| AAAWT Anlagenschutz und Wassertechnik GmbH Ebreichsdorf, AustriaFacility Management | Heizungs-, Kälte- & Frostschutzsysteme Trinkwasseraufbereitung Filtration | |
| 221ENERGY GmbH Innsbruck, AustriaEnergy, Utilities & Waste Treatment | Bitcoin-Heizungen Nachhaltiges Heizen Bitcoin-Mining | |
| E-etn - Energie- und Telecom Netze Wien, AustriaEnergy, Utilities & Waste Treatment | Construction structures and materials; auxiliary products to construction (except electric apparatus) Construction work Energie- Und Telekommunikationsnetze Kabelmontage Energiekabelprojekte | |
| HGHEAT gas technologies GmbH Biedermannsdorf, AustriaEnergy, Utilities & Waste Treatment | Construction structures and materials; auxiliary products to construction (except electric apparatus) Abluftreinigung Wärmerückgewinnung Erdgastechnik | |
| KPKESS Power Solutions GmbH Wien, AustriaEnergy, Utilities & Waste Treatment | Installation services (except software) Unterbrechungsfreie Stromversorgung Überspannungsschutz USV-Service | |
| MAMesser Austria Gumpoldskirchen, AustriaEnergy, Utilities & Waste Treatment | Construction structures and materials; auxiliary products to construction (except electric apparatus) Industriegase Technische Gase Medizinische Gase | |
| PSPower Solar Wärmetauscher AUSTRIA Ansfelden, AustriaEnergy, Utilities & Waste Treatment | Installation services (except software) Wärmetauscher Plattenwärmetauscher Technische Auslegung | |
| EMENERGY MODE GmbH Thiersee, AustriaEnergy, Utilities & Waste Treatment | Construction structures and materials; auxiliary products to construction (except electric apparatus) Installation services (except software) Mobile Energieversorgung Vermietung Von Energiezentralen Wärme | |
| SESteinbacher Energie GmbH Hollenstein an der Ybbs, AustriaEnergy, Utilities & Waste Treatment | Construction structures and materials; auxiliary products to construction (except electric apparatus) Installation services (except software) Kabel- Und Zählerverteilerschränke Anlagenbau Großhandel | |
| HEHIRO Europe GmbH Graz, AustriaEnergy, Utilities & Waste Treatment | Construction structures and materials; auxiliary products to construction (except electric apparatus) Construction work | |