Oil Refineries
• Tesoro Hawaii
• Chevron Hawaii 

Waste & Wastewater Treatment
• U.S. Navy, ROICC, Pearl Harbor
• City and County of Honolulu 
• County of Kauai
• County of Maui 

Public Utilities & Power Plants
• Lihue Energy Services
• ABB -- Kalaeloa Partners
• AES -- Barbers Point
• H-Power -- Ogden Projects
• Hawaii Electric Industries:
  HECO/MECO/HELCO  

Sugar Processing & Related Utilities
• Pioneer Sugar
• AMFAC Sugar
• Hawaii Cane and Sugar

Telecommunications
• GST Telecommunications
• Sprint Hawaii
• AT & T

Transportation & Terminals
• The Gas Company, Inc.
• Hawaiian Cement
• U.S. Navy - FISC Pearl Harbor
• Tesoro Hawaii Terminals, Inc.
• UNOCAL
• State of Hawaii
• American Hawaii Cruise Lines
• Matson Navigation

Commercial Buildings
• Oceanic Institute
• U.S. Coast Guard
• NAVFAC, Hawaii
• State of Hawaii
• U.S. Department of Agriculture
• Molokai Ranch
• GST Telecommunications
• Cutter Automotive

Schools
• University of Hawaii

INTERNATIONAL

Public Utilities & Power Plants
• Palau Public Utilities Corporation (PPUC)
• Chuuk Public Utility Corporation (CPUC)
• Kosrae Utilities Authority (KUA)
• Marshalls Energy Company (MEC)
• Pohnpei Utility Corporation (PUC)
• Yap State Public Services Corporation (YSPSC)

Transportation & Fuel Terminals
• U.S. Navy – FISC, Hachinohe and Tsurumi, Japan
• State of Hawaii, DOT

Waste and Wastewater Treatment
• U.S. Navy - FISC, Tsurumi, Japan