Elevation drawings.
The addition is designed for passive and active solar heating and electricity. For passive solar heating the house is oriented to the south. The floor is concrete which will absorb the solar heat during the day and release heat at night. A couple of solar hot water panels will be used to warm radiant tubing in the floor when needed and provide domestic hot water. An electric tankless water heater will backup the solar hot water. The solar PV system should be enough to power the addition (net zero), plus possibly feed surplus power to the main house.
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