Power in the desert  

Posted by Big Gav in , , ,

The Guardian has progress report on the solar thermal power juggernaut in Spain - Power in the desert: solar towers will harness sunshine of southern Spain.

In the desert of southern Spain, 20 miles outside Seville, more than 1,000 mirrors are being carefully positioned. Each is about half the size of a tennis court, so the adjustments will take time. But when they are complete in a few weeks, it will mark a major moment in the quest for renewable energy.

The mirrors are part of the world's biggest solar tower plant, a technology that reflects sunlight to superheat water at a central tower. Once this €80m (£67m) plant is inaugurated in January, it will generate 20MW of electricity, enough to power 11,000 Spanish homes.

Concentrated solar power (CSP) technology, as it is known, is seen by many as a simpler, cheaper and more efficient way to harness the sun's energy than other methods such as photovoltaic (PV) panels. But CSP only works in places with clear skies and strong sunshine.

The Andalucian deserts are an ideal location, and Spain hopes the PS20 plant will enable it to take advantage of its huge solar resource and lead the field in CSP technology.

"The radiation hitting the earth is 10,000 times the consumption of energy," said José Domíngues Abascal, chief technology officer at Abengoa, the Spanish energy company behind the plant. "There is great potential in solar energy."

Abengoa has already built a smaller version of the tower technology to test that the idea works. The 11MW PS10 system has been generating electricity for almost two years. Its new design uses an area larger than 100 football pitches, with 1,255 mirrors, called heliostats, each with a collecting area of 120 sq m. These track the sun as it moves through the day and reflect the energy to the top of a 160-metre tower at the centre of the field. Here, the concentrated light is used to heat water to more than 1000C, producing steam that can turn an electricity generating turbine.

When switched on, the new plant will be the world's largest commercial CSP plant feeding electricity into a national grid. It will be also be a significant step for tower technology, seen as a candidate for the large-scale solar plants of the future.

Spanish firms are charging ahead with CSP: more than 50 solar projects around Spain have been approved for construction by the government and, by 2015, the country will generate more than 2GW of power from CSP, comfortably exceeding current national targets. The companies are also exporting their technology to Morocco, Algeria and the US.

"CSP is at the very beginning of a big boom," said José Luis García, at Greenpeace in Spain. "Spain is in a good position to develop and implement the technology. We have the sun so we are in the best position to lead in this field."

The country's clean energy targets are in line with the EU's plan to source 20% of primary energy from renewables by 2020, which means that 30% of electricity would have to come from carbon-free sources. A new EU renewables directive would increase that electricity target to 40%, but García said Spain could easily reach for more, up to 50%.

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 (619) global warming (423) solar power (397) peak oil (355) renewable energy (302) electric vehicles (250) wind power (194) ocean energy (165) csp (159) solar thermal power (145) geothermal energy (144) energy storage (142) smart grids (140) oil (139) solar pv (138) tidal power (137) coal seam gas (131) nuclear power (129) china (120) lng (117) iraq (113) geothermal power (112) green buildings (110) natural gas (110) agriculture (91) oil price (80) biofuel (78) wave power (73) smart meters (72) coal (70) uk (69) electricity grid (67) energy efficiency (64) google (58) internet (50) surveillance (50) bicycle (49) big brother (49) shale gas (49) food prices (48) tesla (46) thin film solar (42) biomimicry (40) canada (40) scotland (38) ocean power (37) politics (37) shale oil (37) new zealand (35) air transport (34) algae (34) water (34) arctic ice (33) concentrating solar power (33) saudi arabia (33) queensland (32) california (31) credit crunch (31) bioplastic (30) offshore wind power (30) population (30) cogeneration (28) geoengineering (28) batteries (26) drought (26) resource wars (26) woodside (26) censorship (25) cleantech (25) bruce sterling (24) ctl (23) limits to growth (23) carbon tax (22) economics (22) exxon (22) lithium (22) buckminster fuller (21) distributed manufacturing (21) iraq oil law (21) coal to liquids (20) indonesia (20) origin energy (20) brightsource (19) rail transport (19) ultracapacitor (19) santos (18) ausra (17) collapse (17) electric bikes (17) michael klare (17) atlantis (16) cellulosic ethanol (16) iceland (16) lithium ion batteries (16) mapping (16) ucg (16) bees (15) concentrating solar thermal power (15) ethanol (15) geodynamics (15) psychology (15) al gore (14) brazil (14) bucky fuller (14) carbon emissions (14) fertiliser (14) matthew simmons (14) ambient energy (13) biodiesel (13) investment (13) kenya (13) public transport (13) big oil (12) biochar (12) chile (12) cities (12) desertec (12) internet of things (12) otec (12) texas (12) victoria (12) antarctica (11) cradle to cradle (11) energy policy (11) hybrid car (11) terra preta (11) tinfoil (11) toyota (11) amory lovins (10) fabber (10) gazprom (10) goldman sachs (10) gtl (10) severn estuary (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) methane hydrates (9) pge (9) sweden (9) arrow energy (8) bolivia (8) eroei (8) fish (8) floating offshore wind power (8) guerilla gardening (8) linc energy (8) methane (8) nanosolar (8) natural gas pipelines (8) pentland firth (8) saul griffith (8) stirling engine (8) us elections (8) western australia (8) airborne wind turbines (7) bloom energy (7) boeing (7) chp (7) climategate (7) copenhagen (7) scenario planning (7) vinod khosla (7) apocaphilia (6) ceramic fuel cells (6) cigs (6) futurism (6) jatropha (6) nigeria (6) ocean acidification (6) relocalisation (6) somalia (6) t boone pickens (6) local currencies (5) 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)