It's a sad situation - the fact is, so much of our "Green" energy sources are generally inefficient. Wind power is a prime example, a blight on our landscape and general eyesore built by companies because they get vast amounts of subsidies from our government. If they had to fund them as a business proposition they wouldn't be building half as many. Being in the power industry for some years now it makes me laugh - the total output of all the wind turbines in the UK could be produced by one Gas Turbine!!!!!!!! Yes it's burning a greenhouse gas, but the overall impact is minimal. Nuclear power is one "green" method of producing efficient power in sufficient quantities to make it viable. But the down side is (as per this discussion) is the waste - if we put in the same amount of research funding that wind, wave and solar energies receives then we may find an acceptable means of containment. 
