Geothermal without the Earthquakes  

Posted by Big Gav in , ,

Fast Company has an article on efforts to reduce the side effects caused by drilling for geothermal energy - Geothermal without the Earthquakes. Technology Review has more - Geothermal without the Earthquakes.

Welcome to the scenic Mayacamas mountains of Northern California. Feel that shaking? It's an earthquake. There are about 40 of those a year. That's because the Mayacamas are home to the Geysers geothermal field, where geothermal power provides 1,500 megawatts of clean energy and has the unfortunate side effect of causing "natural" disasters.

The process works by pumping liquid into the ground at high pressures, which fracture rocks and get to the hot air underneath. But those fractures can increase the frequency and severity of earthquakes, especially in earthquake-prone zones like Northern California. Around the Geysers, it has become a large problem.

GTherm, a Connecticut-based startup, claims it has developed an EGS system that won't cause earthquakes. Instead of pumping liquids into wells at high pressures to fracture rock, GTherm's "heat nest" can be installed at the bottom of a well to draw out heat from the surrounding rock. Nice and non-shaky. According to MIT Technology Review, fluid travels down the well in a closed loop, bringing heat to the surface and creating steam that turns turbines.

The whole process requires very little water, which means GTherm can set up shop anywhere that there are ground temperatures between 250 °F and 300 °F--not just in places with water reservoirs. This includes thousands of used-up gas and oil wells around the U.S. that were previously off-limits for geothermal. Since we already dug all those holes in the ground, we might as well get some clean use out of them.

0 comments

Post a Comment

Statistics

Locations of visitors to this page

blogspot visitor
Stat Counter

Total Pageviews

Ads

Books

Followers

Blog Archive

Labels

australia (604) global warming (381) solar power (365) peak oil (335) renewable energy (228) electric vehicles (210) wind power (181) ocean energy (160) csp (153) geothermal energy (143) solar thermal power (140) smart grids (139) tidal power (135) coal seam gas (129) nuclear power (125) oil (123) energy storage (122) solar pv (119) lng (114) geothermal power (112) china (111) iraq (111) green buildings (107) natural gas (106) agriculture (87) oil price (79) biofuel (77) smart meters (72) wave power (70) electricity grid (66) uk (66) energy efficiency (63) coal (57) google (57) internet (51) bicycle (49) shale gas (49) surveillance (49) food prices (48) big brother (47) thin film solar (42) canada (40) biomimicry (39) scotland (38) ocean power (37) politics (37) new zealand (35) shale oil (35) air transport (34) algae (34) water (34) concentrating solar power (32) queensland (32) california (31) credit crunch (31) saudi arabia (31) bioplastic (30) offshore wind power (29) population (29) tesla (29) cogeneration (28) geoengineering (28) arctic ice (26) batteries (26) drought (26) resource wars (26) woodside (26) bruce sterling (25) censorship (25) cleantech (25) ctl (23) economics (22) limits to growth (21) carbon tax (20) coal to liquids (20) distributed manufacturing (20) indonesia (20) iraq oil law (20) lithium (20) origin energy (20) brightsource (19) buckminster fuller (19) rail transport (19) ultracapacitor (19) santos (18) ausra (17) exxon (17) michael klare (17) cellulosic ethanol (16) collapse (16) electric bikes (16) mapping (16) ucg (16) atlantis (15) bees (15) concentrating solar thermal power (15) ethanol (15) geodynamics (15) iceland (15) psychology (15) brazil (14) fertiliser (14) lithium ion batteries (14) al gore (13) ambient energy (13) biodiesel (13) bucky fuller (13) carbon emissions (13) cities (13) investment (13) kenya (13) matthew simmons (13) public transport (13) biochar (12) chile (12) internet of things (12) otec (12) texas (12) victoria (12) cradle to cradle (11) desertec (11) energy policy (11) hybrid car (11) terra preta (11) amory lovins (10) fabber (10) gazprom (10) goldman sachs (10) gtl (10) severn estuary (10) tinfoil (10) toyota (10) volt (10) afghanistan (9) alaska (9) biomass (9) carbon trading (9) distributed generation (9) esolar (9) four day week (9) fuel cells (9) jeremy leggett (9) pge (9) sweden (9) antarctica (8) arrow energy (8) big oil (8) eroei (8) fish (8) floating offshore wind power (8) guerilla gardening (8) linc energy (8) methane (8) methane hydrates (8) nanosolar (8) natural gas pipelines (8) pentland firth (8) relocalisation (8) saul griffith (8) stirling engine (8) us elections (8) western australia (8) airborne wind turbines (7) bloom energy (7) boeing (7) bolivia (7) chp (7) climategate (7) copenhagen (7) vinod khosla (7) apocaphilia (6) ceramic fuel cells (6) cigs (6) futurism (6) jatropha (6) local currencies (6) nigeria (6) ocean acidification (6) scenario planning (6) somalia (6) t boone pickens (6) space based solar power (5) varanus island (5) garbage (4) global energy grid (4) kevin kelly (4) low temperature geothermal power (4) oled (4) tim flannery (4) v2g (4) club of rome (3) norman borlaug (2) peak oil portfolio (1)