The green energy future envisions a technological road that leads to an infinite supply of power, independence from potentially hostile nations and an atmosphere cleared of the excess heat-trapping gases that are blamed for warming the planet. The track to this future, however, is full of technological and policy hurdles.

1.  Clean up the existing supply with a price on carbon
2. Store wind and solar energy for later use
3. Limit impact of transmission lines
4. Drive down costs of electric cars
5. Build a portfolio of transportation options
6. Mine the earth for rare minerals
7. Grow energy crops; save the food
8. Bury hang-ups on nuclear waste

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