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Hydroelectric

The three young inventors of the Pluvia system, which uses rainwater runoff to generate el...

When we complain about the rain, other people will often say "Yeah, but it's good for the plants." Well, thanks to a microturbine-based system created by three students from the Technological University of Mexico, it's now also being used to generate electricity for use in low-income homes.  Read More

The HydroBee generates electricity using the current of a stream or river

There are already plenty of gadgets that allow people to charge their mobile devices while off the grid. Most of those products utilize solar power, while a few have gone the thermoelectric route. The HydroBee, however, generates electricity using the power of flowing water – think of it as a portable hydroelectric station.  Read More

The floating prison concept is not just self-sufficient, but actually creates electricity ...

However efficient a prison may be, it still typically expends significant energy resources. But what if a prison could actually create power, rather than just consume it? That's the thinking behind lecturer in architecture Dr. Margot Krasojevic's futuristic offshore floating Hydroelectric Waterfall Prison concept, which isn't just self-sustaining, but produces excess energy for homes on the mainland too.  Read More

By exploiting pressure at the seabed, researchers hope to create stores of energy at the o...

"Imagine opening a hatch in a submarine under water. The water will flow into the submarine with enormous force. It is precisely this energy potential we want to utilize." This is how German engineer Rainer Schramm describes his idea for storing energy under the sea. By using surplus energy to pump water out of a tank at the seabed, the water is simply let back in again when there's an energy shortfall, driving turbines as it rushes in. The deeper the tank, the more power is generated.  Read More

The Cappa compact hydropower generator can deliver 250 W of electricity

Despite being the most widely used form of renewable energy worldwide, hydroelectricity is generally reserved for large-scale commercial installations built around massive dams. Japanese company Ibasei has shrunk things down and removed the need to build a dam with its Cappa compact hydropower generator – a system that's designed to be installed along a river or waterway.  Read More

The Strait Power turbine inspired by the basking shark

Studying the bumpy protrusions on the fins of humpback whales has already led to more efficient wind and tidal power turbines and now nature is once again the source of inspiration for a new and more efficient hydroelectric turbine. The latest source of biomimicry is the basking shark, which industrial design student Anthony Reale has borrowed from to create "strait power," a water-powered turbine generator that tests have shown is 40 percent more efficient than current designs.  Read More

According to a new study, 100 percent of the world's energy needs can be met by renewable ...

Here at Gizmag we cover a seemingly endless stream of renewable energy technologies designed to wean us off our reliance on fossil fuels and improve the health of the planet. As important as such developments are, for these technologies to have an impact they must of course be implemented – and on a large scale. What has been sorely lacking is a plan to accomplish such a Herculean feat. Now researchers from the University of California-Davis and Stanford University have published a study that details one scenario to completely convert the world to clean, renewable energy sources – and they say it could be done in 20 to 40 years using technology available today at costs comparable to fossil fuel-based energy.  Read More

Bourne Energy's Backpack Power Plant is ultra-portable at under 3 feet long and weighing l...

Hydroelectric power specialist Bourne Energy has developed a human-portable hydroelectric generator which can create clean, quiet power from any stream deeper than four feet. The "Backpack Power Plant", which joins the company's Riverstar, Oceanstar and Tidalstar designs, is aimed at bringing cheap, practical energy technology to remote areas.  Read More

The Oyster wave energy device was launched this week by Scotland's First Minister Alex Sal...

Rounding off a big week in renewable energy is news that the world’s largest working hydro-electric wave energy device has been officially launched in Scotland. Known as Oyster, the device, stationed at the European Marine Energy Center (EMEC) Billia Croo site near Stromness, was installed this year and is, at present, the world’s only hydro-electric wave energy device which is producing power.  Read More

Oyster® wave energy conversion system

A new milestone for marine energy was achieved recently when UK based Wave and Tidal Technologies company Aquamarine Power Ltd signed a 1,000 MW (1 GW) Development Agreement with the renewable energy development division of Scottish and Southern Energy, Airtricity. Aquamarimes's Wave Power device, called Oyster, is a near shore hydroelectric wave power system. Still at the full scale prototype stage, the Oyster is based around a large movable buoyant barrier structure that is mounted on the seabed in depths of 10 – 12 m (33 – 40 ft) and pivots like a gate.  Read More

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