Energy and Thermal data for Mountain House - WEL0990

Mountain House : White Salmon, WA USA

Net-zero passive solar house with radiant floor heating and cooling.
5 ton w2w closed-loop GSHP system with integrated solar thermal assist from roof panels that simultaneously provide 240 gallons of domestic hot water (up to 160F).
16.2kW grid-tied solar electric system (100% net metering) with 21 kWh LiFePO battery backup to handle any local power outages.
1725 gallon in-ground cistern for irrigation with constant-pressure pump.
Total utility costs: $250 per year (just the base charge to stay connected to the grid) with enough solar energy to support one EV for 12k miles per year.

More WEL0990 data.