2. An Affordable Energy Efficient Home Utilizing Solar and Wind Power and Solar Hot Water
John Gardner, PE

3. New House
Completed May 2004

4. Energy Efficient Residential Construction
Utilizing:
Energy Star Construction
Green Building Materials
Rainwater Collection
Solar Hot Water
Hybrid/Solar Wind System

5. Energy Star Construction
House oriented North/South
South & West walls shaded
Skin Vent wall construction
Continuous soffit & ridge vents
14 SEER A/C
Rigid A/C ducts w/R-8 insulation
Fresh air intake
R-30 attic, R-19 wall insulation
Radiant barrier roof deck
White metal roof
Double pane, Low “E”, vinyl frame windows
Energy Star Appliances

6. Site Orientation
North
West
East
South

7. White Metal Roof
House
Wrap
Radiant Barrier

8. Skin Vent Wall Construction
Top Vent
3/4” air gap
Siding
Bottom Vent

9. Sealed Wall Penetrations

10. Double Pane Windows Low- “E” Vinyl Frame
Minimum SHGC
for Energy Star
= 0.4

11. 14 SEER Air Conditioner

12. Green Building Materials
Low VOC Paint
Engineered Beams
Fiber-cement Siding
Formaldehyde-free insulation
Cork Flooring
Minimal construction waste

13. Minimum Construction Waste
We used ½ of one of these containers

14. Solatube
Skylight

15. Home Performance

16. Summary Ventilated attic Attic temperatures are reduced
Temperature and humidity levels in the attic are dynamic
Energy costs are reduced
Results achieved with standard materials and common building practice

18. Energy Savings
60% less electricity compared to a typical house in our area because of energy efficient construction and Solar/Wind power.
40% less gas compared to previous year after adding Solar Hot Water Heater & supplemental heat
Reduced Carbon Footprint

19. Supplemental Heat Heat Powered Fan Vermont Castings Dutch West
Wood burning stove
With Catalytic
Converter

20. Attic vs.Outside Temperature New Construction Our New House
New House - White Metal Roof
Radiant Barrier
Ridge Vent
Continuous Soffit Vents
Old House - Dark Composition Shingles
Soffit Vents
Inadequate Ridge Vent

21. Recommendations Site orientation is very important
Shading
Prevailing winds
Utilize Energy Star® recommendations
Reduced energy/water requirements
Reduces heat load in the house
Keep the heat out of the house
Reflective roof
Porches
Light exterior paint color

22. Recommendations Adjust the air conditioner properly
Run long enough to remove humidity
Utilize good sealed air ducts
Reduce indoor heat load
Compact fluorescent lamps
Efficient appliances
Maintain good air quality
Non toxic building materials
Fresh air intake
Educate your builder!!!

23. Icing on the Cake Hybrid Solar/wind system Solar hot water heater
Generate 190 KWH/month
Solar hot water heater
Preheat well water to deg. F
Rainwater collection system
Collect 1400 gallons in a 1” rainfall

24. $6.75/Watt installed
Battery backup System

25. 1 KW Bergey XL-1 Wind Turbine

26. 1000 Watt PV Array

27. Solar/Wind Control Center

28. Solar Hot Water Collector

29. Solar Hot Water Circulator

30. Secondary Tank
With Heat Exchanger

31. Rainwater Collection System
Sealed
Downspouts
Storage Tank

32. How much did all this cost?
Base line house cost
Hybrid Solar & Wind
Rainwater collection
Solar Hot Water

33. Added Cost/ft2 to the House 2100 Square feet
Solar/Wind $6.43
Solar Hot Water $0.88
Rainwater Harvesting - $0.87
Total $8.18/ft2
Cost to build the house - $64.00/ft2
$8.18/ft2
$72.18/ft2
Ave. sales price
in our area:
$86.90/ft2

34. How much did it cost?
This? Or
This!
This?
This?

35. Solar Energy
At Work
Everyone
can do it!

36. The Future

37. Thank You!
Home, Sweet Home