Here’s the at home test, push a plastic cup that’s upside down into water.  Gravity working on the mass of the displaced water is trying to push the cup back up, that’s buoyancy.  Simple enough, and there is a wealth of places to do this, wells, ponds, lakes, standpipes, water heaters, anywhere that gravity can [...]

Scottish Power Renewables (SPR) installation of a 1MW HS1000 tidal turbine developed by Andritz Hydro Hammerfest, installed in December 2011 has since been undergoing tests in the tidal waters around Orkney. The test device located off Orkney is providing electricity for homes and businesses on the northern Orkney island of Eday to prove that the [...]

Pumping Back Some Power

February 17, 2012 | 3 Comments

Worldwide industry and governments pump water and gravity takes the energy back as water flows.  It’s a huge field for energy recuperation. Hydrovolts, a hydrokinetic turbine company has made news for its innovative hydrokinetic turbine using software from Autodesk, Inc. for recuperating energy.  Hydrovolts big advantage is the price point and installation.  The smaller models [...]

At Stanford University researchers have developed a “rechargeable battery” that uses freshwater and seawater to create electricity. Aided by nanotechnology, the battery employs the difference in salinity between fresh and saltwater to generate a current. A power station might be built wherever a river flows into the ocean. Yi Cui, Associate Professor of Materials Science [...]

MITs Technology Review has ran a piece on Free Flow Power of Gloucester Massachusetts.  Free Flow’s idea is to set tens of thousands of water flow turbines anchored to the bottom of the Mississippi River that someday could provide more than a gigawatt of renewable energy, enough to power a quarter of a million homes [...]

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