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Renewable Energy

GE has found a way to extend wind turbine rotor blades without replacing them

Sometimes progress can be its own worst enemy, with early adopters being stuck with obsolete equipment that leaves them with the choice of living with out-dated technology or an expensive replacement. The green energy field isn’t immune to this, and as part of a US$2 million renewable energy project, GE has developed a way to make smaller, less efficient wind turbines into bigger more efficient ones with a bit of plastic (or carbon composite) surgery.  Read More

Is space-based solar power the answer to our energy needs? JAXA envisions solar satellites...

Space-based solar power seems like an idea from a Star Trek script, but given the uncertain future of its power generation industry, Japan stands to gain as much as anyone by exploring this potential source of renewable energy. The disaster at Fukushima, limited access to fossil fuels and advances in technology has, at least in the eyes of the Japan Aerospace Exploration Agency (JAXA), added further weight to the notion of a space-based solar power system. The agency is developing a complex roadmap involving a 1 GW extraterrestrial solar farm, a microwave beam and a man-made island in the Tokyo harbor which could be used collect solar energy in space and supply power to Earth by 2040.  Read More

Powerhouse Kjørbo has been renovated to become the 'world's most environmentally-friendly ...

An office building in Norway has been renovated to produce more energy that it consumes. Powerhouse Kjørbo is located near Oslo, and according to Powerhouse, it is Norway’s first energy-positive building and the first in the world to be renovated into an energy-positive structure.  Read More

The installation on Jaguar Land Rover's new plant in South Staffordshire is the largest ro...

The rooftops of automotive manufacturing plants have proven fertile ground for solar arrays with Audi, Ferrari and Renault installing extensive fields of solar panels at their respective facilities. Now Jaguar Land Rover has got on board with the largest rooftop solar panel array in the UK sprouting from its new Engine Manufacturing Centre in South Staffordshire.  Read More

Honda estimates its smart home will generate a surplus of 2.6 MWh of electricity

With homes and light-vehicles accounting for roughly 44 percent of total greenhouse gases emitted in the US, neutralizing these emissions would certainly go a long way towards a clean energy future. What if these sources of pollution could not only be nullified, but play an active role in reducing our environmental footprint? Such is the thinking behind the Honda Smart Home US unveiled last week, which generates enough solar energy to power both car and home, with a little left over to feed back into the grid.  Read More

Harvard physicists Federico Capasso (left) and Steven J. Byrnes (right) are part of a team...

Could it one day be possible to generate electricity from the loss of heat from Earth to outer space? A group of Harvard engineers believe so and have theorized something of a reverse photovoltaic cell to do just this. The key is using the flow of energy away from our planet to generate voltage, rather than using incoming energy as in existing solar technologies.  Read More

The design of the Orchid House was inspired by Tawian's innovative greenhouse technologies...

In high-density areas like the Taiwanese capital of Taipei, people have long looked to expand vertically to make use of the limited land, resulting in a lack of vegetation, high humidity and high energy usage. According to Unicode, a team of Taiwanese architects and designers, 50 percent of the county's housing constructions are either common multiple-story rowhouses or larger duplex apartment buildings, many of which have illegal makeshift shelters on their rooftops to provide extra living space. Unicode has developed a concept house which would give these shelters a greenhouse-inspired makeover, shifting reliance to renewable energy sources and improving Taipei's sustainability in the process.  Read More

A rubber mat forms the 'carpet,' and sits atop a grid of hydraulic actuators, cylinders an...

Many organizations around the world are looking at ways to harness the power of waves as a renewable energy source, but none are covering quite the same ground as a team of engineers from the University of California (UC), Berkeley. The seafloor carpet, a system inspired by the wave absorbing abilities of a muddy seabed, has taken exploring the potential of wave power to some intriguing new depths.  Read More

The world's largest solar thermal generation plant, Ivanpah Solar Electric Generating Syst...

After three years of construction, the Ivanpah Solar Electric Generating System (ISEGS) is now operational. The 392 MW plant, funded by NRG, Google, and BrightSource Energy, is expected to generate enough electricity to power 140,000 homes, each year. NRG announced last week that each of the plant's three units is now supplying electricity to California’s grid.  Read More

The Parasol system uses passive radar sensors and mathematical algorithms to determine if ...

With aspirations to claim 80 percent of its power from renewable sources by the 2050, it follows that Germany is taking a proactive approach to its clean energy transformation. Wind farms, while set to play an important part in achieving this goal, often meet impassioned opposition from disgruntled neighbors piqued by their perpetually blinking beacons. In an effort to address this issue, researchers have developed a sensor system for wind turbines which detects nearby aircraft, switching on a beacon warning system only as they approach.  Read More

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