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A team at Stanford and MIT has devised a novel configuration that combines silicon - the leading solar cell semiconductor - and perovskite - a cheap mineral, only recently exploited for converting solar energy - to form two different layers of sunlight-absorbing material in order to harness energy across a wider spectrum. While performance at this stage is not impressive (it's equally as good or bad as conventional single-layer silicon cells), researchers believe they have methods at their disposal that could double efficiency. If that were to happen, than these could be the cheap, but efficient solar cells we've all been waiting for.
Tesla Motors are out to change the world - and they're doing it fast, and in style. Like many other of their projects, this one seemed to pop up out of nowhere: Tesla have designed a battery that can power your home and even larger utility buildings. In other words - it could take your house out of the grid.
China is the largest polluter in the world at the moment, and they’re also reaping what they sew. But you can’t accuse the Chinese for not trying to right their ways – at least some of them; in an effort to mitigate the ridiculous amounts of smog that clouds some of China’s cities, scientists have […]
Researchers at Brown University have found a cheaper and easier way to create hybrid perovskites, enabling engineers to develop more affordable and efficient solar cells. Perovskite is a calcium titanium oxide mineral composed of calcium titanate (CaTiO3). The mineral has received much attention in recent years as artificial perovskite crystals have increasingly been used in solar cells. Perovskite films in solar cells are excellent light absorbers, but they until now, they were more expensive to fabric and only created small crystals.
University of Michigan researchers have devised what looks like the world's first fully transparent solar cell. Think of all of those tall glass buildings; wouldn't it be nice if all that incoming solar energy was harvested somehow? Likewise, why not let your smartphone charge up a bit while it's taking a tan. Of course this isn't a new idea, but previous attempts are rather unattractive because the compromise makes windows too shady or dark. After all, the purpose of a window is to let light in, not make energy. Ideally, you'd want them harness energy as well, complementary. The new system devised at UM is exciting because it offers exactly this: energy generation, with no compromise in visibility.
The central American republic of Nicaragua is nothing short of a renewable energy paradise: great winds, a scorching tropical sun and 19 volcanoes that can be tapped for geothermal. Not too long ago, the country had been enslaved by its over-dependence on foreign oil imports, since it practically has no performing oil rigs. Since 2005, […]
Solar power is one of the most efficient yet clean sources of energy we have access to. There are no increased fuel costs or dependencies, no ties to pollutants, and it’s both reliable and affordable. Of course, in order to harness solar power you need access to specific technology. This tech relies on either small-scale […]
The world's first grid-connected wave power station has just been activated off the coast of Australia. Taking energy directly from the waves and sending them to the grid is a remarkable achievement which will hopefully be replicated in Australia, as well as in other parts of the world.
As global oil prices continue to drastically fluctuate up and down over the years, the Kingdom of Jordan has announced that all of their mosques will soon run on solar energy, in an attempt to save money and promote sustainable development.
The Dutch Windwheel is a concept for a sustainable landmark that will not only generate wind energy silently, but also capture rainwater, recycle tap water, produce biogas - and most importantly, house 72 apartments. It will also have some rotating cabins providing a brilliant view of the Dutch city of Rotterdam.
In 2014, Germany installed 543 offshore wind turbines, reaching a capacity of 2.35 gigawatts (GW), getting closer to their plans of having 6.5 GW of wind energy infrastructure installed and connected by 2020.
According to a report issued by the Solar Foundation, jobs in the solar industry were added at a rate 20 times that of the national average. In absolute numbers, 31,000 solar jobs were added in the U.S. between November 2013 and November 2014, bringing the total number of employees to 173,807, 87 percent more than five years ago. […]
Forget potato clocks – this is the real deal. Plant-e, a start-up company in the Netherlands created promising new technology which harvest electricity from plants. So far this month, more than 300 LED lights were illuminated by the Dutch company, in a promising proof-of-concept. They also demonstrated that they could power up cell phones and Wi-Fis. […]
If the leaf really works as the hype would have us believe, then it's really a fantastic display of ingenuity.
An open letter authored by more than 65 biologists calls for conservation groups and efforts to take a step back and rethink their agenda concerning nuclear power, heavily criticized in the past few years following the Fukushima incident. With all its risks and shortcomings, the authors argue, nuclear power is still the most cost-effective “green” solution […]
Amazingly, 19 percent of all Australian households have solar panels or solar water heaters installed, according to the Australian Bureau of Statistic (ABS). The statistic is even more astonishing when you consider only three years ago five percent of the households had rooftop solar panels. A land of sunshine Of the 19 per cent, 14 […]
We’ve previously told you how our ancestors’ adaptation to metabolizing alcohol which first happened some 10 million years ago may have been essential to their survival. There’s more to it though. The same enzyme that metabolizes alcohol, dehydrogenase (ADH4), may be eventually used to transform CO2 into alcohol, which could be later used as a […]
Australian solar researchers have converted over 40 percent of solar light’s energy into electricity, the highest efficiency ever reported by any team for this kind of system. The key for the design is a custom filter which captures sunlight that is normally wasted by commercial solar cells on tower. “This is the highest efficiency ever reported […]
Among the more common arguments against wind turbines you usually have noise and ugliness. Personally, I really don’t find wind turbines ugly and studies have found that generally wind turbines are very quiet but hey – this is the general perception. For these reasons, French engineers have spent three years developing beautiful and quiet urban versions of […]
A team of UK researchers led by none other but Nobel Laureate Andre Geim – one of persons involved in graphene’s discovery in 2004 – has shown that the wondrous two dimensional material graphene can used as a proton exchange membrane in fuel cells. The find took everybody by surprise since no one expected graphene could […]
Solar cell technology has improved dramatically over the past couple of year, yet it will be a long time before multi-junction cells – then kind that can reach efficiency well over 40% – will become affordable to small home owners or even large scale installation. New methods are always explored, however, each with its own angle […]
Apart from both being shiny, it’s hard to see any connection between a Blu-ray disk and a solar panel. Northwestern University researchers thought outside the box, however, and used the disk’s tiny stamped grooves and pits to make molds for solar panels. Because of the resulting structure’s geometry, the solar cells were able to absorb […]
It’s the main argument against renewable energy – sure, they’re environmentally friendly, they’re sustainable, they have very little emissions… but they’re expensive. But while that is already no longer true in many parts of the world, it may also not be true in America – where solar and wind energy are starting to overcome conventional fuels […]
It may be gloomy, windy and rainy, but the Scottish weather may have its upsides too. in October, Scotland generated enough power from wind to power up every single home in Scotland and a bit more. “Wind turbines alone generated an estimated 982,842MWh of electricity, enough to power 3,045,000 homes in the UK – equivalent […]
Researchers at University of Utah have demonstrated for the first time a working biological fuel cell that uses enzymes to convert jet fuel into electricity; all at room temperature. Fuel cells are much cleaner and efficient at producing energy than internal combustion engines – theoretically, fuel cells can be up to four times more efficient since […]
Some of us like to think that the energy needs of the future will be supplied by clean and renewable energy sources, but a recent report released by the Manhattan Institute for Policy Research leads us through the mist and shows a cruel reality: coal, the dominant energy source in the world today, will continue […]
We keep hearing more about developments made in the photovoltaic field, but we have to keep in mind that this is not the only way in which solar energy can be harvested and used. A multidisciplinary engineering team at the University of California, San Diego developed a new nanoparticle-based material for concentrating solar power plants, absorbing […]
Denmark’s climate minister says that the country should ban coal use by 2025 to make the Nordic nation a leader in fighting global warming; other measures he encourages are using bicycles and improving the wind energy infrastructure. Denmark is already one of the world’s leaders when it comes to green energy. They have considerable oil and natural gas […]
Developing countries are catching up fast and there’s a lot the rich can learn, especially in terms of energy. A study of 55 nations found that developing countries like China, Brazil, South Africa, Uruguay and Kenya are installing renewable energy projects at almost twice the rate of developed nations. In many of these countries renewable energy […]
Germany has taken a pioneering role in terms of renewable energy, in Europa and even worldwide. Many countries are now negotiating or even applying renewable energy systems, but in Germany the situation is different – most of renewables are owned by individuals (as opposed to companies), and most of them are produced in the rural […]
Friday morning, EU leaders finally reached an agreement for its 2030 energy target – member states have all agreed to reduce their green house gas emissions by 40%. Following the announcement, industry representatives voiced concerns that the decisions will affect the EU’s economy and competitiveness, while environmental groups on the other hand criticized the terms […]
Kenya has announced the launch the world’s largest single turbine geothermal power plant, which will add 140 Megawatts (MW) to the country’s national electricity grid. The project will bring much needed cheap energy to an impoverished country and fuel development in the area. A suitable area The Olkaria Area is an region located immediately to the […]
European Union leaders are currently meeting in Brussels to discuss the terms under which the Union will set its 2030 energy targets. Right now on the table, the plan is to cut CO2 emissions by 40% from 1990 levels by raising energy efficiency and the renewable energy slice. Such a convention is never without compromise, however. […]
A trio of newly published studies showed once again that natural gas is not a clean energy bridge – the studies highlighting the various problems associated with natural gas. Firstly, it was shown that emissions databases underestimate the methane released from fossil-fuel extraction in the U.S. Southwest. “A global gas boom is not a replacement for […]
Lockheed Martin has officially entered the race to achieve nuclear fusion at room temperature on 15 October, laying out a 10-year roadmap to commercialize a reactor that would fit on the back of a lorry. The company has been working on the project for several years, but they’ve been extremely secretive about it until now, when […]
A team at University of Cambridge have harvested so-called ‘dark’ spin-triplet excitons with close to 100% efficiency, a breakthrough achievement which could vastly improve the efficiency of hybrid solar cells that use both organic and inorganic semiconductor junctions. An exciting solar future Excitons are basically electrons coupled to a hole (they’re attracted to each other and […]
Researchers at MIT report they’ve developed a novel material that can absorb almost all incoming wavelengths of light and convert the energy into heat. The radiated heat emitted by the material can then be collected by photovoltaics for later conversion into electricity. The material is cheap to make using currently available manufacturing processes, can absorb […]
Every year, the Land Art Generator Initiative (LAGI) in Copenhagen welcomes renowned designers and engineers to submit designs that integrates renewable energy in harmony with citizens, nature, and the urban environment. This year’s winning entry is a fantastic solar power array that takes the form of a hourglass, unveiled by Argentina-based designer Santiago Muros Cortés. The project, if […]
The UK’s first floating solar farm has been unveiled in Berkshire; the array features 800 photovoltaic panels and has a capacity of 200W. The project cost £250,000 ($405,400) and has been installed on a reservoir at Sheeplands Farm near Wargrave. Solar energy provides many advantages, but also raises many problems. Among those problems is land area […]
Given the shale boom, the United States has now become the world’s leading natural gas producer. Because it only releases 50% as much emissions for the same equivalent amount of energy produced by oil or coal, many have herald it as a cleaner source of fossil energy, whose widespread introduction might help mitigate global warming. […]
It may seem clear, but you need a study to have certainty: public transportation is cheap and “green”. A recent research concluded that effective public transit systems can provide a cost-effective solution to fighting global change at a global level. If public transits are improved throughout the entire world, the report shows that urban transportation could be cut […]
A new method of producing hydrogen has been reported by researchers at University of Glasgow that’s 30 times faster than current state-of-the-art methods, providing yet another advance that might one day lead to a sustainable hydrogen based economy. There’s only so much that renewable energy can grow with today’s infrastructure due to base load considerations. […]
Researchers from Stanford have found a way to split water into oxygen and hydrogen using very little energy; the hydrogen they obtain could be used to power fuel cells in zero-emissions vehicles. I’m quite excited for cars that run on hydrogen, which are set to hit the market in 2015; but while they are always presented as […]
For billions of years, nature has been harnessing the energy from the sun through photosynthesis. This way, plants, algae and cyanobacteria use sunlight to split water and produce energy-rich chemical compounds from carbon dioxide (CO2). This energy is then transferred to animal that eat these plants, and animals that eat plant-eating animals, including us humans. It’s […]
We’re used to reporting year after year how China’s coal consumption is increasing and how they are polluting more and more. But this is the first year in over 2 decades when the number hasn’t increased. Could China’s coal boom be over? While positive signs have been emerging from China for well over a year, […]
Lead-acid car batteries used to be the norm, but luckily we’re seeing a massive shift towards more efficient and environmentally friendly alternatives like lithium-ion. Still, there are fleets of hundreds of millions of cars that still employ these archaic and toxic batteries. Typically, manufacturers try to have car owners bring their old lead-acid batteries, which […]
I was reading this morning how excited some journalists were in reporting “the biggest oil discovery in decades”, and I got a little curios: how big is it? According to US oil company Apache, the field could have potentially up to 300 million barrels of oil in place – Australia gets a lot of oil, […]
Even though coal is still Germany's number one energy source, renewable energy is developing incredibly fast, with wind and solar energy catching up fast. If the trend continues, they will soon become the dominant energy source.
A new study conducted by Stanford Researchers demonstrates a practical “roadmap” for converting California’s all-purpose energy infrastructure over to renewable sources by 2050. The paper proposes running the state on a mixture of wind, water and sunlight (WWS). To make things even more interesting, the paper does it all with available technologies – of course, […]
Researchers at University of Sheffield demonstrate a perovskite spray-on solar cell for the first time. Also, this is the first time rated efficiency for a spray-on solar cell tops two figures in efficiency, marking an important milestone and breakthrough in the field.
