04 May '11, 9pm

Another Cheap Way to Store Solar and Wind Power

UK startup Isentropic Energy has proposed the simplest of thermal energy storage systems, according to Powermag . Two large containers of gas and gravel, one hot (500C) and one cold (–160C) provide the temperature difference to operate a heat pump . Off-peak surplus wind power or solar energy is used to heat up the contents of the hot tank and to retain that temperature. No refrigerants, chemicals or water are used, and it has no particular geographic requirement, unlike several energy storage ideas currently in pilot testing. It could be cheap at utility-scale – as little as $10/kWh (one time, to build it), according to the company’s chief technology officer, Jonathan Howes, and the overall operating efficiency of the energy storage process is claimed to be 72% to 80%. For this much energy storage, each tank of gas and gravel is the size of a small building, a little over...

Full article: http://cleantechnica.com/2011/05/04/another-cheap-way-to-...

Tweets

Idaho has more wind power than it knows what to do with (via @cleantechnica)

Idaho has more wind power than it knows what to...

cleantechnica.com 03 May '11, 9pm

Despite being not one of the states with a renewable energy standard (RES), Idaho’s wind energy sector is flourishing. It ...

Discovery of Cheap Catalyst Advances Case for H...

cleantechnica.com 04 May '11, 3pm

Do you really think there’s much chance that we’ll ever drive hydrogen-fueled cars? It looks like we’ll have affordable EV...

MIT Showcases New Way of Turning Sun's Heat into Electricity

MIT Showcases New Way of Turning Sun's Heat int...

renewableenergyworld.com 05 May '11, 12pm

Their system, described in a paper published online in the journal Nature Materials on May 1, produces power with an effic...

Infographic: Why the U.S. Military is In Love With Solar Energy

Infographic: Why the U.S. Military is In Love W...

1bog.org 09 May '11, 1am

What’s One Block Off the Grid? One Block Off the Grid is the smart new way to go solar. We make it easier and more afforda...

Beyond Wind and Solar: What Are Our Real Options?: Solar power and wind power are usually the first topics tha...

Beyond Wind and Solar: What Are Our Real Option...

greentechmedia.com 29 Apr '11, 5pm

Solar power and wind power are usually the first topics that come to mind when the discussion turns to renewable energy so...

Offshore Wind Power Market about to Boom (Report)

Offshore Wind Power Market about to Boom (Report)

cleantechnica.com 03 May '11, 7pm

However, part of this is that we have been trying to essentially transplant turbines built for onshore wind offshore. A lo...

Solar & Energy Efficiency are "Cute" But Not the Answer, Bill Gates Says

Solar & Energy Efficiency are "Cute" But Not th...

treehugger.com 04 May '11, 9pm

Bill Gates is keen on the notion that we can invent our way out of climate change . This isn't such a terrible thing, and ...

Baltic Sea Could Be Home to 1 GW of Wind Power Capacity

Baltic Sea Could Be Home to 1 GW of Wind Power ...

renewableenergyworld.com 06 May '11, 6pm

The Baltic 1 wind park, officially inaugurated by German Chancellor Angela Merkel on May 2, is about 16 kilometers (10 mil...

Wind Power Operators Beware: OSHA Is Focused on You

Wind Power Operators Beware: OSHA Is Focused on...

renewableenergyworld.com 05 May '11, 8pm

For over a year now, the Occupational Safety & Health Administration has had on the front page of its website the prominen...

CLEAN nrg NOT

CLEAN nrg NOT

cleantechnica.com 02 May '11, 11am

‘Wind Energy and Electricity Prices’, a comprehensive assessment of studies of the impact of wind energy on electricity pr...

@BarackObama: "We can't just drill our way out ...

treehugger.com 06 May '11, 6pm

"We can't just drill our way out of the problem," Obama said during an energy policy speech in Indiana Friday. "If we're s...

12.4 MW: Conergy builds another solar park in T...

renewableenergyworld.com 27 Apr '11, 5pm

Hamburg / Singapore / Bangkok, 26 April 2011 – With the 12.4 megawatt solar park in Nakhon Pathom province, Conergy is bui...

Advanced Energy® Utility Solar Inverters Select...

renewableenergyworld.com 03 May '11, 1pm

FORT COLLINS, Colo., May 02, 2011 —Advanced Energy Industries, Inc. (Nasdaq: AEIS), today announced that its Solaron® PV i...

Top Ten Solar Power States

ecogeek.org 29 Apr '11, 10pm

Pennsylvania and North Carolina were interesting additions, as solar programs in other areas, like the Southwest, have got...

Top Ten Solar Power States

ecogeek.org 29 Apr '11, 10pm

Pennsylvania and North Carolina were interesting additions, as solar programs in other areas, like the Southwest, have got...