Ways to become more energy efficient and sustainable fall into general categories:
- Those that are commercially viable - business can make a profit from.
- Those that have no commercial possibilities.
The first eventually takes care of itself - business publicizes them and makes them available.
This is for the second category - common sense free or inexpensive things about our homes we can improve to save energy.
Blog style listings such as this have a bad reputation. The become vulgar, argumentative, and/or commercial