| DCDune Construct BV Groot-Bijgaarden, AustriaEnergy, Utilities & Waste Treatment | Recyclageparken Containerparken Milieuparken | |
| FFFor Forest AustriaEnergy, Utilities & Waste Treatment | | |
| EEEQOS Energie Österreich Wien, AustriaEnergy, Utilities & Waste Treatment | Stromnetze Elektrifizierung Energiewende | |
| APAustrian Power Grid AG Wien, AustriaEnergy, Utilities & Waste Treatment | Construction work Installation services (except software) Stromnetzbetreiber Übertragungsnetz Energiewende | |
| SESteinbacher Energie GmbH Hollenstein an der Ybbs, AustriaEnergy, Utilities & Waste Treatment | Installation services (except software) Construction structures and materials; auxiliary products to construction (except electric apparatus) Kabel- Und Zählerverteilerschränke Anlagenbau Großhandel | |
| 221ENERGY GmbH Innsbruck, AustriaEnergy, Utilities & Waste Treatment | Construction work Furniture (incl. office furniture), furnishings, domestic appliances (excl. lighting) and cleaning products Bitcoin-Heizungen Nachhaltiges Heizen Bitcoin-Mining | |
| RREPS-Tirol GmbH Wattens, AustriaEnergy, Utilities & Waste Treatment | Construction work Architectural, construction, engineering and inspection services Road Energy Production System REPS Mechanische Energieumwandlung | |
| OPOnPlan Planungs GmbH Wien, AustriaEnergy, Utilities & Waste Treatment | Construction work Architectural, construction, engineering and inspection services | |
| DLDAS LEITWERK Kapelln, AustriaEnergy, Utilities & Waste Treatment | Construction work Architectural, construction, engineering and inspection services Energie- Und Gebäudetechnik Elektrotechnik Haustechnik | |
| EEEQOS Energie Group Vienna, AustriaEnergy, Utilities & Waste Treatment | Construction work Architectural, construction, engineering and inspection services Stromnetze Elektrifizierung Energiewende | |