by Subjectivist » Wed 08 Nov 2017, 14:32:16
$this->bbcode_second_pass_quote('Outcast_Searcher', '')$this->bbcode_second_pass_quote('Subjectivist', 'I') remember hearing this same theory since at least 1979 when President Carter wore sweaters on TV and told everyone to turn down there thermostats in winter. Didn't work too well back then, and now I live in a relatively well insulated house with double pane windows with LED bulbs in all my light sockets.
Or, we could try having an attention span worthy of a human, instead of a gnat.
Conservation and efficiency, when applied industriously over time, have a HUGE cumulative impact. Like modern well insulated houses and LED bulbs today, compared to very poorly insulated houses and incandescent lighting technology of the 50's. Such changes take a lot of perseverance and occur over decades. But without the effort, will, and patience to realize the benefits of such changes (allowing incremental improvements to multiply over time to a huge cumulative result), we might get far less of them.
So should we pretend efficiency gains don't happen, just because they're not gigantic in the short term? Or that conservation of resources doesn't matter, just because it doesn't magically solve all problems in the short term? I don't think so.
You are making my point for me. Over the last 40 plus years we have been making energy efficiency improvements. It isn't 1977 any more, the low hanging fruit of efficiency improvements have already been done. The issue is, the greater your efficiency the less return on investment you get from improvements. Most furnaces sold today are 85% efficient or better. Upgrading from 55 to 75 is a huge improvement. Upgrading from 75 to 90 is a substantial improvement. Improving from 90 to 95 or 97 is much less of an improvement because the law of diminishing returns always holds true.
Same with lighting, switching out my incandescent bulbs to LED cut my energy use for lighting by about 85 percent. It is hard to get much more efficient than a source that gives me full spectrum light at even higher efficiency would be hard pressed to provide more efficiency at the cost of an LED or lower. Again the law of diminishing returns.
Additional insulation is also a great addition to a home, but the cost of added insulation vs the pay off time in lower winter heating bills also runs into the law of diminishing returns.
Point being, if you are building a brand new home with excellent insulation, high efficiency furnace and all LED lights where do you go for greater efficiency?