[ccamrobertson]

I want the nuclear future with practically emission free power that's 'too cheap to meter'. I want to stop caring about SEER ratings and be able to leave windows cracked all seasons to bring in fresh air. I want power companies that keep brush and trees away from their lines.

Until that happens, I'll hang onto my gas furnace and water heaters.

[audunw]

That future will never come. Nuclear power has several fundamental barriers to scaling, and given that the world population is still growing and the demand for energy per person in the developing is growing, those barriers will become an issue.

The biggest barrier in the end is that if we scale up nuclear by an order of magnitude or two, the heat output will cause global warming effects that approach that of CO2 emissions.

There are panels that can radiate the heat directly to space. But then you have the same area usage problems as solar power.

While some nuclear can be good I think the path to abundant energy is solar, geothermal and energy storage. There is more than enough solar and geothermal energy all around us to cover all our needs, and more. Solar will eventually mostly be in forms that also provide useful shading or act as roofs. Agrovoltaics is a field that’s growing very rapidly.

Going back to nuclear, one path to potential extremely abundant and cheap nuclear power is Helions fusion reactor. It should require a lot less cooling for a given output of useful electric power.

[matthewdgreen]

One of the most depressing opinions on the Internet is "pro-nuclear" folks who are actually pro-fossil fuels.

[archi42]

The future is now: Modern houses around here often feature a "Ventilation system with heat recovery": You get fresh air that's heated using the air it replaces. And just let the system run 24/7. You can also recover/regulate humidity.

These systems can sometimes be retrofit into older buildings (we're doing that for our 1950s SFH), but the necessary piping is often labor intensive to install and hence prices can be insane (we were able to combine it with other measures and significantly reduced costs - I installed pipes while the roof was removed). It's much easier for new buildings of course.

[ccamrobertson]

I've heard about these systems, and they indeed sound really cool. Unfortunately living in a 50 year old home with a patchwork of poorly sized ducts, no attic and a tiny crawlspace this will never be economical for me to do.