Lol. I think keeping my house at 50-55F through out the past couple of months would be considered pretty green, don’t you?
My parents visited this last weekend and I was in shorts and a t-shirt with the thermostat at 68-72F. They just moved from FL, so them being cold is to be expected
Even if your in a cave and want to light a fire to warm yourself up, that is still bad for the environment, so no you are not frugal enough to save the planet
Seriously though, unfortunately since your house is heated by electric boards, there is nothing you can do to lower the usage much more. You need to switch your heating source to either nat gas or a heat pump, but a heat pump would still need supplemental heating, which is normally electric.
They do have ductless mini split heat pumps, so that may be an option of your house doesn’t have forced air already.