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Renewable energy in the United States is on the rise. America now generates twice as much electricity from the wind and the sun as we did just four years ago, and 2007 promises to be another year of record growth.

a number of the renewable energy-rich areas are too far from the electric transmission grid to render them useful. "We've made tremendous progress developing the transmission plan to bring electricity from the wind-rich Tehachapi Mountain area to Southern California customers. Our goal with RETI is to identify the next Tehachapi." -- Dian M. Grueneich, Commissioner, California Public Utilities Commission In an attempt to alleviate this dilemma, California has formed a public-private partnership called the Renewable Energy Transmission Initiative (RETI) to consider the feasibility of building new transmission lines to access renewable generation.

Renewable energies and demand-side technologies have become the third largest investment class for venture capitalists (VC) in the U.S.

In October 2006, Google announced a commitment to solar energy production and launched the largest solar panel installation to date on a corporate campus in the United States. Google has installed over 90% of the 9,212 solar panels that comprise the 1,600 kilowatt project. Panels cover the rooftops of eight buildings and two newly constructed solar carports at the Googleplex (check out this fly-over video).

Having built a swimming pool for his children in his backyard, Matt Burdick of Chandler, Arizona planned to heat it in winter with solar hot water panels. It would be an environmentally responsible and economical way to heat a non-essential part of his home, he thought. But the $5,000 panels had not been in place on his roof for long before he received an official letter ordering their removal. Not from the State of Arizona, the local police department or the Chandler Planning Department, but from the Homeowners' Association of which he was a dues-paying member.

The “25 by 25″ resolution is the result of a big lobbying campaign by a coalition consisting of more than 600 agricultural, energy, and environmental groups, business and labour interests and NGOs.

Large-scale power storage is crucial to our energy future: the Electric Power Research Institute, the U.S. utility industry's leading R&D consortium, says that storage would enable the widespread use of renewable power and make the grid more reliable and efficient.

As a case study of a successful approach, let’s take a look at what Spain has been able to accomplish. Spain has tackled its development of renewable energy sources aggressively. With 11,615 megawatts (MW) of installed wind capacity at the end of last year, Spain is second in the world to Germany in capacity (and about on par with the United States). The 23,372,000 MWh generated in 2006 provided just over 8.5% of Spain’s electricity: only Denmark boasts a higher percentage.

The two reports on the impacts of EE/RE on Texas -- Role of Energy Efficiency and Onsite Renewables in Meeting Energy and Environmental Needs in the Dallas/Fort Worth and Houston/Galveston Metro Areas and The Economic Benefits of an Energy Efficiency and Onsite Renewable Energy Strategy to Meet Growing Electricity Needs in Texas -- were released today by the American Council for an Energy-Efficiency Economy (ACEEE). These studies build upon an ACEEE report released last March that examined the statewide impacts of a suite of EE/RE policies that showed Texas could meet most of its projected needs for electricity while also addressing concerns about peak demand.

Solar proponents love to boast that just a few hundred square kilometers' worth of photovoltaic solar panels installed in Southwestern deserts could power the United States. Their schemes come with a caveat, of course: without backup power plants or expensive investments in giant batteries, flywheels, or other energy-storage systems, this solar-power supply would fluctuate wildly with each passing cloud (not to mention with the sun's daily rise and fall and seasonal ebbs and flows). Solar-power startup > Ausra > , based in Palo Alto, thinks it has the solution: solar-thermal-power plants that turn sunlight into steam and efficiently store heat for cloudy days. >