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New imaging techniques might revolutionize the technologies currently used to capture uranium from seawater, as researchers gain a better understanding of the way the compounds that bind the atoms interact with them.
If we want to transition to a carbon free economy, renewable energy has to be pivotal – but no matter how you look at the problem, the bottom line is always the same: efficiency. Solar only generates energy when the sun is up, the same goes for wind… there’s a big reliability issue. With this […]
Citizens were against installing a solar farm because it would suck all the energy from the sun -- so plants will die.
A possible game changer – 120 country alliance spearheaded by India and supported by France has been announced, with the purpose of promoting solar energy in developing countries. Many developing countries enjoy sun-rich areas, but they lack the technology and financial capabilities to make full use of that potential. With that in mind, India’s prime […]
The eyes of the world are set on Paris, as the COP21 climate summit started today with the ambitious goal of achieving a legally binding and universal agreement on climate, from all the nations of the world. But while this dance sometimes paces close to the impossible, there are also reasons to be optimistic: world leaders […]
There's an inherent flaw in solar cells: the metal wiring that's quintessential to harnessing the electrons reflects the incoming light, acting like a mirror. Now, must people would brush off this issue and leave it like that. It's a necessary trade off. But a team at Stanford University devised an elegant chemical technique that basically hides the wiring with silicon, away from the light while preserving energy harnessing. Metal wires cover 5 to 10 percent of a solar cell's surface. Now, in the same area more light can be absorbed, hence more electricity generated which jumps the efficiency. Of course, this also means cheaper solar panels -- if only the chemical technique is covered by the recurring costs of increased efficiency.
Starting November 30, the world's leaders will meet in Paris at the UN summit for climate change to discuss a common framework to reduce carbon emissions at a global level. Most countries already have plans set in motion to reduce emissions, either by using energy efficiency and new technology to lower the carbon footprint of their own operations, or use legislation to compel residents and companies to do the same. A lot of big and sizable corporations in the United States have taken matters into their own hands, however, by buying more clean energy and less fossil fuel derived energy, regardless of what the government suggests or coerces.
In many the vast steppes of Mongolia, some things have remained unchanged for centuries. But some things have changed, and big time: according to a new report, almost 3 out of 4 Mongolian nomads are now using solar power. Even if your lifestyle is pretty much Medieval, you can still benefit from advanced technology – that’s […]
While wind and solar are offering more energy than ever to global grids, there is still much work to be done if we want to properly integrate them; one question that always arise is that of energy storage. Sure, you can harvest a lot of sun during the day, but you need to store it for later usage, and that's quite a problem. Now, a Canadian start-up believe they may have found a solution for that, and it's just crazy enough to work: underwater balloons.
A simple yet efficient solution could not only make life easier for millions of refugees worldwide, but also reduce CO2 emissions by 6.85 million tons every year and save a lot of money in the long run: installing solar panels in camps. A consortium of think tanks and NGOs has released a report highlighting that […]
The small Central American nation got rid of its armed forced 65 years ago, and the Ticos are a happier people for it. Now, Costa Rica - home to four and a half million people - is setting the world a new example in human values: for 255 days it has managed its resident's energy needs with little fossil fuel use.
Before the official talks at the UN climate change summit start next month in Paris, each nation was invited to submit a pledge in which it details how it plans to reduce its carbon emissions. The plan is for the world's leaders to reach a sensible agreement such that the climate might avert warming by more than 2 degrees Celsius by 2100 past pre-industrial levels. The climate is already 0.9 degrees Celsius warmer. More than 155 countries have responded to the call, amounting to 128 Intended Nationally Determined Contributions (INDCs). Each country outlined the progress it wants to make differently, depending on how many resources they can dispose of and, of course, how serious they take the issue
The Scottish government announced that it approved the construction of UK's first, and the world's largest floating offshore wind farm.
For decades, scientists have been discussing about the possibility of a clean, virtually inexhaustible source of energy – and they still are. But with the work of researchers from the Max Planck Institute for Plasma Physics, that may soon change, and the way we think of energy might change. After over 1.1 million construction hours, they […]
Morocco is poised to become a solar superpower, as they revealed plans for the largest concentrated solar power plant, powered by the Saharan sun.
The District of Columbia Water and Sewer Authority recently unveiled a $470 million waste-to-energy system that converts solid sludge (we generally call that human poop) to clean energy.
China has set up an ambitious goal of getting 5 million or more electric cars on the streets, and this is not just a pipe dream - the government is taking active measures to speed up the production by building more charging stations.
The Scandinavian nation has set its mind on ridding itself of fossils fuels. To this end, the government announced it will increase spending on climate-protection measures for the next year bringing it to $546 million. That might not sound like much but Sweden is a small country which already uses energy very efficiently. It also gets three quarters of its energy from non-fossil fuel sources, mainly nuclear and hydro.
No kidding, Stanford researchers actually showed it's possible to cool solar panels by applying a special coating that reflects some of the heat back into space. The coating, called a photonic crystal cooling system, is transparent. This allows the light to reach the PV cells so these can generate energy, but - crucially - some of the heat is reflected back in space. It's so good that the researchers showed their PV panels can even stay below ambient temperature, which is incredible by itself. If you know a thing or two about solar panels, then you'll remember their efficiency is directly related to temperature. The cooler a panel is, the more of the sun's energy it can convert into electricity. And we're talking about a mere coating, which shouldn't be too difficult to scale. Bit by bit, you if you multiply the extra efficiency by millions of panels you end up with a huge useful energy gain. This may be a game changer.
The world is at an extremely dangerous crossroads: if we keep using non-renewable hydrocarbons and coal the way we have, we'll be rising global temperatures to a point where the consequences are extremely dire, but in many parts of the world, renewable energy is simply not cheap enough, and people don't want to pay for it. Faced with this conundrum, we may have an unexpected ally that could solve our problems: nuclear energy.
Hydrogen is a great medium for storing energy. It can be used as an alternative to batteries to store the excess energy from renewable energy systems like solar panels or wind turbines, and can be released from a tank to power a vehicle equipped with fuel cells. More than a decade ago, these prospects hyped the so called "hydrogen economy". Governments and funding agencies drew up ambitious plans to develop cheaper fuel cells and to enable cars to store practicable quantities of hydrogen. In 2003, President George Bush committed $720 million to the research effort. But eventually... it all turned out to be a pipeline dream mostly because of two shortcomings: hydrogen is very expensive to store and make; from renewable sources at least.
An innovative 'kirigami' design allows solar cells to flex and twist to follow the sun throughout the day. This means 20 to 40 percent more energy per year generate than cells stacked in fixed panels you see on rooftops. The design is based on origami, with the addition of cutting besides from folding.
On an explosive growth trajectory, the total operational solar photovoltaic capacity in the US just passed the 20 GW milestone after 1,393 megawatts of PV were installed last quarter.
An innovative concentrated solar power design called the "Solar Sunflower" was recently demonstrated by Swiss researchers at Airlight Energy and IBM Research in Zurich. The energy generator concentrates 5,000 suns onto a semiconductor chip to generate both electricity and heat at 80% efficiency. This meas roughly 60 times more power generated over the same surface area than a typical roof-mounted solar panel - granted, the parabolic dish array, which is quite big, isn't included. The electricity and hot water generated by one single Solar Sunflower can meet the needs of a couple homes.
One of the largest banks in the world says choosing not to invest in renewable energy and divest from fossil fuel might come at a significant financial cost. Up to $1.8 trillion through 2040 or $44 trillion by 2060, when compared to the business-as-usual model.
India is one of the most polluted countries in the world, but for what it's worth local authorities acknowledge this and are trying to balance their energy mix, currently heavily reliant on fossil fuel. More than 90% of India's energy needs are met by coal, oil and gas. In all this ocean of dirt, particles and toxic fumes, the Cochin International Airport (CIAL) shines like jewel - the first international airport in the world that is 100% served by solar energy.
The Dutch want clean energy, and they’ve made that abundantly clear when 886 citizens sued their government to reduce CO2 emissions; as a result of that, something completely unprecedented (and very exciting) happened: a court in Hague ordered the government to reduce its emissions by at least 25% over the next five years. But then, things […]
The Department of the Navy (DON) announced it will make the largest investment in renewable energy by an federal entity. Its plan is to install a huge 210 megawatt (MW) solar facility - enough to power 80,000 Californian homes - in the Arizona desert, which would serve electricity to 14 US Navy installations. The agreement was signed last month and marks the latest in a slew of measures meant to make the Department of Defense less dependent on oil - not just by the navy, but also the military or air force.
Scientists working at Monash University in Melbourne have developed the most energy-efficient ‘artificial photosynthesis’ method to date. The process relies on running an electrical current through water to separate it into oxygen and hydrogen, and the team behind it say it could be used to power our home on the cheap in just a few years.
Investment in the renewable project is estimated to reach £650m ($1bn), which will be partly funded through aids from the European Commission, and construction works would create around 1,100 jobs. Environmental technology firm Abengoa, based in Spain, along with Japanese industry giant Toshiba will be leading the project for their client, MGT Teesside, subsidiary to the British utility MGT Power.
Hydro-energy is clean, cheap and reliable – in many ways, it’s every man’s dream: you get the reliability of fossil fuels with the eco-friendliness of wind and solar. But hydro also comes at a price, one that we are only recently discovering: it threatens biodiversity and encourages erosion. The removal of a dam on the Elwha […]
Advances in magnet technology have allowed MIT scientists to design a cheaper, more compact, modular and highly efficient fusion reactor that is efficient enough to use commercially. The era of clean, practically inexhaustible energy may be upon us in as little as a decade, scientists report.
Solar-aided power plants could mean less CO2 for a fraction of the costs of solar-only, paving the way for a full-renewable power supply.
Whether we’re talking about a tablet or a phone, a laptop or a music player, what matters most is the battery. And electric cars are no exception from this rule. The problem with new technologies is that there are no infrastructures to sustain them, which makes it unprofitable for the consumer, given that the lack […]
Tony Abbott, the Australian PM has been warned he is putting international investment at risk after ordering the $10 billion Clean Energy Finance Corporation not to finance new wind power. Abbott, who is a firm support of the waning coal industry has escalated his war on renewable energy, attempting to block massive investments. Wind power is […]
Most days are windy in Denmark, but Thursday was unusually so – it was so windy that the country got its entire energy needs and more solely from wind turbines. During the afternoon it was already reported the Nordic nation’s wind turbines were producing 116 per cent of Denmark’s electricity needs, and the figure rose to […]
A simple smartphone app combines the most reliable data and maps on global renewable energy potential, so you can get a better idea what's the right kind of equipment you need or if the investment is warranted in the first place. And it's all for free, too.
Germany is taking some serious strides in its attempt to reduce carbon emissions by 40 percent until 2020: the European country announced that it will shut down several coal-fired plants and move towards more sustainable energy sources. “Coal-fired plants with a capacity of 2.7 gigawatts will be shut down,” said the government sources, who declined to […]
Environmentalists and engineers have often argued against golf courses (especially abandoned golf courses), considering them a waste of space and resources, and for good reason. Golf courses cover huge areas of ground which could be used for something more productive. Now, Japanese company Kyocera is building a huge solar power plant on such an abandoned course.
More job opportunities could be created by investing clean energy sources than fossil fuels.
A new project started by Green Energy Africa in September 2014 has brought solar energy to 2,000 homes in Naiputa county alone, and put new power into the hands of women who sell affordable solar installations.
Converting the power infrastructure to rely on clean, renewable energy seems like a daunting, expensive and some would say, unachievable task. But Mark Z. Jacobson, professor of civil and environmental engineering at Stanford, and his colleagues, including U.C. Berkeley researcher Mark Delucchi, are the first to outline how each of the 50 states can achieve such a transition by 2050.
In its “Energy Security and Sustainability Strategy” (ES2 Strategy) report, the US army outlines the steps it should take to increase resilience and adapt to an ever changing world. Energy makes the go world round, and for an army it's literally a matter of life and death. Not surprisingly, the authors note given the current climate of affairs the "army will prioritize solutions that reduce multiple resources. The Army can use energy more efficiently by purchasing energy efficient products, modernizing buildings and utility systems, purchasing energy efficient vehicles, and using more renewable/alternative energy sources." Basically, being dependent on a finite resource (oil) is a security vulnerability, which isn't something new. Military strategists have been aware of this for a long time - maybe the most during WWII when many lives were claimed in battles over oil rigs in North Africa and the Middle East, and oil refineries were being bombed on the clock. What's changed today is the feasibility of renewable energy sources. Drawing the line, in those situations were oil is a liability (and we can only expect these to become ever numerous in the future), it'll be scrapped in favor of renewable energy systems, both for generating and storing energy.
Rooftop solar is now cheaper than grid electricity for 30 million people living in 6 cities, a new report writes - even without government subsidies. This includes the cost of installing the solar panels. In other words, the future is here - solar energy is cheaper than the alternative.
A massive study conducted by the Massachusetts Institute of Technology concluded that solar has the most chances to meet our planet's long term energy demands, while also reducing greenhouse emissions. However, governments should be more supportive of the industry's development.
A shocking conclusion came from an International Monetary Fund report: they found that fossil fuels will be subsidized by a whopping $5.3 trillion dollars, way more than total health spendings of the entire world combined.
A Spanish startup called Vortex Bladeless has been receiving a lot hype recently once it unveiled a prototype for a bladeless wind turbine. Like conventional pin-wheel turbines, their turbine also works by harnessing the kinetic energy of the wind. However, instead of moving blades which in turn rotate a shaft connected to a generator, the "asparagus" turbine uses a magnets to transform oscillating movements into electricity. It's a radical idea, one that might forever change the scenery most of you have already become used to - huge parks of windmills, which personally I'm rather fond of. So far, the engineers behind the project have been rather secretive and the only things we know about the Vortex Mini (the first commercial turbine of this kind set to come out next year) is what has been disclosed by the company. They're boasting an impressive performance - to the point that it might be feasible to forego pin-wheel turbines altogether in favor of the Vortex - but until we seen some independent assessments I believe skepticism is warranted.
Only six months ago, a 230-foot strip of road was covered in solar panels in the Netherlands. Since then, some 3,000 kilowatt-hours of energy were produced or enough to power one Dutch home for a whole year. These news came as a surprise even to the developers of SolaRoad, as the project has been dubbed.
About a month ago, we were telling you about a new battery for houses Tesla was working on, that might revolutionize home energy and bring forth massive change in renewable energy - now, the official announcement is out. Homeowners will be able to get the Powerwall battery, in 7 or 10 kilowatt modules, which will cost $3000 and $3500 respectively.
In unanimous vote, the city of Vancouver, Canada, passed its Greenest City Action Plan – to become the world’s greenest city by 2020; one of their goals is to use only renewable energy in only 5 years. In light of that and other recent developments, it’s starting to feel like much of the world might actually go […]
