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Largest Grassroots Solar Event in America: Register Now! Imagine 140,000 people participating in a national tour of solar-powered homes and institutions - all in one day. That's what happened last year at the American Solar Energy Society (ASES) National Solar Tour - and this year looks set to be even bigger. Whether it's DIY solar homes and solar cars, new homes with solar as standard, or utility-scale multi-megawatt solar installations, TreeHugger is not short of stories about how solar power is leading us away from fossil fuel dependence and helping to stem climate change. But while change is beginning to happen, it's not happening anywhere near fast enough. That's why the ASES tour is so important - getting people in front of real, live solar installations, showing them how they work, and encouraging folks to go solar themselves. Read on to find out how you can participate.

tullamarine interchange, tullamarine solar power, solar power, solar sound barrier, solar power barrier, sound-proof solar panels, noise reduction solar barriers In the search for a solar solution to power our cities, one of our biggest obstacles is the massive acreage required by conventional arrays. Photovoltaic panels are flat and expansive, and urban centers are at a serious loss for free space. Now Australian renewable energy retailer Going Solar has conceived of a clever strategy that infuses urban transit systems with energy producing potential - install solar panels in highways as sound barriers!

Renewable Energy World has an article on a plan to greatly expand the use of passive solar thermal energy in Europe - Action Plan for 50%: How Solar Thermal Can Supply Europe's Energy. The research efforts and infrastructure needed to supply 50% of the energy for space and water heating and cooling across Europe using solar thermal energy has been set out under the aegis of the European Solar Thermal Technology Platform (ESTTP). Published in late December 2008, more than 100 experts developed the Strategic Research Agenda (SRA), which includes a deployment roadmap showing the non-technological framework conditions that will enable this ambitious goal to be reached by 2050. A strategy for achieving a vision of widespread low-temperature solar thermal installations was first explored by ESTTP in 2006, but since then the SRA has identified key areas for rapid growth. These focus points include the development of active solar buildings, active solar renovation, solar heat for industrial processes and solar heat for district heating and cooling. Meanwhile, amongst the main research challenges is the development of compact long-term efficient heat storage technology. Once available, they would make it possible to store heat from the summer for use in winter in a cost-effective way.

Solar energy can be utilized in various ways - to provide electricity, mechanical power, heat and lighting. Passive solar heating and cooling can save substantial electricity bills. Design of a building is very important for tapping passive solar energy. The building and windows are designed in such a way that they carefully balance their energy requirements without additional mechanical equipment. Solar benefits are utilized through windows and pumps, and fans are used minimally. Passive solar energy utilizes building constituents such as walls, floors, roofs, windows, exterior building elements and landscaping to control heat generated by sun. Solar heating designs try to trap and store thermal energy from sunlight directly. Passive cooling minimizes the effects of solar radiation through shading or generating air flows with convection ventilation.

Will Stewart has a guest post up at The Oil Drum on passive solar design techniques - Passive Solar Design Overview - Part 1. Also, at TOD, a post on the Passivhaus standard from another long-time commenter, marjorian - US Housing and the Passive Home Standard. Passive solar refers to the design and placement of a building to enable solar heating without the need for sensors, actuators, and pumps, in contrast to active solar, which utilizes pumps/blowers, sensors, and logic control units to manage collection, storage, and distribution of heat. The two techniques are not exclusive, however, and can work together effectively. As solar radiation (insolation) is a diffuse energy source, and not at the beck and call of a thermostat, passive solar design techniques are at their best when combined with other related methods, such as energy efficiency (insulation, weatherization, building envelope minimization), daylighting, passive cooling, microclimate landscaping, and a conservation lifestyle (i.e., temperature settings, raising and lowering of insulated shades, etc). Most of these topics will be covered in other articles, though passive cooling will be addressed in this series, which is intended as an overview, as a complete engineering treatment on passive solar design would require several dozens of articles.

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

Going solar seems to get easier by the day - both logistically and financially. Before, homeowners had to save up to pay the huge upfront cost of buying and installing solar panels. Now, would-be solar energy users don't need to put up startup funds - nor do they even have to deal with an extra repayment bill! The latest company making solar power accessible is Renewable Funding, a financial company with a new solar-friendly product called CityFIRST. CityFIRST basically allows homeowners to install solar panels with no upfront cost - using a solar installer or contractor of their choice - then pay for panels over 20 years via a line item on property tax bills.

A company called Green Energy Capital Partners based in Philadelphia is planning to build what they term as the second largest solar energy plant in the nation, in the Carbon County. The $60 million, 100-megawatt solar energy plant will be built on 100 acres of land near the Green Acres Industrial Park in Nesquehoning. The solar energy plant is predicted to contain 40,000 solar panels on rotating mounts.

The Solar Energy Industries Association (SEIA) has released its 2008 U.S. Solar Industry Year in Review, highlighting a third year of record growth for the solar industry. According to the report 1,265 megawatts (MW) of all varieties of solar power were installed in 2008, bringing total U.S. solar power capacity up 17 percent to 8,775 MW. California was the leader among state grid-tied PV installations with 178.6 MW, New Jersey followed with 22.5 MW installed, Colorado was next at 21.6 MW, Nevada installed 13.9 MW and Hawaii with 11.3 MW. The 2008 figure included 342 MW of solar photovoltaic (PV) installations, 139 MWTh (thermal equivalent) of solar water heating, 762 MWTh of pool heating and an estimated 21 MW of solar space heating and cooling.

High prices are just the tip of the energy crisis iceberg. Now is the time to think about how we use our natural resources before your wallet gets hit any harder. More people are looking to renewable energy sources to help offset these costs and to remove our dependence on finite energy sources. Solar and wind are two of the easiest renewable energy sources for a homeowner to use, but professional installation is costly. Surprisingly, do it yourself solar panel and wind generator kits are easy to find and easy to use. With large companies like GE producing these kits, the build your own solar panel sets are very affordable and offer quicker return on your investment than purchasing and professionally installing a solar energy system. In general the instructions are easy to follow, even for teens and children, and in no time you are on your way to your own solar or wind power system. My blog talks more about this at http://solarandwindforhome.blogspot.com/

Kramer Junction. Nevada Solar One. Andasol 1. Kimberlina. They're obscure names today. But they'll be household names tomorrow. The reason? Each is now providing 'here and now' proof concentrating solar power (CSP) works. That can't be said for cabon capture and storage. Nor can it be said for 'next generation' nuclear. Each faces years of additional research and development before some 'first mover' will be game enough to build one. That just isn't the case with concentrating solar power. It's got 20 years of proven commercial operation (Kramer Junction) behind it. It also has new innovations coming on line (Nevada Solar One), with solar thermal storage (Andasol 1), and the promise of super-low costs in coming years (Ausra's Kimberlina). What it adds up to is a price-declining research and development juggernaut in concentrating solar power. This is rapidly bringing concentrating solar power closer to competitiveness with dirty fossil fuels. The California Energy Commission estimates this price 'cross over' could happen by 2015. Bulls predict sooner. And in an industry where new plants and equipment can last 40 years, 5-7 years from now is like tomorrow. What this means is that for forward planning of new infrastructure, concentrating solar power is already nipping at the heels of coal. Toss in carbon prices and the reduced likelihood of protesters chaining themselves to bulldozers as they are likely to at any new coal plants, CSP starts looking like a VERY good deal indeed.

In a move that will bring thin-film solar panels to the U.S. residential market, First Solar has signed a deal to provide installer SolarCity with 100 megawatts' worth of solar arrays over the next five years. First Solar is also investing $25 million into SolarCity, the Silicon Valley startup backed by Tesla Motors founder Elon Musk. This is First Solar's initial foray into the home market - and apparently the first of any thin-film solar module maker. Thin-film solar panels are made by depositing solar cells on sheets of glass or flexible material and use little of the expensive silicon that forms the heart of more bulky conventional solar modules. That makes thin-film panels cheaper, although they are less efficient at converting sunlight into electricity. And thin is in for homeowners who prefer less-obtrusive panels on their roofs.

Integrating solar cells into building materials could make solar power more attractive to homeowners. Seamless solar: The solar system shown here (darker panels) integrates thin-film solar modules directly into a metal roof. Such systems offer cost savings in labor and materials and blend well with buildings' designs. Credit: EnergyPeak In an effort to promote the adoption of solar technology, United Solar Ovonic of Auburn Hills, MI, has teamed with a major roofing company to create a metal roof system that generates electricity from sunlight. The partnership offers seven different prefabricated systems, ranging in capacity from 3 to 120 kilowatts. Tests show that the solar roof panels are rugged and can withstand winds in excess of 160 miles per hour.

Going solar seems to get easier by the day - both logistically and financially. Before, homeowners had to save up to pay the huge upfront cost of buying and installing solar panels. Now, would-be solar energy users don't need to put up startup funds - nor do they even have to deal with an extra repayment bill! The latest company making solar power accessible is Renewable Funding, a financial company with a new solar-friendly product called CityFIRST. CityFIRST basically allows homeowners to install solar panels with no upfront cost - using a solar installer or contractor of their choice - then pay for panels over 20 years via a line item on property tax bills.

TreeHugger has a post on a solar thermal power plant planned for Arizona (Which isn't the largest announced, but how many of these get built in the short term remains to be seen) - Largest Solar Plant in the World Coming to Arizona ?. Could be--details are still emerging and sketchy, but it looks like one of the world's biggest solar projects will find its home in Arizona. The proposed 340 megawatt system would use advanced parabolic trough technology, and would cost over $2 billion--and yes, it would take advantage of stimulus funding. Looks like Arizona's becoming a hotbed for solar power indeed--this would be the fourth solar plant in Mohave County, AZ alone. Here are the whispered details: Mohave Sun Power and Albiasa Solar are the companies behind the ambitious installation, and they'll be using the same technology as another recently proposed massive solar project:

SunEdison has activated a 1.2-megawatt solar photovoltaic (PV) energy system for Progress Energy Carolinas. Sited on 10 acres of land at Progress Energy's Sutton Plant near Wilmington, the 1.2-MW ground mount system is the largest in North Carolina. SunEdison financed, built, and operates the PV solar energy system. Progress Energy purchases electricity from SunEdison under a 20-year solar energy purchase agreement. Progress Energy also purchases renewable energy credits from SunEdison.

In continued efforts to promote clean energy, U.S. House Representative Gabrielle Giffords (D-AZ) has introduced the Solar Technology Roadmap Act, which is now on its way to the full House after achieving commendable bipartisan support after short deliberation in the Science and Technology Committee. Giffords' bill would designate the U.S. Department of Energy (DOE) as the leading organization for developing a strategic plan to direct solar energy research and its deployment into the commercial sector. The legislation would also allocate $2.25 billion for solar research over the next five years, which is a far cry from the pro-oil Bush administration that pillaged funding for renewables.

In continued efforts to promote clean energy, U.S. House Representative Gabrielle Giffords (D-AZ) has introduced the Solar Technology Roadmap Act, which is now on its way to the full House after achieving commendable bipartisan support after short deliberation in the Science and Technology Committee. Giffords' bill would designate the U.S. Department of Energy (DOE) as the leading organization for developing a strategic plan to direct solar energy research and its deployment into the commercial sector. The legislation would also allocate $2.25 billion for solar research over the next five years, which is a far cry from the pro-oil Bush administration that pillaged funding for renewables.

Technology Review has an article on making solar power cheaper using concentrators combined with PV panels - Cheaper Solar Concentrators. Skyline Solar, a startup that today announced its existence to the world, has developed a cheaper way to harvest energy from the sun. The company's solar panels concentrate sunlight onto a small area, reducing the amount of expensive semiconductor material needed to generate electricity. The technology will bring the cost of solar power in line with the average cost of electricity, at least in sunny areas, says Ben Eiref, Skyline Solar's director of product management. Currently, solar power can be far more expensive than electricity from conventional sources; many governments have resorted to subsidies to increase its use.

REW reports the world's biggest solar thermal tower has opened in Spain - World's Largest Solar Power Tower Commissioned. Abengoa Solar has begun commercial operations of the world's largest solar power tower plant, a 20 MW installation. The company claims that the performance of the power plant, the so-called PS20, has exceeded its design output in the wake of its three-day production and operational testing period. Located at the Solúcar Platform, near Seville, Spain, PS20 is the world's second power tower plant in commercial use and features a number of significant technological improvements with respect to its predecessor, PS10. These enhancements include a higher-efficiency receiver, various improvements in the control and operational systems, and a better thermal energy storage system. PS20 consists of a solar field made up of 1255 heliostats with a surface area of 1291 square feet each. This reflects the solar radiation it receives onto the receiver, located on the top of a 531 foot-high tower, producing steam which is converted into electricity generation by a turbine. Plant construction was carried out by Abener.

Solar Power Authority has a post on the solar powered Google headquarters - Googleplex Solar. The Googleplex headquarters located in Mountain View California has installed one of the largest corporate solar power structures of any other company to date. The array consists of 9,212 solar panels produced by Sharp Electronics and has a capacity of 1.6 Megawatts (MW) which cover's ~30% of the Google campus electricity needs, the equivalent of roughly 1,000 California homes. This installation is said to save Google $393,000 in electricity per year and can be monitored real time at this interactive page that contains data on the electricity being produced. One of the most unique features of the Googleplex array of solar panels is that it contains several clusters of solar trees. These parking lot covers are designed to keep cars cool while also producing electricity and serving it to both the Googleplex or plugin hybrid electric cars (PHEV's).