| Energy Star Enterprise Limited | Private company limited by shares | Dissolved |
| Gold Star Energy Limited | Private company limited by shares | Live |
| ENERGY STAR HONG KONG LIMITED | Private company limited by shares | Dissolved |
| HORIZON STAR ENERGY LIMITED | Private company limited by shares | Live |
| LUCKY STAR ENERGY LIFE LIMITED | Private company limited by shares | Live |
| Morning Star New Energy Limited | | Live |
| Asia Power Star New Energy Trade Limited | Private company limited by shares | Live |
| STAR ENERGY & RESOURCES LIMITED | Private company limited by shares | Live |
| ENERGY EYE STAR TRADE LIMITED | Private company limited by shares | Dissolved |
| HK YOSON ENERGY STAR COMPANY LIMITED | Private company limited by shares | Live |
| STARGLOW ENERGY TECHNOLOGY LIMITED | | Live |
| Stark Energy Limited | | Live |
| Starlex Energy Service & Supply Limited | Private company limited by shares | Live |
| ENERGY STATE LIMITED | Private company limited by shares | Live |
| Energy Station Company Limited | Private company limited by shares | Live |
| STATION ENERGY CO., LIMITED | Private company limited by shares | Live |
| ENERGY STEP LIMITED | Private company limited by shares | Dissolved |
| ASIA ENERGY STOCKS LIMITED | Private company limited by shares | Live |
| Stoixwing Energy Co., Limited | | Live |
| STC Energy Storage Limited | | Live |
| Galaxy Energy Storage Hong Kong Limited | | Live |
| ENERGY STORE LIMITED | Private company limited by shares | Dissolved |
| STRAIT ENERGY LIMITED | Private company limited by shares | Live |
| STRAIT ENERGY INVESTMENT COMPANY LIMITED | Private company limited by shares | Live |
| EUROPEAN & ASIAN STRATEGIC ENERGY & RESOURCES LIMITED | Private company limited by shares | Live |
| ENERGY STREAM LIMITED | Private company limited by shares | Live |
| ENERGY STRENGTH HOLDING LIMITED | Private company limited by shares | Live |
| STRONG ENERGY LIMITED | Private company limited by shares | Live |
| STRONG NEW ENERGY COMPANY LIMITED | | Live |
| SUBTECH ENERGY LIMITED | Private company limited by shares | Live |
| SUCCESS ENERGY LIMITED | Private company limited by shares | Dissolved |
| SUCCESS ENERGY LIMITED | Private company limited by shares | Live |
| ENERGY SUCCESS LIMITED | Private company limited by shares | Live |
| ALL SUCCESS ENERGY LIMITED | Private company limited by shares | Live |
| SUCCESS ENERGY LIMITED | Private company limited by shares | Live |
| Success Dragon Energy Limited | Private company limited by shares | Live |
| GREEN SUMMIT ENERGY LIMITED | Private company limited by shares | Dissolved |
| NOVA SUMMIT ENERGY LIMITED | Private company limited by shares | Live |
| SUNBIRD ENERGY LIMITED | Private company limited by shares | Live |
| SUNBRIGHT ENERGY AND MINERAL CO., LIMITED | Private company limited by shares | Live |
| Suncharge Energy Limited | | Live |
| CANADA'S SUNCOR ENERGY LIMITED | Private company limited by shares | Dissolved |
| Suncore Energy Hong Kong Limited | Private company limited by shares | Live |
| SUNFLOWER ENERGY LIMITED | Private company limited by shares | Dissolved |
| SUNFLOWER ENERGY LIMITED | Private company limited by shares | Live |
| Sungear Energy System Limited | Private company limited by shares | Live |
| SUNGZHAN ENERGY LIMITED | Private company limited by shares | Dissolved |
| SUNICS ENERGY LIMITED | Private company limited by shares | Dissolved |
| SUNKITS ENERGY AND EPC LIMITED | Private company limited by shares | Dissolved |
| SUNKY ENERGY CO., LIMITED | | Live |
| SUNLABOB RENEWABLE ENERGY LIMITED | Private company limited by shares | Live |
| SUNLINK ENERGY LIMITED | Private company limited by shares | Live |
| HK SUNLUX ENERGY LIMITED | | Live |
| Sun-Nova New Energy Limited | Private company limited by shares | Live |
| SUNNY ENERGY LIMITED | Private company limited by shares | Live |
| SUNNY POWER ENERGY LIMITED | Private company limited by shares | Live |
| SUNRAIN HK NEW ENERGY LIMITED | Private company limited by shares | Dissolved |
| SUNRAIN NEW ENERGY GROUP LIMITED | Private company limited by shares | Dissolved |
| HK SUNRAIN SOLAR ENERGY LIMITED | Private company limited by shares | Dissolved |
| Sunrich New Energy Co., Limited | Private company limited by shares | Live |
| Sunridge Energy Limited | Private company limited by shares | Live |
| SUNRISE ENERGY LIMITED | Private company limited by shares | Live |
| SUNRISE ENERGY LIMITED | Private company limited by shares | Live |
| SUNROOF NEW ENERGY COMPANY LIMITED | Private company limited by shares | Live |
| SUNSEN ENERGY LIMITED | | Live |
| SUNSHINE ENERGY LIMITED | Private company limited by shares | Dissolved |
| NEW SUNSHINE ENERGY LIMITED | Private company limited by shares | Live |
| SUNSHINE ENERGY LIMITED | Private company limited by shares | Live |
| Sunshine Clean Energy Company Limited | Private company limited by shares | Live |
| SUNSHINE NEW ENERGY CO., LIMITED | Private company limited by shares | Dissolved |
| Sunshine Energy Industry Co., Limited | | Live |
| NINGBO SUNSHINE ENERGY CO., LIMITED | Private company limited by shares | Live |
| New Sunshine Energy Solutions Co., Limited | Private company limited by shares | Live |
| SunShine Energy Enterprise Limited | Private company limited by shares | Live |
| GLAD SUNSHINE ENERGY LIMITED | | Live |
| SUNSHINE ENERGY GROUP LIMITED | Private company limited by shares | Dissolved |
| Sunshine New Energy Group Limited | Private company limited by shares | Live |
| TSINGHUA SUNSHINE SOLAR ENERGY GROUP LIMITED | Private company limited by shares | Dissolved |
| Sunshine Energy Technology (Hong Kong) Limited | Private company limited by shares | Live |
| SUNSHINE THIN FILM ENERGY COMPANY LIMITED | Private company limited by shares | Live |
| Sunsou Energy Co., Limited | Private company limited by shares | Live |
| SUNTEC ENERGY LIMITED | Private company limited by shares | Live |
| SUNWARD ENERGY LIMITED | Private company limited by shares | Live Ceased dormancy on 08-Aug-2005 |
| SUNYES NEW ENERGY HK LIMITED | | Live |
| SUPER ENERGY LIMITED | Private company limited by shares | Dissolved |
| SUPER ENERGY LIMITED | Private company limited by shares | Dissolved |
| SUPER ENERGY LIMITED | Private company limited by shares | Live |
| SUPER ENERGY (HOLDING) LIMITED | Private company limited by shares | Dissolved |
| SUPER ENERGY SHIPPING (HONG KONG) LIMITED | | Live |
| SUPER ENERGY INVESTMENTS COMPANY LIMITED | Private company limited by shares | Dissolved |
| SUPER ENERGY TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| ENERGY SUPPLY LIMITED | Private company limited by shares | Dissolved |
| ACE ENERGY SUPPLY LIMITED | Private company limited by shares | Live |
| NORTAS WIND ENERGY SUPPORT LIMITED | Private company limited by shares | Live |
| SURE ENERGY LIMITED | Private company limited by shares | Live |
| SUREWELL ENERGY CO., LIMITED | Private company limited by shares | Live |
| ENERGY SURPLUS LIMITED | Private company limited by shares | Dissolved |
| SURPLUS ENERGY LIMITED | Private company limited by shares | Dissolved |
| SUSTAIN ENERGY LIMITED | Private company limited by shares | Live |
| SUVERTER NEW ENERGY LIMITED | | Live |