Equinox II is Innovative Design‘s own office building. This two-story passive solar building features:
  • Sunspace entrance with thermal mass
  • Passive air circulation
  • Daylighting
  • Indirect lighting
Using Equinox II as a personal testbed for sustainable innovation, several renovations have been conducted throughout the years. The energy consumption of Equinox II has been approximately 25 kBtu/sf/yr–only one-third of a typical office building in the area.

Over the past four decades, the building has saved over 9,000 MBTUs compared to a typical office building in the southeast of the US. It still consumes 60% less energy than a typical new high-tech office building. The secret of how a 40-year-old building can do this is because the sun never gets old or outdated.

Click here if you want to learn more about this building.


Raleigh, NC


4,017 SF