“The growing scientific consensus is that we have perhaps forty years to reduce drastically our GHG emissions below current levels to avoid catastrophic consequences. In the meantime, conventional wisdom has it that firm power services will continue to be supplied to the world's power grids predominantly by coal (eventually with carbon capture and sequestration), nuclear and large hydro (and to a lesser extent by natural gas) for decades to come, with non-hydro renewables growing exponentially over that period but continuing to play the marginal, non-firm role they've played almost exclusively to date. Yet...
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