While a superinsulated house may deal effectively with
heat loss it does not solve the issue of energy needed
for lighting, refrigeration, and other utilities.
If you are located off-grid, or simply want to reduce
dependence on outside sources you need to look to Solar
Photovoltaic or wind.
Personal experience in the northeast suggests that Solar
Panels are more dependable than a wind generator, but
your mileage may vary.
During spring, summer, and fall the industry recommendations
for mounting and alignment should be followed.
However, during those periods of time when there is
persistent snow cover personal experience has shown that
a VERTICAL orientation of the solar panels is preferable.
The most obvious reason for this is to prevent snow buildup.
It takes very little snow on your solar panels to drop energy
production to zero.
But there is another VERY good reason.
Snow reflects sunlight extremely well.
If there is a more or less horizontal surface in front of
your solar panels that extends out in front a distance at
least equal to the height of your panels, and that surface
is not shaded, you will increase panel output to a level
above what you would receive if the panels were angled to
face the sun directly.
This takes you back to the initial mounting of your solar
panels. Roof top mounting will NOT likely be the best choice.
The panels should be mast or rack mounted so that panel angle
may be adjusted from the optimal summer angle to vertical,
and panels should not be a great distance off the ground.
Even if there were NO reflection of light from snow covered
surfaces in front of the vertical solar panels, 70 percent
of the direct sunlight is still far better than the zero
percent you will receive when your panels are covered by a
few inches of snow, and remain that way for weeks on end.