29 Jul '11, 8am

Galactic Scale Energy, Part 2: Can Economic Growth Last?

Galactic Scale Energy, Part 2: Can Economic Growth Last?

Tom, politicians can be informed that exponential growth of economy, energy use and population must stop one day but knowing when that day actually arrives is really quite important. Whilst accepting your broad arguments on energy efficiency gains, I believe that massive gains are still there to be had. For example, wind produced electricity is extremely efficient in energy terms and charging a car battery from this source can provide vehicular transport that is 2 to 3 times more efficient than ICE. Add to that legislation that penalises single occupancy journeys and so forth then i think the possibility exists for even larger gains - that of course cannot go on for ever. Similar argument may apply to heat pumps powered by wind or solar sources linked to pumped storage. On the other side of the coin, replacing extreme high ERoEI energy stores with lower intermittent flows ...

Full article: http://www.theoildrum.com/node/8185

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