3
1
2
4 5
1) Solar water collector
2) House heating and clothes dryer
3) House heating
4) Newer photovoltaic system: 4 KW
5) Older photovoltaic system: 2.8 K
Note that we use no fossil fuels for heating, cooking, or hot water.
- Heating: about 50% from a geothermal heat pump; about 30% from direct solar; about 20% from a wood stove ( 0.8 cords/winter)
- Ground source heat pump:
- Cooling: heat
exchanger in well
- Water heating:
solar; second heat pump
- Lights:
fluorescent and LED fixtures
- Cooking,
refrigeration: all electric appliances
- Commuting
900 miles/month:
2012 Nissan Leaf (electric; no gas)
