“Whiskey is for drinking; water is for fighting over.” Often attributed to Mark Twain, whoever said that seemed to have quite a bit of foresight, something the mainstream cleantech community is only recently warming up to.

The fights over water use facing utility scale solar thermal projects in the desert Southwest may have a lot to do with opening the eyes of the clean-tech community, but the sector’s challenges and opportunities are much broader than that, as scores of Californians, Middle Easterners, and Australians will attest.  So why, with the problems so immediate and demand remaining strong in the $58 billion annual market for water technologies, has water investment as a percentage of venture investment declined since 2005?

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How do you force a company that earns money by selling power to reduce its sales? This conflict of interests is what the state of California faced in the 1970s and the result was the formation of the California Public Utilities Corporation (CPUC) an agency that oversees the publicly owned utilities in the state and regulates the amount those utilities can charge. A major goal for the CPUC? Disincentivize the utilities from increasing sales.

Energy use across the United States has grown steadily both on a per capita basis and in total for the last 30 years. California is one of the few states that has been able to control its per-capita energy use over the last few decades. In fact, the per capita utility use curve in California has been almost completely flat since the late ‘70s which many find amazing considering the overwhelming increase in technology in our lives. The way California has done so is as startling as it is strange: beauracratic wisdom.

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Imperial County, tucked away in the southeastern corner of California, has long suffered from perennial unemployment rates exceeding 20 percent.

Yet Imperial County is also home to the “crown jewel” of all geothermal steam resources in the U.S., making it a prime spot to showcase how renewable energy can help spur the new green economy so enthusiastically touted by the Obama Administration.

Late December, the California Public Utilities Commission (CPUC) approved the construction of the $1.9 billion Sunrise PowerLink transmission line, which could send clean electricity from Imperial County to San Diego. However, the Center for Biological Diversity (CBD) petitioned the California Supreme Court last January to review this decision, citing San Diego Gas & Electric’s (SDG&E) refusal to guarantee that the transmission project would be reserved exclusively for renewable energy resources.

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First Solar, a maker of thin-film solar cells, has signed an agreement with Southern California Edison to sell the utility 550 megawatts of electricity produced by two massive photovoltaic solar farms in the Mojave Desert.

The plants, expected to go online by 2015 and produce enough electricity to power 170,000 homes, would be built on federal land set aside for such solar projects.

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“We will have solar energy as soon as the utility companies solve one technical problem – how to run a sunbeam through a meter” — anonymous

There is a lot of buzz going on these days about the role solar will play in the current clean tech revolution occurring around the world. Many people find solar interesting but don’t know how it works, why it is gaining so much popularity and how they can get involved. Below are some of the resources I have used to make the world of solar easier to understand.

First question to answer: What is solar? For this you should read the wiki description of solar power.

Now that you understand some of the history of solar power, you may want to understand one of the most common ways that solar power is converted into electricity, for this you should read about photovoltaics or PV.

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The Pacific Northwest just finished four days of triple digit temperatures, which put the heat on renewable energy sources to keep up with demand. Just as records were being set for power consumption, wind power generation slowed due to the calm air from the locked-in high pressure system.

The extreme weather highlights the reality that wind — and to a lesser extent hydropower — may not be a panacea for power production.

Southern Washington and the Portland metro area had a record breaking streak of warmth that pushed energy demand to record highs, but the high pressure system also featured calm breezes. The local utility Bonneville Power Administration (BPA) had to quickly balance the reduction in wind power with increases in hydropower.

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