Renewable Energy

HyperSolar claims it is developing a zero carbon method of producing hydrogen gas from wastewater by harnessing solar energy. Hydrogen gas is a clean source of fuel in that, theoretically at least, the only waste product is water. But hydrogen gas does not occur naturally on Earth, and requires energy to create. Typically that energy comes from traditional, carbon dioxide-emitting sources, rendering hydrogen fuel rather less environmentally friendly than it has the potential to be. HyperSolar's work may mean truly clean, renewable hydrogen fuel could be a commercial reality sooner than we might have imagined. Read More

Spain's ULMA Agrícola consortium and Tecnalia research center have developed a new type of photovoltaic solar panel for greenhouses that can generate electricity without an adverse effect on the crops grown within, while additionally providing cooling in summer. The system is designed to exploit the annual oscillation - the variation in the height of the sun's path across the sky over the course of the year. In theory, no solar radiation is compromised over winter, but surplus radiation can be diverted to electricity-generation during summer. Read More

Concentrated Solar Power (CSP) plants, such as the Gemsolar and PS10 plants in Spain, use arrays of mirrors (or heliostats) to focus a large area of the Sun's rays onto a small area, where the concentrated light is converted to heat that is used to generate electricity. While CSP has gained popularity in recent years with numerous plants being built around the world, they require a large area to generate the amounts of electricity needed to make them economically viable. Taking inspiration from the sunflower, researchers have devised a more efficient design that would allow such plants to be constructed on a much smaller area. Read More

We cast a wide net over all types of new and emerging technologies here at Gizmag.com - some save us time, some keep us connected, some help us stay healthy and some are just plain fun, but at the core of what we cover are those discoveries and innovations which have the potential to impact the fortunes of the human race as a whole and make a difference to the future of our planet. So with the calender having rolled over into another year, it's an ideal time to take a look back at some of the most significant and far-reaching breakthroughs that we saw during 2011. Read More

A team of researchers from the University of Notre Dame in Indiana is reporting the creation of a "solar paint" that could mark an important milestone on the road to widespread implementation of renewable energy technology. Although the new material is still a long way off the conversion efficiencies of commercial silicon solar cells, the researchers say it is cheap to make and can be produced in large quantities. Read More

Wind-power has rapidly evolved over the last decade to become a key part of the alternative energy mix with towering rows of turbines now dotting horizons all over the globe. One of the drawbacks to the conventional windmill approach is that they are still low to the ground, so why not go to where the winds are stronger and more consistent - up. Like the Magenn Air Rotor System, KiteGen technology is aiming to do just that. The system generates energy by guiding tethered kites over a predefined flight path in order to rotate a ground based turbine and, while only in the testing and planning phases, it looks to be a promising solution. Read More

Recently the Cleantech Group, with the assistance of an advisory panel of corporate executives, sat down to decide upon the third annual Global Cleantech 100: the hundred "most promising and innovative" clean technology companies of 2011. The listed companies span a range of industries, and though solar energy firms, chemical recyclers, LED manufacturers and energy-monitoring software programmers certainly aren't under-represented, many companies in the hundred are defined by a single product or idea. Gizmag scoured the Cleantech 100 to find what we thought were the ten most innovative companies. Read More

There's no doubt that sources of renewable energy such as wind and solar are critical to a clean energy future, but just as important is a way to store the energy generated for use when the sun isn't shining and the wind isn't blowing. Researchers at Stanford University are reporting the development of a new high-power electrode that is so cheap, durable and efficient that it could enable the creation of batteries that are big enough and economical enough for large-scale storage of renewable energy on the grid. Read More

Although it can be considered as a basic human need alongside food, water and shelter, 1.6 billion people all over the world have no access to stable and safe source of light. It's a situation that two bright young Architecture graduates are aiming to combat with the LuminAID solar-powered lantern. Like the Solar Pebble initiative, the LuminAID lantern is designed to address dependence on kerosene lamps in the developing world and its extremely lightweight and easy to transport inflatable design is also targeted at use in disaster relief situations ... plus it makes a very handy addition to your camping kit. Read More