by janrinok on (#6BJ8Y)
quietus writes:"Remind me that the most fertile lands were built by the fires of volcanoes." -- Andrea Gibson, The Madness Vase.Ninety-two (92) percent of Kenya's electricity comes from renewable resources. About 50 percent of all that is covered by the 5 geothermal power stations at Olkaria, near Hell's Gate National Park.That park is just a tiny part of the thousands of miles long East African Rift System, where the Indian, Arabian and African continental plates meet.The big advantage of geothermal power is that it produces a steady base load of electricity -- currently 5GW at Olkaria, with an estimated total 10GW potential.That has aroused the interest of the German government, co-investors and providers of technical expertise for the project. The potential for geothermal power in Germany, through deep (miles deep) drilling is estimated at a quarter of the country's heating needs: before 2030, at least 100 geothermal power projects should be in place.Geothermal energy projects, however, are capital intensive -- the Olkaria project actually started getting steam in the 90s, mainly supported by the Japanese government and the United Nations Development Programme; Germany has been coinvesting for the last 20 years, alongside with the European Investment Bank. Besides, utility-scale solar and onshore wind is hovering at around $35 per MWh, while geothermal currently is slotted around $70 per MWh.However, solar and wind are intermittent sources of energy: if you want to buy reliability, nuclear or coal- and gas-fired plants are your comparison. In an April 2023 comparison, investment bank Lazard comes to an estimated cost, unsubsidized, between $68 and $166 per MWh for coal, $141 and $221 for nuclear, and $61 to $102 per MWh for geothermal energy. Only gas-combined-cycle power generation could potentially be cheaper ($39 to $101 per MWh), for providing base load (see page 2 in the pdf).Read more of this story at SoylentNews.