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Honolulu Seawater Air Conditioning, LLC

Cost-effective and smart, HSWAC's renewable energy source is downtown Honolulu's answer to cooling buildings using deep, cold seawater.

  • Stage Product In Development
  • Industry Clean Technology
  • Location Honolulu, HI, USA
  • Currency USD
  • Founded February 2004
  • Employees 4
  • Website

Company Summary

With opportunity in hand, Honolulu Seawater Air Conditioning, LLC is currently developing an energy efficient 25,000-ton seawater air conditioning district cooling system for commercial and residential properties in downtown Honolulu. Designed to minimize any negative environmental, recreational, and cultural impacts, the district cooling system will also reduce the use of refrigerants, potable water, sewage and chemicals for air conditioning.


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    Eric Masutomi
    President and CEO

    With over 25 years of accomplished private and public sector executive and senior level management experience in land use planning and development in Hawaii, Eric Masutomi is a highly respected leader in Honolulu’s business community. Mr. Masutomi was responsible for assisting in the planning and development of the $1.75 billion Waikiki Beach Walk and led State programs for the revitalization of the Honolulu Waterfront and Kakaako District.

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    Ingvar Larsson
    Vice President of Engineering

    Ingvar Larsson has over 30 years of experience in the fields of district heating, district cooling and combined heat and power in Sweden and North America. He has extensive applied knowledge in design, construction, financial analysis and technical and business management of district energy systems. He has been involved in the deep lake/SWAC systems in Sweden including Stockholm.

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    Anders Rydaker
    Chief Operating Officer

    Anders Rydaker has more than 35 years of experience in the district energy field. Mr. Rydaker developed the SWAC cooling system for Stockholm, Sweden and was involved in other deep lake/SWAC systems in Sweden. In 2003, he received Sweden’s Prestigious Energy Prize for the development of numerous district cooling systems in the country. Mr. Rydaker is a past Chair of the International District Energy Association.


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    Schlack Ito
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    Accuity LLP

Previous Investors

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    Honolulu Seawater Investors, LLC
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    Ulupono Initiative
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    Capital Cooling