Someone entered this topic in an online forum to which I subscribe:
The main problem with lowering the carbon level is down to individuals, to behaviour, to good citizenship and that is the biggest challenge of all… how many times to you see careless behaviours? how do you change that?
I just had to respond. I think this attitude is the best way to make sure that end in the end, nothing good happens. I’m reprinting my comment on the topic below, unedited (even though you all know about passive houses already).
Individual action will not solve the problem. For example, my hobby horse is highly energy efficient buildings such as the Passive House approach. They use 80-90% less energy than a conventional house, at typically 5-10% higher cost to build. Simply building only passive houses and remodeling to the passive house standard for the next ten years would reduce the U.S.’s carbon footprint by at least 20%. In fact, because the energy use is so low, there will be lots of excess solar electricity generated, so our carbon footprint might even go lower due to the compounding effects.
But people won’t build them without a) a large-scale education campaign for both builders and home buyers, b) incentives for builders and owners from cities, counties, and states, and c) a compelling business case for the suppliers of the highly efficient windows and mechanical systems required.
Passive Houses “tunnel through” the efficiency cost barrier to achieve their benefits at a relatively low additional cost. But even though they have a great cost/benefit ratio, they’re not going to take off without those structural changes. That’s why, instead of becoming a builder of passive houses, I’m becoming a lobbyist for passive houses. Builders can make a difference of 2-5 houses a year. As a lobbyist, I can make a difference of 100-1000 houses a year, or more.
Individuals weatherstripping their houses, and taking shorter showers, can slow down CO2 growth a bit, but turning it around takes large structural changes. Yes, those are driven by individuals, but they are not individual changes.
I use passive houses as an example, but there are lots more in other areas. Same is true for car use – it will take structural changes for people to be able to live nearer where they work. Or for food energy use – most people are not going to be able to garden enough to make a difference in the U.S.’s agricultural energy footprint – that’s going to take big changes in commercial ag. Some of those changes are happening, and that’s awesome, but it’s not going to happen by you putting in a garden, no matter how good and useful a step that is.