solar voltaic power

‘Dell of solar’ seeks to make it cheap and user-friendly to get rooftop PV

Today, a company called Sungevity announced the availability of what they’re calling the cheapest solar system in the world: a rooftop solar panel system, fully installed, for $2,000. That’s as much as I paid for my computer. For that price, the average home will save $21,000 in electricity over 25 years — a 45 percent […]

Solar proponents in the Empire State eagerly await new legislation

My colleague, Shaun Chapman, of our New York City office, offers this update on solar policy progress in the Empire State:

Can we shoot concentrated solar power down from space?

CNN takes a look an energy long shot that could change the game on climate change: space-based solar power. The idea is to launch satellites covered with solar panels up into geosynchronous orbit, where the sun is always shining, and beam the power back down to land-based receivers. A 2007 Pentagon study concluded that “a […]

Interview with solar champion Hermann Scheer

NewScientist has a great interview with German Social Democrat MP Hermann Scheer, who chairs the World Council for Renewable Energy and has done as much as anyone alive to spread the word on solar power. Unfortunately, it’s behind a subscription wall, so you can’t read it. But have no fear! I’ll post a big chunk […]

Duke Energy goes (a tiny bit) solar

Yesterday, Duke Energy announced that it will buy the full output of the country’s largest PV solar farm, to be built by Sun Edison in 2009, coming online in late 2010 (all modules complete by 2011). According to Duke, the plant will cover between 100-300 acres in an area that enjoys about 60 percent sunny […]

Neighbors help neighbors get power from the sun

Co-ops are hugely underrated for their potential to make good happen in the world. As an example, the renewable energy co-op I'm a member of in the Northeast, aptly named Co-op Power, had its first "member to member" solar hot water installation this weekend. The power of this co-op is in its 300-plus members' enthusiasm, and it was in evidence on this day as our trained team hoisted two panels into place, which were making hot water by evening.

Arizona Republic calls out senator for not supporting solar

With absolutely world-class solar installation, rapidly growing in-state demand, and prime location next to one of the largest renewable energy markets in the world (that would be California), building a solar industry in Arizona would seem like a no-brainer. I certainly think so. But, more importantly, 87 percent of Arizonans do, too.

The remaining 13 percent appears to include Sen. McCain, who has failed to show up for any of the votes to extend the critical 30 percent investment tax credit -- an issue that's literally make-or-break for large-scale solar in Arizona and elsewhere. Abengoa has signed a deal for a 280 MW concentrated solar power plant with Arizona Public Service, a deal that would bring about $1 billion of investment and 1,500 jobs to Arizona -- and parties on both sides have made it clear that the project's consummation is critically dependent on a long-term extension of the investment tax credit.

This Earth Day, The Arizona Republic published an excellent editorial calling the good senator out.

For Nanosolar, the future is municipal solar power plants

The following post is by Earl Killian, guest blogger at Climate Progress.

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Traditional photovoltaic (PV) is typically installed on rooftops and competes with retail electricity. Over 40 percent of the cost of a system can be in the installation, which must be customized to every rooftop. So technologies that dramatically lower PV cost end up having a less dramatic impact on total residential system cost. So it is natural that the next generation technologies, such as thin films of copper indium gallium selenide (CIGS) printed as ink on conductive substrates, need to look at non-rooftop applications, where the installation of a large solar farm is fairly turnkey.

Nanosolar, a thin-film PV startup, has just announced their vision in their blog and newsletter. They see the best fit for solar being municipal solar plants of 2-10 MW in size and suggest such plants can be done in 12 months, providing a significant advantage over coal or nuclear. Martin Roscheisen, Nanosolar's CEO, writes:

Encouraging solar installations in cities

Harder than it looks.