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.
When completed, Kahauiki Village will be home to 153 families that currently live in transitional housing on Oahu. It will also provide child care, preschool facilities and job opportunities for families, allowing residents the chance to earn income and be self-sufficient. And the clean energy system that’s powering all of this — well, it’s the first of its kind in the world.
The homes — prefabricated, steel-framed boxes manufactured by a Japanese company called System House and purchased by Kurisu — are repurposed emergency housing units, originally deployed after the 2011 tsunami in Japan. The one- and two-bedroom units will rent for $725 and $900 a month, respectively, including gas, electricity and water — a fraction of the market rate. Renters will have a kitchen and bath, and access to outdoor fire pits, vegetable gardens, a communal laundry facility, and a childcare center, as well as a variety of other on-site services.
Sun Kind of Wonderful
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. 
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
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)

Contact Information: 
SunEarth www.sunearthinc.com
PhotonWorks www.photonworks.com
   Kahauiki Village Project SB-32 Collectors   Kahauiki Village Project Solar Water Heating   Kahauiki Village Project EP-40 Collectors

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