patrick.net

cheap efficient solar panels with high efficiency battery technology.
maybe 20+ years out to reach the 'cheap' stage...?

JodyChunder says

I predict that in the future, there will be a solution people can take which will allow them to live in any climate almost totally free of discomfort. Discussions about energy efficiency and insulation will be like discussing buggy whips or the most efficient way to crank the tin Lizzy.

robertoaribas says

I end up living in older homes, because they are in the convenient neighborhoods I like, but there are tradeoffs.

In big cities... you simply don't have the option to buy a newer home.. Unless you want to tear down the existing home and build a new one from scratch... That stands out like a sore thumb in the neighborhood of 1950s tract housing. I see this in my neighborhood of 50s tract homes... There's a couple extravagant early 2000s Spanish style homes sandwiched between 1950s cape cods and Eichler's. Looks odd.