DAGS – Kalanimoku Building

869 Punchbowl St.  Honolulu, HI 96823

Project Details:

Project Type – Photovoltaic 

Facility Description – Office / Data Center

Project Size – 236.1 kw


Annual kwH Savings

This photovoltaic project was added to the DAGS capitol complex energy conservation project awarded to Noresco. Noresco subcontracted Photonworks Engineering as a consultant to develop the photovoltaic scope of work for their proposal. Originally there wasn’t any funds budgeted for the photovoltaic scope of work, but the State of Hawaii Department of Accounting and General Servers(DAGS) worked together with the Department of Business, Economic Development and Tourism(DBEDT) and the Governor’s office to secure America Recovery and Reinvestment Act(ARRA) funds to complete this project. Just prior to awarding the project it was determined that the Kalanimoku Bldg was part of a spot network, which would cause a challenge for the project. However, Noresco, HECO, Lincolne Scott and Photonworks Engineering were able to devise a custom solution for interconnection just in time to save the ARRA funds allocation for the State of Hawaii. 

The next challenge was dealing with a roofing system with pre-existing conditions. Photonworks Engineering commissioned a thermographic study to document the pre-existing issues and was able to work with the roofing manufacturer to repair the issues prior to installing the photovoltaic system. The system we installed is fully ballasted, non-penetrating, rated to 115mph and it maintains the existing roof warranty for the single ply membrane. The penthouse roof area had a worn out roof system with no warranty, so as part of our installation we added a new 20yr labor and material warranty acrylic roofing system from Hydro Stop. The module area for the system is 17,420 sq ft. The projected average daily stream production is approx. 1 MWh or 365 MWh per year. In the lobby of the Kalanimoku Bldg, Photonworks Engineering installed a kiosk which displays real-time production data from the inverters as well as temperature and wind data which helps determine variances in system performance. 


Photovoltaic system consisting of 1005 Sharp Modules (235 Watt), 30 SMA  SB7000-US inverters and a SunkLink fully ballasted, non-penetrating, racking system with a 10 degree pitch. 

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