Dow Chemical has developed a roof shingle that contains thin-film solar power cells and can be integrated into asphalt roofs, which are used in 90 percent of American homes.

Dow executives said the solar shingles can be handled like a regular asphalt shingle and can be nailed right onto a roof and walked on by roofers.

The company will begin test-marketing the shingles in mid-2010 and the company will initially target new home construction.

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Since 2007, the French photovoltaic market has been booming, with close to 500 megawatts of installed capacity expected this year, up from a mere 40 megawatts three years ago.

Most of this growth first stemmed from residential installations that benefited from high feed-in-tariffs for producers and substantial tax rebates for households. Since last year larger installations have also been skyrocketing.

On September 14, the French government released a draft regulation detailing the upcoming changes regarding photovoltaic electricity feed-in-tariffs in France. This draft is pending approval from the Conseil Supérieur de l’Energie (Energy Supreme Council) until late September.

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