Comment by Broken_Hippo
4 days ago
Actually, the US uses more power during the day in the summer - there is a dropoff in the night for both summer and winter. Night time use is somewhat similar. [1]
Cooling takes more energy than warming, so the summer daytime use is higher. Summer = warm evenings. I'm from Indiana - it was almost always cooler at 10am than 7pm, even in the winter. It takes time to heat up or cool down. I'll also mention that nights and weekends use less power because business and industry tend to shut down during these times.
Which would somewhat logically mean that despite the efficiency being worse during winter, it isn't as much of a strain because power demands are less.
Cooling doesn't really take more energy than warming, because cooling is warming if you have a heat pump. Are you not just observing here the usage of fossil fuels for heating, which is extremely common?
How common are heat pumps in the states now - and is this something your average worker can afford? I looked into it some time before I moved - and before they were as popular - and installation costs were prohibitive. Moved to Norway over a decade ago. Heat pumps are popular but most homes don't have them here, especially in the cities. I can't imagine that rentals are upgrading, considering its rare to even update insulation in the cheapest rentals.
Are heat pumps common for factories and offices, which account for a lot of energy usage during the week?
Anywhere they aren't common, cooling generally is going to require more traditional methods and the energy cost is greater than just heating. If it were the other way around, poor folks would use a window air conditioner to heat. Cooling pretty much always creates warming - which is the reason it is vented outside.
The energy use I linked to doesn't actually consider where the energy comes from - just the use itself. These methods aren't going to use more or less energy depending on where the energy comes from. Heat pumps would make less usage due to efficiency.
Heat pumps are in most new construction in major cities now - Seattle's required them for years, other cities do too. They aren't significantly more expensive than any other method now, especially with a lot of local utility rebates.