@saab,
saab wrote:
I tried to look into it and found the best infos over Denmark.
The houses are about 10% more expensive than a normal house.
If you want a basement it will be very expensive in comparasing with a normal house and you should not have one under a passiv house.
You save on heating and electricity, but your loans are higher as the house is more expensive, so your actual annual bills, taxes, loans, electricity will be a bit under - but not much - than a normal house.
After 10 years you will be able to see the difference.
doing some fast computing what I get is
Me 10 cents per k-hour electric
Sweden 22 cents
Me 3.75 cents k-hour natural gas
Sweden 15.72 cents
Of course we all know that America thrives on cheap to the customer energy, which is a big part of why we waste so much. I got royally burned by buying a very energy efficient tankless (on demand) water heater because at the prices I pay for energy I will never make back the cost of the unit over a cheap old fashioned energy wasting hot water tank. A high efficiency home in America would be the same poor economic decision, if there is not an economic payoff at European energy prices then Americans should not ever consider the matter.
However, the Germans might want to look into such things, as they are already paying 35 cents a kilowatt hour for electric, and thanks to there idiot decision to shut down the nuclear industry they are going way up from that.