by Andrew Michler

The dream of going wireless with a laptop or iPad becomes pretty meaningless when reality hits and you’re left with a battery drained to nothing. But Voltaic‘s new solar backpack brings things back into balance, giving you the option to recharge your laptop and other gadgets even if the sun isn’t shining! Incorporating a battery with a sewn in 10 watt monocrystal solar module, the setup has two power ports and four voltage settings connected to the 60 watt battery. The new backpack gives you the ability to recharge just about any portable device whenever you need to.

by Marc Carter

London designer Omer Sagiv created this solar-powered concept car that looks like it’s straight out of the latest sci-fi movie. The concept car is referred to as the SPV (Solar Power Vehicle) and Sagiv states that it’s made of aluminum with flexible thin modules fixed to it and that the shaft in the center of the SPV functions as an in-built cooling system. The aerodynamic shape of the concept allows it to collect energy in any sunny environment. Even better, the concept can also use the extra energy that it collects from its solar panels to power its owner’s house!

by Ovidiu Sandru

A team of scientists at the University of Cambridge have developed a new kind of solar cell which uses a phenomenon called “singlet exciton fission” to extract two electrons with the energy of a single photon hitting the semiconductor. Currently available silicon solar cells can only extract one electron, so this would give solar cells a 25 percent boost in efficiency.

Cambridge’s new solar cell has been named “hybrid,” and its creators say it’s able to achieve a 44 percent efficiency, 10 percent higher than what the most cutting edge technology can, 34 percent.

By Kevin Bullis

Semprius, a startup that makes miniscule solar cells capable of capturing concentrated sunlight without costly cooling systems, announced this week that it had made the world’s most efficient solar panel.

The company’s solar panels use tiny solar cells made of gallium arsenide—the record-breaking solar module contains hundreds of such solar cells, each about the width of a line drawn by a ball-point pen, arranged under lenses that concentrate sunlight 1,100 times.

Gallium arsenide is far better at absorbing sunlight than silicon, the material used in most solar cells, but it’s also more expensive. Furthermore, although concentrated solar modules use less semiconducting material, they usually require expensive optics, cooling systems, and tracking systems to keep them aimed at the sun. Semprius’s microscaled solar cells are inherently much better at dissipating heat, making them cheaper.

What if generating solar energy at home required little more than mixing some grass clippings with inexpensive chemicals? That’s exactly what MIT researcher Andreas Mershinhas found to be the case. The scientist says creating a solar cell could be as easy as mixing any green organic material (grass clippings, agricultural waste) with a bag of custom chemicals and painting the mixture on a roof. Once the efficiency of Mershin’s system is improved, this type of solar technology could make cheap energy available in rural places and developing countries where people don’t have access to affordable energy. Read on to see a video of Mershin’s findings

Solar power is one of the greenest sources of energy. We have seen solar powered gadgets, cars, houses etc. but this concept by Matteo Straforini is a solar powered info point where you can get information about a city. It is an urban design to make easy and ergonomic consulting. The solar panels are installed on the sail of the structure and it can rotate, following the sun’s inclination completing a rotation of 180°, just like a sunflower. A touch screen on the dashboard allows the user to access the menu, which contains different categories for browsing.

The Ecovila, located on the coast of São Paulo, is the first residential structure in Brazil to install solar panels that follow the motion of the sun. The solar system, along with two wind turbines, will provide enough energy for lighting and water pumping to support the entire village consisting of 58 houses. The system installed has the capacity to capture 350,000 liters of rainwater, and the design of the village boasts cross ventilation, 15 square meters of green area per resident, and an organic garden.

Designer Omer Sagiv’s futuristic Solar Powered Vehicle (SPV) is an ideal vehicle for long rides in deserts or other open lands. The SPV is a typical solar vehicle design. The aluminum structure mounts plenty of flexible thin film modules, which can generate much energy for long rides. In form, the SPV almost resembles Nuon solar car, developed by Delft University.

Maricopa County, Arizona is set to play host to a 125 MW photovoltaic solar power plant, according to an announcement on Tuesday from Fluor Corporation. The company has won the separate contracts to build and maintain the facility, which upon completion will fleetingly join the ranks of the the world’s largest photovoltaic solar farms. The project, known as Arlington Valley Solar Energy II (AVSE II) will be built on 1.8 square miles (4.7 sq. km) near to the Arlington Valley Combined Cycle Facility, a 577 MW natural gas plant also designed and built by Fluor.

The UK’s only Green MP, Caroline Lucas, takes to the pages of The Guardian to launch a broadside against the UK Government’s investment policy in relation to solar energy.

The UK Government this week lost an appeal in the High Court against a lower court’s ruling that its retrospective attempt to change the solar feed-in tariff rates imposed by the previous Labour Government was “legally flawed”. The Cameron Government had tried to reduce the rates before the agreed consultation period had expired.

The court’s decision is considered to be a victory for the UK solar industry however the Department of Energy and Climate Change (Decc) is threatening to take the case to the Supreme Court. The future of solar investment therefore remains in an unhealthy limbo.

Intriguingly the Hon. Ms Lucas touches on a theme returned to often in these pages: certainty.

Last October, the SolarWorld GT solar-powered car set out from Darwin, Australia on a drive around the world. It has since driven 3,001 kilometers (1,865 miles) across Australia, logged 1,947 km (1,210 miles) crossing New Zealand and been shipped across the Pacific Ocean. This Friday, it will embark on the U.S. leg of its journey, as it sets out across America from the University of California, Santa Barbara.

With large cargo freighters being a major source of CO2 emissions worldwide it’s been encouraging to see various efforts to make such vessels more efficient. In recent years we’ve seen the development of the world’s biggest container ship to cut CO2 emissions per container moved, air bubbles used to cut the friction between a ship’s hull and the ocean, and even plans to return to the use of sails to cut fuel use. Now Nissan has launched an energy efficient coastal car carrier called the Nichio Maru that employs solar panels, LED lighting, a low friction hull coating hull and an electronically controlled diesel engine to cut fuel consumption.