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The rolling plains of Castilla-La Mancha are dominated by the windmills that provoked the fevered imagination of Don Quixote. But Spain's relentless investment in wind power and other renewable energy sources has proved wrong those who thought it was tilting at windmills. The sleek white wind turbines and hydroelectric plants that have sprung up across the country in recent years generated 30 per cent of Spain's energy this year for the first time.

New Study: 10 billion tonne saving in CO2 possible with wind energy by 2020: Wind power is key technology to prevent dangerous climate change. Wind power could produce 12% of the world's energy needs and save 10 billion tones of CO2 within 12 years, according to a new report published today. The 'Global Wind Energy Outlook 2008', published by the Global Wind Energy Council (GWEC) and Greenpeace International, looks at the global potential of wind power up to 2050 and found that it could play a key part in achieving a decline in emissions by 2020, which the IPCC indicates is necessary to avoid the worst consequences of climate change.7By 2020, wind power could save as much as 1.5 billion tonnes of CO2 every year, which would add up to over 10 billion tonnes in this timeframe. The report also explains how wind energy can provide up to 30% of the world's electricity by the middle of the century.

Finally someone in the mainstream media has seen fit to share with the public one of the basic facts necessary to understand the energy politics of the last two years: Senator McCain did not show up for the crucial vote [to extend the renewable tax credits] on July 30, and the renewable energy bill was defeated for the eighth time. In fact, John McCain has a perfect record on this renewable energy legislation. He has missed all eight votes over the last year -- which effectively counts as a no vote each time. Once, he was even in the Senate and wouldn't leave his office to vote. ... The fact that Congress has failed eight times to renew them is largely because of a hard core of Republican senators who either don't want to give Democrats such a victory in an election year or simply don't believe in renewable energy.

Their mission: to deliver cost-efficient solar electricity. The Nanosolar company was founded in 2002 and is working to build the world's largest solar cell factory in California and the world's largest panel-assembly factory in Germany. They have successfully created a solar coating that is the most cost-efficient solar energy source ever. Their PowerSheet cells contrast the current solar technology systems by reducing the cost of production from $3 a watt to a mere 30 cents per watt.

Understanding wind energy can be a challenge. But it is no more complicated than the choices we are making on transportation. And just like those choices, wind is great for Pennsylvania's economy as well as our environment. Pennsylvania wind farms generate power about 70 percent of the time. But the amount of power is variable. That's why it is rated at 30 percent of capacity. It's like having a car that can go 100 mph but your average speed is much less.

If electric vehicles aren't your thing, then you may be pleased to hear that at least one company is working on giving that tried and true internal combustion engine a major boost. Artemis, an Edinburgh, Scotland-based company, has developed a hydraulic hybrid transmission that could potentially double the mileage of most vehicles -- by accident, as it happens. The firm's original goal had been to simply reduce CO2 emissions on the highway by 30% (a goal it also achieved).

The Bureau of Land Management said it will suspend all new solar energy projects on federal land for the next two years until it completes an environmental impact review. As discussed briefly in the preceding post, the BLM holds the country's most valuable sites in terms of solar energy potential, which are heavily concentrated in the southwest. The federal government owns roughly 650 million acres of land - nearly 30% of its total territory. The vast majority of those lands are located in the Western states and the vast majority of federal lands in the Western states are owned by the Bureau of Land Management. Here's a state by state breakdown of government land ownership.

The Solar Electric Power Association (SEPA) has outlined four easy steps to a thirty fold increase in the size of the US solar power industry between 2009 and 2016, leading to over $230 billion worth of investment and the creation of 440,000 permanent jobs. The influential industry group laid out the plans at this week's Solar Power International conference in San Diego. The four key recommendations to achieve this goal are as follows:

Not sure whether a wind turbine on your property would generate enough energy to be worth the effort? Stew no more: the Carbon Trust has launched a new "Wind Yield Estimation Tool" on its Website. The tool lets users calculate their annual mean wind speed, potential energy generation and carbon savings based on postcode, landscape and type of wind turbine. According to the Carbon Trust, the tool is the "most rigorous of its kind" and is based on 30 years of data from the Met Office's 220 weather stations.

CleanTechnica has a post from San Francisco mayor Gavin Newsom on the city's proposal to build a wave power plant offshore - Wave Energy to Bring Power and Jobs to San Francisco. Today, San Francisco took a meaningful step toward turning the promise of renewable ocean energy into reality. We submitted a preliminary permit application to the federal government to develop a wave power project off our coast that we believe can generate between 10 to 30 megawatts of energy, with potential of up to 100 megawatts. When this project is fully operational, upwards of 100 jobs could be created in San Francisco. Ocean power is a true "game changer" in the area of renewable energy. When wave and tidal power technologies reach commercial scale, they are expected to be able to provide thousands of megawatts of power to our coastal communities, dramatically green our energy portfolios and create thousands of new American jobs. In San Francisco, we've been doing our part to spur these technologies by aggressively advancing tidal and wave power pilot projects. We are 100% committed to this challenge. Wave power is not a new concept. In 1887, San Francisco Mayor Adolph Sutro recognized the power of San Francisco's waves and built a wave catch-basin to harness the ocean's power. Over the next century wave power development took a backseat to our dependence on oil, with oil platforms built along our coasts to feed our oil addiction.

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).

China is planning a stimulus package worth 440 billion dollars to expand its renewable energy use, state media said, as the country aims to rely more on cleaner ways to power its growth. The three trillion yuan (439.7 billion dollars) investment will see part of the focus on wind power, the Beijing Morning Post said, citing Liang Zhipeng, a State Energy Administration official. The government has collected opinions from local economic planning agencies and relevant companies about a draft plan, Liang said, according to the report. Under the plan, China's wind power capacity will reach over 100 gigawatts by 2020, the report said, more than triple a goal of 30 gigawatts announced in 2007 in a renewable energy development plan.

Renewable Energy World has a report on a new Scottish wind farm - Europe's Largest Onshore Wind Farm Is Switched on in Scotland. Today, the final phase of Europe's largest onshore wind farm is being turned on in Scotland. The 322-megawatt (MW), 140-turbine Whitelee wind farm was built by ScottishPower Renewables, which is part of the Spanish power business Iberdrola. In Spain and internationally, the Iberdrola Group, is the world's largest developer of wind power, with nearly 9700 MW of installed capacity. The wind farm uses Siemens 2.3-MW machines. Positioned 370 meters (1200 feet) above sea level, 15 kilometers (9 miles) outside of Scotland's largest city, Glasgow, the new wind farm has over half a million people living within a 30-km radius of it. It's one of the first large-scale wind farms to be constructed close to a large population center. The first phase of the wind farm started feeding power into the grid in January 2008.

A bunch of polls have come out that find the public supports strong climate action in spite of aggressive and widespread Republican fear-mongering about energy prices. For instance, the new Washington Post/ABC poll of 1,072 Americans (here) found: While majorities across the board support government regulation of greenhouse gases, it peaks among liberals (88%) and under 30s (80%), vs. 61% of conservatives and 64% of seniors. Support also ranges from 85% of Democrats, 65% "strongly," to 64% of Republicans, 39% strongly. Concern about its cost is broader, and stronger, among those who'd presumably be hit hardest - lower-income adults.