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The US could replace all its cars and trucks with electric cars powered by wind turbines taking up less than 3 square kilometres - in theory, at least. That's the conclusion of a detailed study ranking 11 types of non-fossil fuels according to their total ecological footprint and their benefit to human health. The study, carried out by Mark Jacobson of the atmosphere and energy programme at Stanford University, found wind power to be by far the most desirable source of energy. Biofuels from corn and plant waste came right at the bottom of the list, along with nuclear power and "clean" coal.

A MAJOR criticism of wind farms is that they are intermittent. Wind does not blow consistently and, as a result they do not provide a continuous supply of power, but must be backed up by conventional fossil fuel plants. However, a renewables firm believes it has hit on a solution, and is hoping to use it in Scotland. A hydrogen plant would store energy from the wind farm, creating a reserve that could be dipped into on demand, so that even when the wind was not blowing, an electricity supply would be available.

Growing concerns over climate change and energy security have kicked research on alternative energy sources into high gear. The list of options continues to expand, yet few papers have comprehensively reviewed them. And fewer still have weighed the pros and cons in as much depth as a new study published earlier this month in the journal, Energy & Environmental Science. The results are a mixed bag of logical conclusions and startling wake-up calls. The review pits twelve combinations of electric power generation and vehicular motivation against each other. It is a battle royal of nine electric power sources, three vehicle technologies, and two liquid fuel sources. It rates each combination based on eleven categories. And it was all compiled by one man, Mark Jacobson, professor of civil and environmental engineering at Stanford University.

WorldChanging has a post on a Rocky Mountain Institute backed initiative to pave the way fro smart grids and electric vehicles - Project Get Ready Aims to Create Electric Vehicle Revolution. Creating a well functioning smart grid - cyclically connected to smart vehicles and buildings and houses, as well as personal and public renewable energy systems - will be no small infrastructure feat. Utility providers, technology innovators, neighborhood councils and local governments will need to come together to provide needed support -- both monetarily and ideologically. Although U.S. President Obama and the recently passed stimulus plan are pushing the renewable, electric energy revolution forward, residents across the nation might need more motivation to make the leap from fossil fuel users to plug-in pioneers. A new project, headed by "think-and-do" tank the Rocky Mountain Institute, is offering to help city leaders provide community members with that extra inspiration. The initiative, Project Get Ready, supplies a menu of strategies that are meant to help cities prepare for the "plug-in" transition. According to RMI, problems related to individual hesitancy toward purchasing electric vehicles and investing in the infrastructure itself, can "be overcome if cities/regions become ecosystems that welcome electric vehicles."

The world needs a "revolution" in science and technology to solve global warming, says Energy Secretary Steven Chu. Chu, a Nobel Prize-winning physicist, made the remarks in today's New York Times. The article was short on specifics, but Chu, former director of Lawrence Berkeley National Laboratory, said Nobel-level breakthroughs were needed in electric batteries, solar power and crops that could be turned into fuel. "Science and technology can generate much better choices," Chu, a long-time proponent of alternative energy development, told the newspaper. "It has, consistently, over hundreds and hundreds of years." Among the points he made:

Twenty years ago NASA scientist, James Hansen told Congress that the use of fossil fuels was causing global warming. Earlier this year, Hansen and several co-authors published a paper titled Target Atmospheric CO2 that declared the amount of carbon reduction that needs to happen "if humanity wishes to preserve a planet similar to put to that on which civilization developed and to which life on Earth is adapted."

So far, CNG vehicles haven't made a blip on my radar screen, even though the group Natural Gas Vehicles for America (NGVA) estimates there are 150,000 NGVs on U.S. roads today and over 5 million worldwide. It took a phone call from sunny Southern Utah to clue me in to recent developments, which include a local refueling station overflowing with CNG-hungry vehicles. There are about 1500 CNG refueling stations in the US, which is about the same number of commercial stations offering E85 ethanol blends. Utah has a total of 91 CNG filling stations, most of which are reserved for commercial fleet use, but there are 20 open to the public. According to an article by the Associated Press, you could drive Utah from top to bottom and hit 22 different stations offering compressed natural gas.

With gas prices so high, the media is awash with lists of gas-saving tips. Well how's this for a tip? If you listen to us, you can see hybrid-type savings without having to buy a new car. By changing your driving habits you can improve fuel economy up to 37 percent right away (depending on how you drive). Combine several tips and perform routine maintenance and you will save real dollars, not just pennies.

The US Department of Energy has released the latest edition of their Annual Energy Review (from the Executive Summary): The projections in AEO2009 look beyond current economic and financial woes and focus on factors that drive U.S. energy markets in the longer term. Key issues highlighted in the AEO2009 include higher but uncertain world oil prices, growing concern about greenhouse gas (GHG) emissions and its impacts on energy investment decisions, the increasing use of renewable fuels, the increasing production of unconventional natural gas, the shift in the transportation fleet to more efficient vehicles, and improved efficiency in end-use appliances. Using a reference case and a broad range of sensitivity cases, AEO2009 illustrates these key energy market trends and explores important areas of uncertainty in the U.S. energy economy. The AEO2009 cases, which were developed before enactment of the American Recovery and Reinvestment Act of 2009 (ARRA2009) in February 2009, reflect laws and policies in effect as of November 2008.

Vice President Joe Biden and Energy Secretary Steven Chu today announced plans to invest $3.2 billion in energy efficiency and conservation projects in U.S. cities, counties, states, territories, and Native American tribes. The Energy Efficiency and Conservation Block Grant program, funded by President Obama's American Recovery and Reinvestment Act, will provide formula grants for projects that reduce total energy use and fossil fuel emissions, and improve energy efficiency nationwide. "These investments will save taxpayer dollars and create jobs in communities around the country," said Vice President Biden. "Local leaders will have the flexibility in how they put these resources to work - but we will hold them accountable for making the investments quickly and wisely to spur the local economy and cut energy use."

During Earth Week, visitors to the U.S. Department of Energy website -- energy.gov -- will be immediately directed to a special web feature giving them key energy saving tips and user-friendly information about the critical emerging technologies and initiatives underway to move the nation toward a clean energy economy. The webpage is intended to help people enjoy a more green lifestyle by making simple adjustments. It details steps consumers can take to make informed energy decisions, save money on monthly bills, become more energy efficient, and protect the environment. These money saving tips include monitoring energy usage in homes, purchasing fuel efficient hybrid and plug-in hybrid cars, insulating homes, using Lighting Emitting Diodes (LED) and Compact Florescent Light (CFL) bulbs and using power strips to fully shut off multiple appliances and electronics at once when not in use. "Earth Week is a fitting time for all of us to reevaluate our personal energy habits," Secretary Chu said. "By taking simple steps to reduce our energy use, all Americans can strike a blow for energy independence, while saving money on energy bills and moving America toward a clean energy future."

As the push for fuel consumption savings increase, more Americans have taken to riding the bus to work.

Jerome a Paris has an excellent (and long) article at TOD about the economics of wind power - The cost of wind, the price of wind, the value of wind. I'd like to try to clear some of the confusion that surrounds the economics of wind power, as it is often fed and used by the opponents of wind to dismiss it. As I noted recently, even the basic economics of energy markets are often wilfully misunderstood by commentators, so it's worth going in more detail through concepts like levelised cost and marginal cost, and identify how different electricity producers have different impacts on electricity (market) prices (which may or may not be reflected in retail prices) and have different externalities. Value for society of a generation source may also include other items that are harder to acount in purely monetary terms (and/or whose very value may be disputed), such as the long term risk of depletion of the fuel, or energy security issues, such as dependency on unstable and/or unfriendly foreign countries or vulnerable infrastructure.

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."

Kestrel is a company which is committed to deliver renewable energy needs for the coming generation and they put their effort in reducing the use of fossil fuels.

Ladies and Gentlemen! Our keynote speaker is Rob 'Waldo' Waldman. When Waldo was 8 years old, he got his first whiff of jet fuel and knew he was destined to fly! A graduate of the Air Force Academy, he is a decorated F-16 fighter pilot with more than 65 combat missions...

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.