Project Introduction
Project Name: Kahauiki Village
Location: Honolulu, Hawaii
Installed: 2018
Installer: PhotonWorks
It takes a village to raise a child. But, in this case, it took a consortium of volunteers to build Kahauiki Village and provide families with hope and opportunity for the future, says Dexter Kubota of Bowers + Kubota Consulting. More than 75 local businesses, individuals and organizations have contributed to Kahauiki Village.
The creation of a microgrid and energy storage facility will allow Kahauiki Village to operate almost entirely off the grid.
PhotonWorks, a design-build general contractor with a focus on electrical- and energy-related projects and a passion for affordable and sustainable housing, worked closely with InSynergy Engineering on the microgrid design.
PhotonWorks, a design-build general contractor with a focus on electrical- and energy-related projects and a passion for affordable and sustainable housing, worked closely with InSynergy Engineering on the microgrid design.
Solar thermal with propane backup systems were installed at each residence. They were built in two floorplans: 2 bedroom 1 bath 1 kitchen units, and duplexes that contained 2 connected 1br/1ba/1 kitchen units. 30 units total for phase 1, with 120 or so additional planned for phase 2.
Project Summary:
Location: Honolulu, Hawaii
Application: Solar water heating for affordable housing complex (Comprised of 153 units)
Solar Collectors: SunEarth EP-40 & SunEarth SB-32
System Format: Solar pre-heated water for tenant’s water heaters
Two bedroom system:
Solar Collectors: (1) SunEarth EP-40 Collector
Storage: (1) SunEarth 80gal EC80-6 & (1) AO Smith 30gal LT PreMax
Solar Collectors: (1) SunEarth EP-40 Collector
Storage: (1) SunEarth 80gal EC80-6 & (1) AO Smith 30gal LT PreMax
Rated Power Output Per Thermal System: 40.9ft2 / 10.76 * 0.7 = 2.66 kW
Yearly Energy Output (kWh): 2.66*5.91*.44*365 = 2524.73 kwh (per system)
Duplex system:
Solar Collectors: (2) SunEarth SB-32 Collectors
Storage: (1) SunEarth 120gal SE120-6 & (1) AO Smith 40gal LT Premax
Rated Power Output Per Thermal System: 65.72ft2 / 10.76 * 0.7 = 4.28kW
Yearly Energy Output (kWh): 4.28*5.91*.44*365 = 4062.34 kwh (per system)
A double system was installed at the laundromat:
Solar Collectors: (3) SunEarth EP-40 Collectors
Storage: (2) SunEarth 120gal SE120-6 & (2) each AO Smith 40gal LT Premax
Rated Power Output Per Thermal System: 122.7ft2 / 10.76 * 0.7 = 7.98kW
Yearly Energy Output (kWh): 7.98*5.91*.44*365 = 7574.18 kwh (per system)
Other:
SunEarth www.sunearthinc.com
PhotonWorks www.photonworks.com



