STW Vertriebs GmbH & CO KG

STW Vertriebs GmbH & CO KG is the sales and distribution company within the Stadtwerke Klagenfurt group, the municipal utility holding of Klagenfurt am Wörthersee in the Austrian state of Carinthia. The group traces its origins to 1940, when several separate municipal operations — the electricity works, waterworks, transport operations, public baths, funeral services and poster/billboard advertising — were merged into a single large city enterprise. Today the Stadtwerke Klagenfurt group describes itself as a diversified municipal services provider covering energy, heat, water, mobility, telecommunications, outdoor advertising, leisure facilities and funeral services, serving residents 365 days a year. The group is wholly owned by the City of Klagenfurt am Wörthersee and operates as a reliable communal service provider, with roughly 900 employees according to its own corporate communications. Its stated priorities are sustainability, careful use of natural resources and annual investment in supply and infrastructure assets. The group's district heating is reported to come predominantly from renewable energy, and it runs numerous customer-facing activities such as electricity and gas tariffs, energy advice, e-mobility projects, public transport through Klagenfurt Mobil GmbH, and leisure facilities including the Alpen-Adria family and sports pool and the Klagenfurt lido. STW Vertriebs GmbH & CO KG functions as the commercial sales entity through which these services reach private and business customers. Its website, stw.at, is the group's public portal for private customers, offering electricity tariffs, energy advice, subsidy guidance, digital applications and news about the group's activities. The brand is therefore best understood not as a standalone consumer product label but as the customer-facing sales and distribution brand of a municipal utility group rooted in Klagenfurt and active across the surrounding region.

The history of the Stadtwerke Klagenfurt group, of which STW Vertriebs GmbH & CO KG is the sales arm, begins in 1940. In that year, several separate municipal operations in Klagenfurt — the electricity works, waterworks, transport operations, public baths, funeral services and poster/billboard advertising — were combined into a single large city enterprise. This consolidation created the foundation for the modern municipal utility that serves Klagenfurt today. In 1944, the first trolleybus line began operating between Kreuzbergl and St. Peter. In 1947, the Stadtwerke received the trade license for the billboard advertising business. In 1949, the district heating success story in the provincial capital began: the Fernheizkraftwerk in Klagenfurt went into operation as Austria's first combined heat and power plant (producing both heat and electricity). District heating remains a core part of the group's offering, and according to a TÜV-SÜD-verified breakdown in 2025, 90.51% of its district heating comes from renewable energy. In 1955, the Heiligengeistplatz established itself as Klagenfurt's most important transport hub to this day. In the following years, the Stadtwerke took over the gasworks after its reconstruction, and in 1959 the Straschitz II groundwater extraction facility was built. Also in 1959, the middle bridge was built at the Klagenfurt lido; by 1983 all three bridges were complete. In 1970, further developments followed as the group continued to expand its infrastructure and services. Over the decades, the group grew into a diversified municipal services provider. Its activities expanded to include energy supply, heating, water, mobility, telecommunications, outdoor advertising, leisure facilities and funeral services. The group operates through subsidiaries, including Klagenfurt Mobil GmbH for public transport. It employs roughly 900 people and is wholly owned by the City of Klagenfurt am Wörthersee. The group publishes sustainability and business reports annually, and in 2025 it celebrated its 85th anniversary, marking 1940 to 2025. STW Vertriebs GmbH & CO KG serves as the sales and distribution company within this group, handling customer-facing energy sales and related services for private and business customers in Klagenfurt and the surrounding region.

• 2025

  Stadtwerke Klagenfurt celebrates its 85th anniversary (1940–2025); TÜV-SÜD-verified breakdown shows 90.51% of district heating from renewable energy.

• 1983

  All three bridges at the Klagenfurt lido are complete.

• 1959

  The Straschitz II groundwater extraction facility is built; the middle bridge at the Klagenfurt lido is constructed.

• 1955

  Heiligengeistplatz establishes itself as Klagenfurt's most important transport hub.

• 1949

  District heating begins in Klagenfurt with the Fernheizkraftwerk, Austria's first combined heat and power plant.

• 1947

  The Stadtwerke receive the trade license for the billboard advertising business.

• 1944

  The first trolleybus line begins operating between Kreuzbergl and St. Peter.

• 1940

  Several separate municipal operations in Klagenfurt (electricity works, waterworks, transport operations, baths, funeral services, poster advertising) are merged into a single large city enterprise.

A reliable, sustainable and affordable municipal service provider for the people of Klagenfurt and the surrounding region, operating as the customer-facing sales arm of the Stadtwerke Klagenfurt group.

• Electricity supply

  Electricity tariffs for private and business customers in Klagenfurt and the region.

• District heating

  Heat supply from combined heat and power and renewable sources; 90.51% renewable according to 2025 TÜV-SÜD-verified breakdown.

• Water supply

  Municipal water supply services, including groundwater extraction facilities.

• Public transport

  Bus and trolleybus services in Klagenfurt, operated through Klagenfurt Mobil GmbH.

• Telecommunications

  Telecommunications services for the region.

• Outdoor advertising

  Billboard and poster advertising services, licensed since 1947.

• Leisure facilities

  Swimming and leisure facilities including the Alpen-Adria family and sports pool and the Klagenfurt lido.

• Funeral services

  Municipal funeral services.

• Energy consulting

  STW-Energieberatung supports customers with energy efficiency and subsidized heating replacement.

• E-mobility

  Participation in INTERREG Alpine Space projects e-MOTICON and e-SMART for charging infrastructure and e-mobility planning.

1. 1Stadtwerke Klagenfurt official websitestw.at
2. 2Unsere Geschichte - Stadtwerke Klagenfurtstw.at
3. 3STADTWERKE Klagenfurt - engagiert und zuverlässigstw.at
4. 4E-Smart - Stadtwerke Klagenfurtstw.at
5. 5Wikidata: STW Vertriebs GmbH & CO KGwikidata.org