Nate Kline's post on The Green Economy Post summarizes the many tax credits and incentives available for the installation of a green roof. Several locations including NYC, Chicago, LA, Minneapolis, Philadelphia, Portland, San Francisco, Seattle and Washington DC. Plus, there are proposed programs for Boston and the state of Pennsylvania as well as a Federal bill that proposes a 30% tax credit for green roofs that cover at least 50% of the roof area.
A study by a scientist at the Lawrence Berkeley National Laboratory, from last year suggests that white roofs across all major cites would curb climate change. See the story here on the Christian Science Monitor.
Clearly, either greater use of both white and green roofs has major benefits and is comparatively inexpensive. Of all the things that can be done with the tops of buildings, it's a shame that black is such a prevalent choice. There are several green roofs here in the Raleigh/Durham area and a few people I know have gone with white for their home roofs. One person I've spoken with has painted black shingles with white acrylic paint and is very happy with that. I'd love to hear from anyone planning a green roof in the area.
I also noticed in Nate's own GreenDldgBlog.com a recent story that neatly lists all the various tax incentives already in place for energy efficiency measures. This is useful for anyone considering energy efficiency renovations.

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