Comment on We are helping
missfrizzle@discuss.tchncs.de 1 day agoWhy do we pipe natural gas into homes?
puts on Technology Connections hat
because heat pumps and green energy weren’t a thing in the US until recently!
heat efficiency is weird. electric heaters are 100% efficient, but 1) they’re only as efficient as the generator, and 2) transmission losses add up. and until recently, most power was generated by coal and natural gas. turning those into electricity is lossy, since lots of energy is lost as waste heat. so why not send the gas you were going to burn for electricity directly to the customer?
heat pumps can be 300-400% efficient, since they move heat - from outdoors, into the home - rather than generating it. they can get >100% efficiency even in cold climates! but stupidly the US never bothered make our air conditioners reversible, or every home would have a heat pump by now.
and with solar/wind (for peak) + nuclear or grid storage (for base) power, we can now get rid of natural gas. …once we give everybody heat pumps. …and shutdown our gas generators. …we should probably get on that.
themeatbridge@lemmy.world 23 hours ago
No, I’m sorry, the answe is “profit.” The US has a lot of natural gas, and the people who force it out of the ground bought enough politicians to build pipelines everywherr so we could sell gas to more people. Electric and heat pumps are far more efficient, but the cost per btu of heat is so cheap for natural gas that it doesn’t make sense to switch to electric even when the energy costs are low, and the cost to install a heatpump or geothermal might reduce monthly costs, but it would be decades before it pays for itself. Most people don’t expect to live in a house long enough to reap the benefits of more efficient investments.