project got underway in 2010.