compressed gas Archives – The Green Optimistic green tech news, since 2008 Thu, 05 May 2011 12:19:52 +0000 en-US hourly 1 https://wordpress.org/?v=7.0 2667534 Company Stores Megawatts of Energy In Gravel-Filled Tanks https://www.greenoptimistic.com/phes-isentropic-gravel-energy-storage-20110505/ https://www.greenoptimistic.com/phes-isentropic-gravel-energy-storage-20110505/#respond Thu, 05 May 2011 12:19:52 +0000 https://www.greenoptimistic.com/?p=18446 In a couple of years, utilities will do just about anything to be able to store excess power coming from their future renewable sources, such as wind or solar. The good news is that lately several solutions have emerged from privately-funded startups. One of the solutions found that storing energy inside gravel-filled containers is a good idea, and Isentropic Energy, its creator, is really going to build a prototype.

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]]> https://www.greenoptimistic.com/phes-isentropic-gravel-energy-storage-20110505/feed/ 0 18446 Hydraulic Regenerative Braking Saving 52.7% Fuel in BMW 530i https://www.greenoptimistic.com/hydraulic-regenerative-braking-saving-527-fuel-in-bmw-530i-20090226/ https://www.greenoptimistic.com/hydraulic-regenerative-braking-saving-527-fuel-in-bmw-530i-20090226/#comments Thu, 26 Feb 2009 06:35:27 +0000 https://www.greenoptimistic.com/?p=2724 Who said a car has to be electric to be called a "hybrid"? Artemis Intelligent Power has converted a BMW 530i to mechanically capture the energy resulted from braking (aka "regenerative braking"), and use it in an electrically-hybridized car fashion.

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