y has shut down the Obama administration's first major test of geothermal energy, after neighbours complained of earth tremors, the has reported. The US company, which was in charge of the northern California project, earlier abandoned a similar deep-drilling project in Switzerland for the same reason, as we . This could raise interesting questions for the Abu Dhabi government's renewable energy company, , which is planning a to power the proposed development, close to the Abu Dhabi International Airport. AltaRock announced in September that it had suspended drilling in California, but has yet to formally announce the project's closure. Read the press release . You can also read an informative article about the reasons for that decision . This is not the end of the road for the AltaRock. The company is also involved in a geothermal energy project in Oregon, and recently acquired for a project in the northwestern US state of Washington. It will be interesting to see whether those projects fare any better than the company's first two efforts.