scape the topsoil off
dig a pond
use the dirt for a berm
cover the berm with the top soil
seed the berm with wildflowers.
or blackberries!
stock the pond with fish that eat mosquitoes.
later you can eat the fish.
put your windmills on top of the berm.
as far as the berm design goes
the only one i have seen up close was on a low energy use house
that my design class toured way back in the first energy crisis.
it was a crescent shape.
the house side started maybe 5 feet from the foundation.
it sloped rather steeply up until it was a little higher than the eves of the roof.
the back side(windward) sloped more gently at an angle very much like that of the roof itself.
i believe the idea was the wind velocity would be maintained .
air up would flow up and over the house without dumping its snow.
i think the earth berm will really make a difference for you as far as the energy drain on your house.
but you should study it thoroughly(successful ones not just theory) so that you don't make a problem for yourself.
you don't want the gap to fill with snow and you don't want a lot of erosion in spring.