Waste restaurant grease fueled diesel cogenerator to provide heat and electricity - w/ diesel fuel for back-up.
Heat keeps the pool and spa available year-round.
Heat also provides potable hot water, and keeps the in-floor radiant coils toasty. The electric provides power for water to water source heat pump if neccesary for more capacity.
Boot warmers. Heated towel racks. self melting driveway and sidewalks.
AC in the garage and workshop.
Chilled water for AC with individual room fan coils. AC condenser dumps heat into the pool,spa,and potable hot water.
Since waste restaurant grease is biomass, utilities are required under PURPA to purchase excess electricity - though often at a reduced rate. Some states have net metering laws that allow you to spin the meter backwards - and approximate zero bills.
Highly efficient envelope - probably foam in place of some sort in the walls. 2X6 plates top and bottom with offset 2x3 vertical sticks to minimize conduction of heat AND sound.
Low-e glass, triple glazing windows, with some thought put in to how to connect 'em to the structure to eliminate heat/sound infiltration. I haven't met a window to structure interface yet that I'm pleased with.
A lovely female computer science major (think the chick in wierd science) to manage the controls and maintain a satisfied customer.
Locate the whole mess on a lot....say 300 acres.... with a sandy beach on Lake Superior somewhere within a half hour drive of Houghton or Marquette.