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08 Dec 2011: Cost of Solar Energy
Lower Than Usually Reported, Study Says

The cost of photovoltaic solar energy systems is not nearly as expensive as some energy analysts have projected, according to a new study from Queen’s University in Ontario. In fact, Queen’s researcher

A Solar Panel on Every Roof?
In U.S., Still a Distant Dream

Daunted by high up-front costs, U.S. homeowners continue to shy away from residential solar power systems, even as utility-scale solar projects are taking off. But residential solar is having modest growth.
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Joshua Pearce predicts that solar photovoltaic systems are approaching the “tipping point” at which they will be capable of producing energy at about the same price as traditional energy sources. In a study published in the journal Renewable and Sustainable Energy Reviews, Pearce says that many recent analyses of the costs of photovoltaic solar power — which typically include factors such as installation and maintenance costs, finance charges, life expectancy of the system, and the amount of electricity — have ignored the 70-percent reduction in solar panel costs since 2009. While one 2010 study calculated the cost at $7.61 per watt of electricity produced, Pearce says the cost is actually less than $1 per watt for panels purchased in bulk, although system and installation costs can vary significantly. Pearce also created a calculator to determine the cost of solar power, which is available for download.

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South African photojournalist Adam Welz documents the harrowing relocation of six white rhinos to a region that has lost all its rhinos to poaching. View the gallery.

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