| YUTAI ENERGY TRADE LIMITED | | Live |
| YuYang New Energy Co., Limited | | Live |
| YXLEE ENERGY LIMITED | Private company limited by shares | Dissolved |
| Zenith Energy Limited | Private company limited by shares | Live |
| ZENITH HI-TECH ENERGY LIMITED | Private company limited by shares | Live |
| Zeroth Energy Limited | | Live |
| Zeus Energy Company Limited | Private company limited by shares | Live |
| Zeus New Energy Macau Co., Limited | | Live |
| ZHEJIANG ENERGY HONG KONG HOLDING LIMITED | Private company limited by shares | Live |
| ZHENG HE MINDRAY ENERGY GROUP COMPANY LIMITED | Private company limited by shares | Live |
| ZHENRONG SUN HING ENERGY & RESOURCES HOLDING LIMITED | Private company limited by shares | Live |
| Zhiben Energy (Hong Kong) Company Limited | Private company limited by shares | Live |
| ZhongGu Energy (Hong Kong) Co., Limited | Private company limited by shares | Live |
| Zhongji Energy Limited | | Live |
| HK ZHONGMO NEW ENERGY LIMITED | | Live |
| Zhongran Energy Limited | Private company limited by shares | Live |
| ZHONGWEI ENERGY INVESTMENT LIMITED | Private company limited by shares | Live |
| ER ZHOU ENERGY LIMITED | Private company limited by shares | Live |
| ZIRRUS ENERGY COMPANY LIMITED | Private company limited by shares | Live |
| ENERGY ZONE LIMITED | Private company limited by shares | Live |
| ZONHAN NEW ENERGY COMPANY LIMITED | Private company limited by shares | Live |
| Zonne Energy Co., Limited | Private company limited by shares | Live |
| Zonzou New Energy Technology Limited | Private company limited by shares | Live |
| Zulu Energy Limited | Private company limited by shares | Live |
| Zung Gau Energy Limited | Private company limited by shares | Live |
| Energy100 Limited | | Live |
| ENERGY8 LIMITED | Private company limited by shares | Dissolved |
| LEXCOR ENERGY(ASIA PACIFIC) LIMITED | | Live |
| ENERGYAXA LIMITED | Private company limited by shares | Live |
| EnergyBalance Limited | Private company limited by shares | Live |
| ENERGYBOX LIMITED | Private company limited by shares | Live |
| ENERGYCO HOLDING LIMITED | Private company limited by shares | Live |
| EnergyComp HK Limited | Private company limited by shares | Live |
| EnergyControl Limited | Private company limited by shares | Live |
| EnergyCraft Technology Co., Limited | Private company limited by shares | Live |
| ENERGYCUBE SOLUTIONS CO., LIMITED | Private company limited by shares | Live |
| ENERGYES SUN OF ASIA LIMITED | Private company limited by shares | Dissolved |
| ENERGYFLO SYSTEMS (HK) LIMITED | Private company limited by shares | Dissolved |
| Energyfx Limited | Private company limited by shares | Live |
| EnergyGlare Limited | | Live |
| ENERGYGOLIVE LIMITED | Private company limited by shares | Live |
| PINXING NEW ENERGY(HONG KONG) CO., LIMITED | | Live |
| STRONG ENERGY(HONG KONG) LIMITED | Private company limited by shares | Live |
| BSL NEW ENERGY(HONGKONG)CO., LIMITED | | Live |
| ENERGYHOUSE HOLDING LIMITED | Private company limited by shares | Live |
| CHINA POWERGATE ENERGY-INVESTMENT (H.K.) HOLDING CO., LIMITED | Private company limited by shares | Live |
| ENERGYLAB LIMITED | Private company limited by shares | Live |
| ENERGYLAND LIMITED | Private company limited by shares | Dissolved |
| ENERGYLINK LIMITED | Private company limited by shares | Live |
| FOSTER ENERGYLITE LIMITED | Private company limited by shares | Dissolved |
| ENERGYMET LIMITED | Private company limited by shares | Dissolved |
| EnergyNest Hong Kong Limited | Private company limited by shares | Live |
| Energypool Company Limited | Private company limited by shares | Live |
| ENERGYPOWER SERVICE LIMITED | Private company limited by shares | Live Commenced dormancy on 03-Mar-2015 |
| HK Energypro Limited | | Live |
| ENERGY-S LIMITED | Private company limited by shares | Live |
| ENERGYS ASIA LIMITED | Private company limited by shares | Live |
| Durable Energys Limited | Private company limited by shares | Live |
| Casa Energys Engineering Company Limited | Private company limited by shares | Live |
| ENERGYS GROUP LIMITED | Private company limited by shares | Live |
| ENERGYS GROUP HOLDING LIMITED | Private company limited by shares | Live |
| Energys International (HK) Limited | Private company limited by shares | Dissolved |
| Energys Spectrum Leasing Limited | | Live |
| HUB ENERGYS PRIVATE LIMITED | Private company limited by shares | Live |
| Energys Spectrum Limited | Private company limited by shares | Live |
| Energys Spectrum PFS Limited | | Live |
| SPRING SPARKLE ENERGY-SAVE LIMITED | Private company limited by shares | Dissolved |
| HAN MA ENERGY-SAVER TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Glory & Grace Energy-Saving Limited | Private company limited by shares | Live |
| Li Ning Energy-saving (Hong Kong) Limited | Private company limited by shares | Dissolved |
| SHANGHAI KAIMEIRUI ENERGY-SAVING ELECTRICAL LIMITED | Private company limited by shares | Dissolved |
| Profound Strength Energy-saving Technology Company Limited | Private company limited by shares | Dissolved |
| XIN LI ENERGY-SAVING TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| GO AHEAD ENERGY-SAVING & AUTOMATION TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| ENERGYSENSE COMPANY LIMITED | | Live |
| ENERGYSNOW LIMITED | Private company limited by shares | Live |
| ENERGYSOLU TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| Energyspec Pty Limited | Private company limited by shares | Live |
| ENERGYSUP TRADING CO., LIMITED | Private company limited by shares | Live |
| ENERGYTECH LIMITED | Private company limited by shares | Live |
| ENERGYTEL LIMITED | Private company limited by shares | Live |
| Energytrans Trading World Limited | Private company limited by shares | Live |
| EnergyUncovered Limited | Private company limited by shares | Live |
| EnergyX Limited | Private company limited by shares | Live |
| EnergyX Limited | | Live |
| Enerhash Limited | Private company limited by shares | Live |
| ECO ENERHIYA LIMITED | Private company limited by shares | Live |
| EnerHybrid Energy Management Consulting Co., Limited | Private company limited by shares | Live |
| ENERI LIMITED | Private company limited by shares | Live |
| ENERIGHT INNOVATIVE LIGHTING CO., LIMITED | Private company limited by shares | Dissolved |
| EnerIHC Holding Limited | Private company limited by shares | Live |
| ENERINVEST LIMITED | Private company limited by shares | Dissolved |
| Enerjoy Limited | Private company limited by shares | Live |
| ENERLED CO., LIMITED | Private company limited by shares | Dissolved |
| KJ ENERLIFE LIMITED | Private company limited by shares | Live |
| Enerlight Company Limited | | Live |
| ENERLINE LIMITED | Private company limited by shares | Live |
| ENERLITE LIMITED | Private company limited by shares | Live |
| ENERLOG CO., LIMITED | Private company limited by shares | Live |
| Enermax Limited | Private company limited by shares | Live |