Why awe imminently replacing fossil fuel? (was 1 GW/day of new ca

> Over the next 30 years we have to replace fossil fuel.

What makes you think that? Have you read this?:
http://thebulletin.org/web-edition/columnists/kurt-zenz-house/the-limits-of-energy-storage-technology

http://tinyurl.com/apj347

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The bottom line is that nature has given us hydrocarbons in the form of fossil carbon and biomass, and their energy-mass and energy-volume densities are superior to the thermodynamic limits of nearly all conceivable alternatives. Thus, it's quite likely that hydrocarbons of one form or another will be humanity's primary energy storage medium for quite a long time.
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