Heard about insulation? Windows are tripple glass, walls are bricks+280mm insulation+150mm reinforced concrete. 400mm insulation in roof. Plus there is a heat recovery system for air exchange.
Its close to being zero energy home. Our power usage is below 1800Kw/h a year as well.
So the short answer is yes.
Thank god the rest of the world dont need to follow this example. The people behind the "go green" are laughing all their way to the bank meanwhile the uninformed spend that much money on trying to reach the dreaded "zero energy" spent on heating.
Only to think I have to fork that much cash on concrete walls so they can absorb heat for 6 hours of sunlight a day only to release it in the night is frightening.
Well, that explains your little obsession with power figures. It still baffles me that people that bash FX proccesors dont know you can have the power consumption in check with the correct pstate control software. Well, probably the same kind of people that went full "OMFG LOOK AT THAT IDLE POWER CONSUMPTION, IVFR BEST DESIGN DECISION EVAH!!!one!!eleventy" with Haswell reviews, when it is really because the geniuses at intel finally figured out 800mhz was good enough for a idle pstate clock (and a accordingly low vcore to accompany it, obviously), instead of 1600mhz.
TL;DR: All that effort to dismiss FX's load power figures go to the trash bin the very moment most Intel users wont even try to optimize their pstates clocks and volts for better efficiency. Pay more and plug and play are the rules for the enthusiast these days.
EDIT: Okay, now I just see blatant lies. Insulation is cheap, yep. Normal ammounts of insulation, that is. Add the absurd 15cm concrete walls (which is not cheap, ANYWHERE) and there goes your recipe to spend truckloads of money for little thermal gain. Thermal insulation, like most things in life, isnt a linear equation. And after your sweet spot (which, for the 90% of the people, is probably 26cm of insulation less than what you supposedly have), you just start to throw money away.
For example, triple glass windows are a lot pricier than double glass one, which are already a lot pricier than single glass ones. Truth to be told, if you live in such a harsh climate and sunlight is sparce, you are better off reducing you windows dimensions and changing their proportions so they become absolute squares, because area is only part of the equation, and on windy climates the ammount of openings in a window and their perimeter become absolutely the first problem regarding thermal insulation. There a lot of design decisions that can be made to get better thermal insulation in your home than going to spend that much money in insulation, concrete walls (ROFL, still cant stop laughing on this one) and triple glass windows. Likewise, with some tinkering you can have your FX power consumption in check, no need to spend that much money on an intel platform only because you are lazy enough not to touch the pstate's clocks and voltages.
EDIT2: Oh wait, it is REINFORCED concrete, even more hilarious. Now gotta expend another truckload of money just to make sure you dont have any thermal bridges because of all that reinforced concrete, LOL.