ÖNACE 35: Electricity, gas, steam and air conditioning supply
Section: Electricity, gas, steam and air conditioning supply. Assignment by Statistics Austria under ÖNACE 2025, not from the register.
Statistics Austria assigns 3,512 active companies in the register to ÖNACE division 35: Electricity, gas, steam and air conditioning supply (as of 5 Nov 2026).
1,052 of them have a company page on firmenbuchdaten.at. The shares below refer to these 1,052.
Most have their seat in: Lower Austria 20 %, Styria 18 %, Upper Austria 14 %.
Most common legal forms: GmbH 83 %, KG 10 %, eGen 5 %.
Places with the most companies: Wien (125), Graz (31), St. Pölten (22), Linz (20), Salzburg (20).
983 have filed annual accounts with a size class, 73 of them as medium-sized or large.
The largest class is 35.12-0 Production of electricity from renewable sources with 2,170 companies.
Largest classes
- 35.12-0 Production of electricity from renewable sources: 2,170
- 35.30-0 Steam and air conditioning supply: 947
- 35.15-0 Trade of electricity: 144
- 35.14-0 Distribution of electricity: 78
- 35.40-0 Activities of brokers and agents for electric power and natural gas: 48
Electricity, gas, steam and air conditioning supply: companies, larger first
- Elektrizitätswerke Reutte AGFN 122143y · Reutte · Large (G)
- HALLAG Kommunal GmbHFN 147261k · Hall in Tirol · Large (G)
- VERBUND Energy4Business GmbHFN 173735v · Wien · Large (G)
- Austrian Power Grid AGFN 177696v · Wien · Large (G)
- Energie Steiermark Kunden GmbHFN 202411p · Graz · Large (G)
- MyElectric Energievertriebs- und -dienstleistungs GmbHFN 204712y · Wien · Large (G)
- Stadtwerke Kapfenberg GmbHFN 208959v · Kapfenberg · Large (G)
- Vorarlberger Energienetze GmbHFN 213098f · Bregenz · Large (G)
- WIEN ENERGIE GmbHFN 215854h · Wien · Large (G)
- Wels Strom GmbHFN 221676w · Wels · Large (G)
- go green energy GmbH & Co KGFN 227182t · Wien · Large (G)
- Energienetze Steiermark GmbHFN 242892w · Graz · Large (G)
- Windpark Pannonia Gols GmbHFN 248757w · Parndorf · Large (G)
- Salzburg Netz GmbHFN 265000g · Salzburg · Large (G)
- OeMAG Abwicklungsstelle für Ökostrom AGFN 280453g · Wien · Large (G)
- Windkraft Simonsfeld AGFN 330533d · Ernstbrunn · Large (G)
- OMV Gas Storage GmbHFN 348460t · Wien · Large (G)
- Energie Steiermark Green Power GmbHFN 37211y · Graz · Large (G)
- Energie Steiermark Business GmbHFN 386795t · Graz · Large (G)
- IONITY GmbHFN 490300f · München · Large (G)
- Salzburg AG für Energie, Verkehr und TelekommunikationFN 51350s · Salzburg · Large (G)
- Energie Steiermark Wärme GmbHFN 57546b · Graz · Large (G)
- illwerke vkw AGFN 59202m · Bregenz · Large (G)
- MET CET GmbHFN 601629z · Wien · Large (G)
Datenquelle: Statistik Austria - data.statistik.gv.at (Statistics Austria), register number to ÖNACE assignment, CC BY 4.0, as of 5 Nov 2026. Source: Austrian company register (Firmenbuch), Republic of Austria, represented by the BMJ, open data under CC BY 4.0.