ya electric baseboard are expensive to tun
heatpumps are really cheap to run
heatpumps are really cheap to run
But still more expensive than gas in most areas? Unless you get a ground pump etc. which has a much higher upfront cost.
If I was building a new home today and in an area that might get down to 10-15F as a low i'd 100% do heat pumps. The nice part about heat pumps for me is that they might get to temp and run at 10% all day long and keep the heat right at 71. Where a gas will turn on at 69 and heat till 73 and continue that cold/hot cycle
being cheaper also depends on current utility rates also
Using numbers from the non-profit Efficiency Maine, with natural/methane gas at $2.561 per CCF (therm), and electricity at $0.1595 per kWh, standard efficiency heat pumps have better $/MMBtu down to about 0F/-18C, and high performance HPs down to about -10F/-25C, per this presentation:
* https://www.youtube.com/watch?v=OcwIz6heDss&t=39m30s
You'll have to do the math with your local prices. The same channel also has a presentation on dual fuel / hybrid setups:
* https://www.youtube.com/watch?v=T_9P3Dn7is0
Generally: if you're buying new HVAC+D equipment for your home, you might as well buy a heat pump instead of a 'simple' AC unit, and there are heat pumps that can work down below freezing quite well (which is probably good enough for most of the US population, except in the coldest locations).
Places off the current gas grid are also low hanging fruit generally.