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Politics : Politics of Energy -- Ignore unavailable to you. Want to Upgrade?

To: Eric who wrote (23401)	9/15/2010 6:14:25 PM
From: TimF	Read Replies (1) \| Respond to of 86352

Fusion, we could only wish. Forty years ago when I was a physics major in college we thought we might solve the "fusion problem" by the 1990's. It's been "20 or 30 years away" for a long time. I don't expect it in another 20 or 30 years. Notice I put it together as an example with solar power satellites. "20 to 30 years", is both too low, and not a wide enough range. I'd say more like 40 years to several centuries. Have you checked out how much it costs to put one pound of something into orbit? I don't assume it will always be so expensive. Notice I said "Eventually perhaps..." The eventually (and other comments) are about how its a long term, perhaps very long term, idea. The "perhaps" signifies uncertainty. It will all be done with solar power on the ground in the long run. Solar power on the ground needs to be backed up by other sources.