Eco20/20

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.

The US Dept. of Energy has released the State Renewable Electricity Profiles 2007. The web page for the report is here, including a clickable map and direct access to the state-level stats as well as the entire report in a single, 645KB PDF.

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

What is the best evidence that concentrated solar thermal power (CSP) aka solar baseload is indeed a core climate solution with big near-term - and very big medium-term - promise? One of the country's biggest companies, Lockheed-Martin, with 2008 sales of $42.7 billion, has jumped into the race to build the biggest CSP plant with thermal storage.

Technology Review has an article on thin film solar vendor Xunlight's approach - making cells on flexible steel sheets - Roll-Up Solar Panels. Xunlight, a startup in Toledo, Ohio, has developed a way to make large, flexible solar panels. It has developed a roll-to-roll manufacturing technique that forms thin-film amorphous silicon solar cells on thin sheets of stainless steel. Each solar module is about one meter wide and five and a half meters long. As opposed to conventional silicon solar panels, which are bulky and rigid, these lightweight, flexible sheets could easily be integrated into roofs and building facades or on vehicles. Such systems could be more attractive than conventional solar panels and be incorporated more easily into irregular roof designs. They could also be rolled up and carried in a backpack, says the company's cofounder and president, Xunming Deng. "You could take it with you and charge your laptop battery," he says.

The world's first floating wind turbine is to be towed out to sea this weekend. Statoil's Alexandra Beck Gjorv told the BBC the technology, the Hywind, to be put off Norway's coast - "should help move offshore wind farms out of sight". And it could lead to offshore wind farms eventually being located many miles offshore, away from areas where they cause disruption, Ms Gjorv added. This would benefit military radar operations, the shipping industry, fisheries, bird life and tourism.

During a visit to Fort Wayne, Indiana, where he toured a manufacturer of geothermal heating pumps (GHPs), U.S. Energy Secretary Steven Chu today announced nearly $50 million from the American Reinvestment and Recovery Act to advance commercial deployment of the renewable heating and cooling systems, which use energy from below the Earth's surface to move heat either into or away from the home or building. The expanded manufacturing and installation of GHPs could aid in the creation of new jobs while reducing the use of fossil fuels. "The heat from the Earth represents a significant energy resource that can be tapped to reduce emissions contributing to climate change." said Secretary Chu. "Expanded use of GHPs in the United States will create new jobs for engineers, manufacturers and technicians while at the same broadening our nation's clean and renewable energy portfolio."

Energy Intensive Sectors, IT Industry to Receive Recovery Act Funds WASHINGTON, DC - U.S. Department of Energy Secretary Steven Chu today announced plans to provide $256 million from the American Recovery and Reinvestment Act to support energy efficiency improvements in major industrial sectors across the American economy. The funding is targeted at reducing the energy consumption of America's manufacturing and information technology (IT) industries, while creating jobs and stimulating economic growth. These programs will help create manufacturing jobs quickly, along with jobs for technicians and experts who will be needed in the long-term to maintain and operate the new equipment. "Supporting the development of the latest industrial technologies plays an important role in helping U.S. industry to lead the world in energy efficiency and productivity," said Secretary Chu. "Working together with American manufacturing and IT industries, we will be able to create new jobs, reduce industrial energy use and limit damaging greenhouse gas emissions."

If you have been wondering where all the economic stimulus money is going, then this news should excite you.

A recent article from Oprah.com, Ellen Ogden of the National Gardening Association, discussed some great ways to be an environmentally conscious gardener.

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.

Wandering through the Maker Fair expo, I came across this solar charger I hadn't heard of before. It's called GoBe, and looks like a great portable way to charge up some hefty devices, possibly even your laptop. It comes in two parts - a brief case-sized fold-out solar panel that can be propped up at different angles, and a lantern-sized battery pack. The solar panel has a max of 13 watts, which means you'll get back-up power to a laptop after a day's worth of charging, but can't really run a laptop off of it. However, it's great for charging up the GoBe hub so you have spare power for a wide range of other devices.

How to convert your existing toilet to dual flush and save thousands of gallons of water.

How you can start a career in green energy and alternative energy jobs.

How to locate phantom loads or vampire loads using the Kill a Watt power monitor.

How to convert your toilet to a dual flush model easily with a retrofit kit.

Environmental Art, blue chalk line marking what part of NYC would be under water

With the economy sinking like a tanker, a rising trend is the concept of small living.