LED lighting is on the edge of possible-for-houses these days (as in, you can get but it costs lots); almost certainly going to be masses better than fluorescents. So a brighter but also more efficient future there.
I also prefer showers to baths (for speed) - I find that putting the plug in when taking a shower (our shower is over the bath) gets me a bath with maybe 2 inches of lukewarm water in it; compared to taking a bath which gets me a bath almost entirely full of very hot water. So I'm confident that showers use less water than baths.
Showers that do their own heating (with electricity) are possibly bad, because gas water/heating is more efficient; because electricity generation is done by heating water with gas and has inefficiencies. Except that if you want to move away from using *any* gas then electrically heating water is better (because electricity can come from wind farms and nuclear power).
The passive solar heating idea is probably the best bet for water-heating efficiently. But it's a bit expensive.
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timeasmymeasure
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Date: 2008-07-01 11:20 am (UTC)I also prefer showers to baths (for speed) - I find that putting the plug in when taking a shower (our shower is over the bath) gets me a bath with maybe 2 inches of lukewarm water in it; compared to taking a bath which gets me a bath almost entirely full of very hot water. So I'm confident that showers use less water than baths.
Showers that do their own heating (with electricity) are possibly bad, because gas water/heating is more efficient; because electricity generation is done by heating water with gas and has inefficiencies. Except that if you want to move away from using *any* gas then electrically heating water is better (because electricity can come from wind farms and nuclear power).
The passive solar heating idea is probably the best bet for water-heating efficiently. But it's a bit expensive.