I just recently received an update of energy use over a 4-year period from Ward Lutz, one of the first projects to meet the 1000 Home Challenge. Ward met the 1000 Home Challenge in 2010, after he completed a deep energy retrofit of his modest home in Urbana,OH. That was just the beginning. He has continued to invest and monitor and learn and share the results. The year after he met the 1000 Home Challenge he added PV and a ductless heat pump, and has achieved net zero energy site energy ever since.

Posted under Ward's case study is a spreadsheet summarizing 4+ years of energy production, use, and net since the PV array was installed. His annual use has ranged from 4.9 to 7 kWh/day. Ward's net energy average use has ranged from +3.9 to +4.1 kWh/day. 

Ward has been willing to experiment, and is committed to making sure that he has feedback so he can evaluate and learn from the results The "outdoor unit" of his ductless heat pump is located in his crawl space - a space that is insulated with R-40 between the the crawl and living space. Data from both a cooling and heating season is posted - What better way to warm up (and dry out) a crawl space in the summer than to run the AC?  

Check out the case study, and presentation given at Data Not Dogma, as well as his home's performance data. 

http://www.thousandhomechallenge.com/case-studies

Views: 137

Latest Activity

Coby Rudolph commented on Jim Gunshinan's blog post What Are the Nation's Best Utility Energy Efficiency Programs?
"Interesting. Something needs to change when 30% of the exemplary programs (16 out of 53) saw…"
5 hours ago
Dimitri Mal joined Bob Krell's group
Thumbnail

Healthy Indoors (IAQ)

The Healthy Indoors group is focused on indoor air quality (IAQ), mold, moisture control, radon,…See More
6 hours ago
Dimitri Mal joined allen p tanner's group
Thumbnail

Energy Auditing Equipment for Sale, Trade or to Purchase

Discuss the pros and cons of the equipment you are interested in prior to purchase. Post equipment…See More
6 hours ago
Jacob Corvidae replied to Ann Edminster's discussion New(ish) ZNE publications available
"Great to see these Ann. Thanks for sharing. "
7 hours ago
Jacob Corvidae commented on Pearl Certification's blog post New Study Measures Impact of Energy Efficient Features On Home Sale Prices in Phoenix
"Congrats folks - great to see that moving forward. We'll look forward to the…"
7 hours ago
tedkidd commented on Jim Gunshinan's blog post What Are the Nation's Best Utility Energy Efficiency Programs?
"Midwest energy is the only program I've run across that's worth a damn. VT and Austin…"
7 hours ago
Jan Green commented on Pearl Certification's blog post New Study Measures Impact of Energy Efficient Features On Home Sale Prices in Phoenix
"The link to the study doesn't work. "
8 hours ago
Jan Green commented on Pearl Certification's blog post New Study Measures Impact of Energy Efficient Features On Home Sale Prices in Phoenix
"Excellent forward thinking partnership.  Gaining momentum with this partnership is HUGE!…"
8 hours ago

© 2019   Created by Home Performance Coalition (HPC)   Powered by

Badges  |  Report an Issue  |  Terms of Service