Another long story. Energy can be obtained from trash, but not from any trash. The trash must be pre-processed; it has to contain a certain fraction of plastic. Then there are the problems with the emissions, the fact that a landfill is still needed. One of the consequences of peak oil, anyway, will be to reduce the amount of plastic in domestic garbage. That will reduce the capability of incinerators to generate energy and may make plants become net energy absorbers rather than producers. So, energy will be needed for incinerating waste. Another nice negative feedback effect that may rapidly make incinerators as obsolete as steamships. Not that it would be a bad thing altogheter.....

Despite my best efforts at recycling, reducing, and reusing my bin still ends up with a fair proportion of soiled food packaging - plastic or paper. It does seem to me to be a waste to landfill this calorific material. I assume WTE plants have some capability to contribute towards peak capacity unlike most renewable systems?