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A community in Canada has an unusual form of solar power that can provide over 90% of the annual heating and hot water needs for the homes, despite being situated in a cold Alberta location where winter temperatures can reach -33 degrees C (-27 F). The Drake Landing Solar Community collects solar energy in a heat storage fluid through an array of solar panels on the roof of each home and covering all of the garages at the back of each home. The heated fluid is transferred to a neighborhood energy center, and then into the ground beneath an insulated layer, where the heat is stored in the earth.

Looking to make solar panels cheaper, MIT researchers have created sheets of glass coated with advanced organic dyes that more efficiently concentrate sunlight. The researchers, whose results appear in this week's issue of Science, say that the coated glass sheets could eventually make solar power as cheap as electricity from fossil fuels.

Dubbed the "missing greenhouse gas," nitrogen trifluoride (NF3) was found by a recent study to have a global climate impact 17,000 times greater than carbon dioxide. The chemical is found in the LCD panels of cell phones, televisions, and computer monitors, as well as in semiconductors and synthetic diamonds. The chemical is not one of the greenhouse gases monitored by the Kyoto Protocol, due to the fact that LCDs were not produced in significant quantities when it was drafted.

EAST AMWELL, N.J.-Mike Strizki has not paid an electric, oil or gas bill-nor has he spent a nickel to fill up his Mercury Sable-in nearly two years. Instead, the 51-year-old civil engineer makes all the fuel he needs using a system he built in the capacious garage of his home, which employs photovoltaic (PV) panels to turn sunlight into electricity that is harnessed in turn to extract hydrogen from tap water.

Energy Future: Think Efficiency differs from other energy efficiency reports in its emphasis on scientific and technological options and analysis. Developed by a panel of leading experts in energy policy with backgrounds in physics, engineering, economics, and policy, Energy Future: Think Efficiency examines what works, what can work soon, and what is feasible for the future. Based on emerging technologies, this report targets which research and development gives America the best return for its dollars.

A cheap new way to attach mirrors to silicon yields very efficient solar cells that don't cost much to manufacture. The technique could lead to solar panels that produce electricity for the average price of electricity in the United States.

Scientists at the Ohio State Institute for Materials Research recently announced that they have developed a new hyper-efficient solar material that is able to capture light from every spectrum of the rainbow. Whereas most photovoltaics are limited to collecting energy from a small range of frequencies, the new material is able to absorb energy from all spectrums of visible light at once. The breakthrough development heralds a new breed of extremely efficient solar panels on the horizon.

TreeHugger has a post on micro-wind power devices for the home - Hot Home Wind Turbines You Can Actually Buy, Plus One You Wish You Could. Though solar panels definitely hog the renewable energy stage when it comes to home installations, a number of new, innovative wind turbines have entered the market in the past couple of months. Not all of these are intended to be mounted on your roof, some you'll need a bit of a yard (and a dearth of neighbors) to install and they vary in price from affordable to "when am I going to actually pay this off?", but they all go to show that there's more than one way to harness the wind to generate electricity. Check 'em out...

Shin Abe doesn't find it odd that the picturesque little Japanese town of Kuzumaki, where he has lived all his life, generates some of its electricity with cow dung. Nor is the 15-year-old middle school student blown away by the vista of a dozen wind turbines spinning atop the forested peak of nearby Mt. Kamisodegawa. And it's old news to Abe that his school gets 25% of its power from an array of 420 solar panels located near the campus. "That's the way it's been," he shrugs. "It's natural." To Abe, it is. But the blase teen has grown up in an alternative universe - one that might be envisioned by Al Gore. That's because Kuzumaki (population 8,000) has over the past decade transformed itself into a living laboratory for the development of sustainable and diversified energy sources. "When I was growing up, all we had [to generate power] was oil," says Kazunori Fukasawaguchi, a Kuzumaki native who now serves in local government. "I never imagined this kind of change." (Read TIME's Top 10 Green Ideas of 2008.)

The Scottish Government has created one of the biggest international innovation prizes in history - a £10 million challenge for advances in wave and tidal energy. At a ceremony this week in historic Edinburgh Castle, details of the 'Saltire Prize' were revealed to leading scientists, environmentalists and potential entrants after being finalised by a panel of international experts who comprise the prize Challenge Committee. Dr Anne Glover, Scotland's Chief Scientific Adviser and Chair of the Challenge Committee, said the Saltire Prize will be awarded to the team that can demonstrate in Scottish waters a commercially viable wave or tidal energy technology that achieves a minimum electrical output of 100GWh over a continuous two year period using only the power of the sea and is judged to be the best overall technology after consideration of cost, environmental sustainability and safety.

Los Angeles mayor Antonio Villaraigosa Monday unveiled an ambitious plan that calls for installing solar panels on residents' rooftops to meet 10 percent of the city's energy needs by the year 2020. "Our solar initiative is the largest of any kind anywhere in the world. When it takes full effect, L.A. will have 1,280 megawatts more capacity -- more than exists in the entire United States today," said the mayor.

The solar thermal energy or the radiant heating systems is as simple process of pumping water into solar panels to be heated and then stored in tank for ready use.

The Orange County Convention Center's massive rooftop will soon shoulder the largest solar project in the Southeast. County officials approved a $7.3 million plan Tuesday to blanket the roof of the nation's second-largest convention center with panels that can turn sunshine into energy, without producing pollution.

Can you explain to me and the readers why solar panels are so expensive? Why can we not get the cost of this energy down to US $0.15 per kWh while we're paying off the equipment? Why are we paying for future production capability today? It is like the current electricity providers are saying, "Well, your house will use 12,000 kWh this year so we want our $1,800 now" or worse "give us 20 years up front" as the solar industry does today! If the solar market really wants to see a green planet then I feel they need to get the green out their eyes! Can they not see that they can truly make every home owner self sufficient if they bring their costs in line. It seems as though this renewable energy game is for the wealthy. If I want my home to be totally self-sustaining, it would cost me $80,000! A: Ian, I am happy to respond to your question since I have spent my own money on both my net-zero-energy home and my zero-energy office building - so I am acutely aware of the costs.

Inhabitat is doing a "Energy 101" series to explain why smart grids are necessary - Energy 101: Where Does Our Power Come From ?. Today we're excited to announce the launch of our new Energy 101 series,. in which we'll be exploring the future-forward technologies that stand to upgrade our grids, reduce our energy footprint, and slow the speed of global warming. Unless you have been living in a cave for the past few years, you've probably heard terms like "energy conservation", "off-grid energy", and "smart grid" tossed around. But before getting into the nitty-gritty of transitioning to renewable energy, we should stop and examine where exactly our power comes from now. Unless you derive all your power from on-site renewable energy sources like solar panels or wind turbines, chances are that you're connected to the power grid, a vast network that delivers electricity from suppliers to consumers. Right now, most energy on the grid comes from generating plants. These plants still usually get power from traditional sources like coal, nuclear, and hydroelectric dams. But as concerns over carbon emissions, safety, and long term sustainability of these sources grow, electrical utilities have begun to switch over to renewable energy sources.

If China's addicted to solar hot water heating, the city of Dezhou is it's dealer (and one of it's biggest customers). A new video from Greenpeace, above, highlights the build-up of solar among residents and as an industry. Some facts from this shining example: Of the city's 5.5 million residents, almost all living in the new town use solar heating, and about 90 percent of homes in the old town have solar heating. In 2007, 800,000 people had jobs in the solar panel industry, or about one in three people of working age in the city. That figure is expected to grow to 150,000 by 2020. No wonder: Dezhou is home to the world's biggest solar water heater manufacturer. And compared with an electric heater, a solar heater in Dezhou, which starts at about US$190, pays for itself in five and a half years. The numbers in Western countries, by comparison, make us want to shield our eyes.

The Guardian has an article on a report from Greenpeace, the European Solar Thermal Electricity Association and the International Energy Agency's SolarPACES group on the potential for solar thermal power to supply a large proportion of our energy needs (why they limit it to 25% is a mystery to me) - Concentrated solar power could generate 'quarter of world's energy'. Solar power stations that concentrate sunlight could generate up to one-quarter of the world's electricity needs by 2050, according to a study by environmental and solar industry groups. The technology, best suited to the desert regions of the world, could also create hundreds of thousands of new jobs and save millions of tonnes of CO2 from entering the atmosphere. Concentrating solar power (CSP) uses mirrors to focus sunlight onto water. This produces steam that can then turn turbines and generate electricity. It differs from photovoltaics, which use solar panels to turn sunlight directly into electricity and can operate even on overcast days. CSP only works in places where there are many days with clear skies and is a proven, reliable technology. At the end of 2008 CSP capacity was around 430MW, and worldwide investment in the technology will reach