Making Zero Net Energy a Reality | U.S. Green Building Council
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Making Zero Net Energy a Reality

GBCI: 0920013574

Join USGBC Redwood Empire for a program on making Zero Net Energy a reality, with a closer look at the Multifamily sector. Sean Armstrong from Redwood Energy will present on designing and delivering ZNE for new construction and retrofits, as well as the business case for all electric homes.
Eligible for 2.5 CE HOURS.
  • 2.5 CE

Rating system: v4



Sean Armstrong of Redwood Energy has co-designed the largest portfolio of all-electric, 100% solar powered residences in the nation, focusing on the production of low-income solar powered housing and converting the lessons learned from the large affordable housing market to the smaller field of ZNE market rate housing. Sean’s career in “Zero Net Energy” affordable housing began 2005 when, as Project Manager with a large developer, he led the design of the nation’s first 50% solar powered apartment complex, and the first to give solar electricity benefits directly to tenants.

Using a novel regulation from the IRS in 2009 that solved the “split incentive,” so Owners of low-income rental housing can recoup their investments in efficiency or solar power; this is why regulated affordable housing is now the largest developer of true ZNE housing (all-electric, 100% solar powered) in the U.S. is rental apartments and houses, not single family residences for the wealthy. In addition to managing the growing staff at Redwood Energy, Sean runs the largest study of monitored end loads (e.g. DHW tanks, Lighting, Plug Loads, Cooking) in the U.S., with 270 ZNE residences under second-by-second monitoring of all uses to inform regulators with exacting detail of how energy is used by appliance, occupancy, age and income.


  1. Identify at least 4 multifamily energy efficiency technologies
  2. Identify at least 4 energy efficient and/or renewable technologies for residential projects
  3. Introduce case studies where zero net energy retrofits were cost effective
  4. Name passive and/or energy conservation measures anyone can use at home
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Created by

USGBC Redwood Empire
Santa Rosa, CA
United States