成員會 (排名不分先後)
香港空調製冷業職工總會
HONG KONG AIR-CONDITIONING AND REFRIGERATING TRADES WORKERS GENERAL UNION
香港電機電子專業人員協會
HONG KONG ELECTRICAL AND ELECTRONICS PREFESSIONAL ASSOCIATION
消防保安工程從業員協會
FIRE AND SECURITY ENGINEERING EMPLOYEES ASSOCIATION
霓虹招牌及燈箱廣告從業員協會
NEON SIGN AND LIGHT BOXES ADVERTISING EMPLOYEES' ASSOCIATION
電子通訊技術人員協會
ELECTRONIC COMMUNICATION TECHNICAL STAFF UNION
香港機電業管理及專業人員協會
HONG KONG ELECTRICAL AND MECHANICAL MANAGEMENT AND PROFESSIONAL ASSOCIATION
香港機電工程助理人員工會
UNION OF HONG KONG ELECTRICAL AND MECHANICAL ENGINEERING ASSISTANTS
地下電纜及喉管探測人員協會
UNDERGROUND CABLES AND PIPES LOCATORS ASSOCIATION
香港照明專業人員協會
HONG KONG LIGHTING PROFESSIONALS ASSOCIATION
香港汽車維修業僱員總會
HONG KONG VEHICLE REPAIRING INDUSTRY EMPLOYEE GENERAL UNION
物業維修技術人員協會
PROPERTY MAINTENANCE TECHNICAL STAFF ASSOCIATION
香港建造及裝修工程從業員協會
HONG KONG CONSTRUCTION AND DECORATION WORKERS ASSOCIATION
香港能源效益行業總會
HONG KONG ENERGY EFFICIENCY INDUSTRY GENERAL ASSOCIATION
香港安全督導員協會
HONG KONG SAFETY SUPERVISORS ASSOCIATION
高壓電力專業人員總會
GENERAL UNION OF HIGH VOLTAGE PROFESSIONALS
院校設施管理及維修從業員協會
ACADEMY FACILITIES MANAGEMENT AND MAINTENANCE
熱水爐安裝及維修技術人員協會
THE ASSOCIATION OF WATER HEATER INSTALLATION AND MAINTENANCE TECHNICIANS
屋宇設備及可再生能源裝置從業員工會
BUILDING SERVICES AND RENEWABLE ENGERGY INSTALLATION
太陽能發電系統從業員工會
TRADE UNION OF PRACTITIONERS OF SOLAR POWER GENERATION
香港華人機器總工會
CHINESE ENGINEERS' INSTITUTE, HONG KONG
盟會 (排名不分先後)
電業承辦商協會
ASSOCIATION OF ELECTRICAL CONTRACTORS
水務技術同學會
PLUMBING TECHNOLOGY STUDENT ASSOCIATION