Earlier quoted context omitted.
> Compared to what I'm used to in Europe, California is wasting crazy amounts of energy. Poorly insulated homes, old and inefficient AC/heating units, Are you living in a particularly new region? Every time I've seen this come up, the data actually says the opposite: the median US home is better insulated, more recently built and more efficiently climate-controlled. Which is unsurprising, because they're newer, basic…
What fraction of apartment buildings in California have double-pane windows? What fraction of commercial buildings in SF/East Bay have operable windows to take advantage of natural ventilation?
One thing that amazed me when moving to California a couple of years ago was reading ads for apartments where the text would gush about the apartment having double glazing!!!1!!
Meanwhile, in Sweden, triple glazing has been the required minimum since the 90s, and older buildings were forced to install a third pane or retrofit new windows or somehow bring it up to code.
These days you can get quadruple glazed windows, but they offer only a very small improvements to triple glazed, so there's not much use.