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The problem with Nuclear is the radioactive wastes, the problem with Coal (and tar sands etc) is the great cost of cleaning up the pollution - for example here is a recent report on up Coal Powered electrical generation from Australia.

The vast program of capital spending on these or any renewable energy production system that would match our demand for energy is also not easy to find even in the wealthy countries. Sola Roof however is able to deliver shelter (comfortable and productive controlled environments) at the same time and for the same expenditure - a very unique advantage.

PV is still too expensive and Wind will not apply to all sites - so, after that overview, hopefully it is more clear why building integrated solaroof that uses photosynthesis is a best choice for all communities. We can build our ecological habitat and cover our energy needs in one step.