The Evergreen Home in Lake Oswego demonstrates a reliable deep energy design focused on total electrification and long-term resilience. It features a high-performance building envelope with 24-inch framing, external insulation, efficient windows and precision air sealing to minimize energy loss.
A solar roof supplies roughly 50% of total energy needs. Battery backup supports grid time of use price savings and can power the house for 1-2 days. Inside, the home has a heat pump, ductless ventilation for fresh air, an induction range and a high-efficiency water heater. A solar array and battery, a heat pump and an Energy Recovery Ventilator independently support the 2025 ADU retrofit.
Home Energy Enhancements
- Tesla SolarTile Roof – 10.4 kW capacity
- Two Tesla Powerwall 2 batteries- 27 kWh of storage
- High-efficiency CX34 Hydronic Air-to-Water Monoblock Heat Pump
- LUNOS ductless HRV system for fresh air exchange
- Sanco2 Split CO2 heat pump water heater, smart hot water recirculation
- Professional AGA 48-inch induction range
- 24-inch framing with external insulation and air sealing for a high-performance envelope
Financial Impact
- Main home: $72k with payback in 6 years
- ADU: $40k with payback in 16 years
Installation Resources
- Power Northwest: powernw.com
- Heatpump Store: theheatpumpstore.com
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