>60% of a home's energy usage is in the form of heat. 42% for space heating and 18% for water heating. and 90% of all statistics on the Internet are made up.

>60% of a home's energy usage is in the form of heat. 42% for space heating and 18% for water heating. and 90% of all statistics on the Internet are made up. Unless you meant to say, "climate control" instead of space heating, this is just not true. You can't just take the "average" of what people use energy for in a country like the US, and expect it to be close to true for everyone. For those of us living in the South, Southwest US (it was 65 and sunny here on Christmas day), energy usage is much higher for air-conditioning than for heating, and you can't just take a passive solar system and expect it to cool your house down. Yes, passive solar heating can be great for some people, but not for everyone. Geography matters.