For more than 40 years, scientists have dreamed of collecting the sun’s energy in space and beaming it back to Earth. Now, a host of technological advances, coupled with interest from the U.S. military, may be bringing that vision close to reality.

Despite the enormous promise of solar power, the drawbacks of the technology remain significant. People need electricity every day, around the clock, but there’s no part of the United States that is cloud-free 365 days a year — and no solar radiation at night. You have to find some way to store the energy for those sunless periods, and there’s not yet a large-scale way to do that.

Moreover, the best locations for solar arrays — the deserts of the American Southwest — are far from the centers of population, so even under the best of circumstances you’d have to send electricity many hundreds of miles through transmission lines that don’t yet exist.

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NPR’s On Point never disappoints, and their show with Christopher Steiner, author of $20 Per Gallon: How the Inevitable Rise in the Price of Gasoline Will Change Our Lives for the Better was no exception. Steiner’s thesis is that as liquid hydrocarbons become all the more difficult to naturally extract and regulation makes them all the more costly to refine and use, prices will inevitably rise. At $20 a gallon, we might not recognize our lives…all for the better, says Steiner.

People will live and buy their locally-grown produce in mixed-use developments clustered around high-speed rail lines. In Steiner’s view, $6 a gallon is an inflection point that begins to redefine the way we live our lives. But, will innovation (or the US government) ever allow prices to remain at that level? Not according to Mark Mills, co-author of The Bottomless Well: The Twilight of Fuel, the Virtue of Waste, and Why We Will Never Run Out of Energy.

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Even the CEO was initially skeptical about BioPetroClean’s simple and effective solution for cleaning up industrial wastewater, but it works; and now Dow Chemicals is onboard.

The idea that microscopic bacteria could cheaply and efficiently cleanse oceans of industrial wastewater may seem far-fetched. But it is just this premise that launched BioPetroClean, a Texas-based cleantech company with research-and-development facilities in Tel Aviv.

In fact, the technology is so effective that $57.5 billion industry giant Dow Chemical just announced a global commercial agreement whereby it will market and distribute the Dow-BPC Water Treatment System internationally. The agreement includes exclusivity across significant oil drilling and refining markets.

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Oil exploration and production technology may hold the key to secure CO2 storage, a report published by the CO2 Capture Project (CCP) today highlights. The report provides a definitive treatment of the CO2 storage subsurface technical issues and how oil and gas experience technology and protocols are available now to address them.

Entitled “A Technical Basis for Carbon Dioxide Storage” it provides guidance on how to assess and manage industrial-scale CO2 Geological Storage (CGS) projects through appropriate site assessment, operational parameters and monitoring. The report covers four main areas: site selection; well construction and integrity; monitoring programs; and development, operations and closure.

Scott Imbus, CCP Storage Team Leader said: “With this report, the oil and gas industry is transferring decades of experience and nine years of technology development to the fledgling industry of CCS. We hope this will provide the critical boost to turn the potential of CCS into a practical reality.”

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Some projects are just too big to let the private sector handle them alone. Updating our aging one-way system of centralized power production to a smart grid is one of those projects. Left mostly to its own initiative, the energy industry has done very little in technology innovation during the past fifty years to make the grid more efficient and to accommodate distributed power production.

The need is so clear that even a group that supports limited government agrees that building a smart grid that conserves energy, integrates renewables, and diminishes peak power requires the guiding hand of the federal government.

The Lexington Institute has published a paper that neatly summarizes the smart grid challenges, and concludes that “Just as the grid of today required presidential initiative, the smart grid will take a high-level policy push, too.” The public policy research group, which says it “actively opposes the unnecessary intrusion of the federal government into the commerce and culture of the nation,” adds that “Smart grid will most likely require federal, state and local government incentives” and that “Policy action is worthwhile to move promising technologies closer to full adoption.”

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It is understandable why some utilities might be hesitant to embrace smart grid technology. It’s expensive (Repower America says implementation will cost upwards of $400 billion) and at the same time will reduce their ability to sell their core product (energy).

Getting the utilities and regulatory agencies on board requires ample amounts of carrots (financial incentives) and sticks (limiting carbon emissions), according to energy efficiency experts Portland Energy Conservation Inc (PECI).

PECI’s new report “Wiring the Smart Grid for Energy Efficiency goes into deeply depressing detail about the many formidable challenges to implementing the smart grid. Among the toughest to tackle are that buildings are ill-equipped to participate in demand response systems, and the near total lack of interoperability today between grid equipment and building energy management tools. There’s also a lack of university and professional training programs to fill the gaping hole in HVAC engineers who can maximize energy efficiency programs.

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The “locavore” movement is big, especially in California. With the bounty of food found locally in the Bay Area, living off the land — and sea — is not only possible, but also a delicious exercise.

But there’s another, less obvious, revolution brewing here in the Bay Area: the “locavolt” movement. In response to high gasoline and natural gas prices, global warming and an increasingly unstable, scary world, people are looking to generate power right in their own homes and neighborhoods with free energy from nature.

Technology advances in computers, telecommunications, generators, inverters, and even cars, are all giving the locavolt new tools to harness renewable energy and lead a fairly normal life.

Within the next few years, plug-in hybrid cars in California will be able to serve as a mini-power generator for your home and store renewable energy from your solar photovoltaics system or your small wind turbine. Plug-in hybrids may also help balance out a smarter electricity grid capable of easily sending power back and forth between generators and consumers, much like we send and receive e-mails on the Internet today.

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I remember being a senior in high school using Prodigy (!!) to connect to the Internet and thinking that this “Internet thing” was never going to catch on. It was way too slow and I felt like a loser for spending so much time not really accomplishing anything. I had no idea that the Internet was slowly and steadily on its way to transforming all other forms of entertainment- music, movies, toys, and even books to become a gateway into more sustainable industries.

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Barack Obama promised change and hope. He’s bringing it when it comes to the mercury control industry.

If you haven’t heard, the new president has directed the U.S. Environmental Protection Agency to drop an appeal of a Bush administration mercury control plan for coal-fired power plants.

Coal, the backbone of America’s electrical grid, runs about 1,100 plants in the U.S., but also spews out about 48 tons of mercury per year. The element is a potent toxic substance that affects brain development. It settles in our rivers and lakes and most people are exposed to it by eating fish.

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