Stadtwerke Karlsruhe

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Stadtwerke Karlsruhe GmbH

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legal form GmbH
Seat Karlsruhe , Germany
management Michael Homann (Managing Director Sales, Trade and Commercial Affairs), Olaf Heil (Managing Director Technology and Human Resources)
Number of employees 1,143
Branch power supply
Website www.stadtwerke-karlsruhe.de
As of May 31, 2019

The Stadtwerke Karlsruhe GmbH is the company for the supply of Karlsruhe with electricity, gas, water and heating.

Waterworks in Elchesheim-Illingen

Originally it was a city-owned company called "Stadtwerke Karlsruhe". The GmbH was founded on July 1, 1997 . The city today holds an 80% stake through its Karlsruhe Versorgungs-, Verkehrs- und Hafen GmbH ( KVVH , which is wholly owned by the city). 20% of the municipal utilities are held by EnBW .

The service sectors are in particular electricity, natural gas, drinking water, district heating and renewable energies.

Michael Homann (Chairman) and Olaf Heil belong to the management. The supervisory board includes First Mayor Gabriele Luczak-Schwarz (chairwoman) and Steffen Ringwald (deputy chairman).

Key figures

Stadtwerke Karlsruhe supplies 90,000 households with natural gas and over 32,000 with district heating. In addition, 190,000 customers are supplied with electricity. Since the drinking water from the six waterworks is also taken from the surrounding communities, a total of 400,000 people are supplied with drinking water.

The sales sales volumes in 2018 were:

  • 1.91 TWh of electricity
  • 1.45 TWh natural gas
  • 25 million m³ of water
  • 0.81 TWh district heating

District heating

District heating has been used in Karlsruhe since 1904. At that time, parts of the castle were supplied with district heating from a district heating plant. From 1951, the large-scale supply of the Siemens plant with steam from the Honsellstrasse power plant, today "Heizkraftwerk-West" (HKW-West), began. The supply was gradually expanded and in 1974 resulted in 6000 apartments in Karlsruhe being heated with district heating. In 1992 a connection was established between the Rheinhafen-Dampfkraftwerk (RDK) and the HKW-West. This makes it possible to extract heat from the RDK and feed it into the district heating network of Stadtwerke Karlsruhe, if required.

Between 2008 and 2010, a five-kilometer long district heating pipeline was built in the west of Karlsruhe between the Upper Rhine mineral oil refinery (MIRO) and HKW-West. This makes it possible to provide heat that can no longer be used in the refinery process as district heating to households in Karlsruhe. The heat output of this first expansion stage is 40 MW. The second expansion phase was completed in October 2015. With additional heat exchangers in the refinery, it is now possible to extract an additional 50 MW of thermal power.

Today (as of 2017) 32,000 apartments in Karlsruhe are supplied with district heating. There are also commercial, industrial and trading companies as well as service companies. The specific CO₂ emissions per kWh of district heating are 70 g.

In the summer of 2018, the groundbreaking took place for a new 4.24 km long district heating pipeline in the southwest of Karlsruhe. It connects the municipality of Rheinstetten to the district heating network of Stadtwerke Karlsruhe and has a connected load of around 11 MW. Around 1200 apartments can be supplied with heat via the new route. The first connectees will be able to obtain district heating from 2021.

The generating plants in detail:

  • MIRO waste heat (90 MW)
  • RDK Block 7 (220 MW)
  • HKW-West (350 MW without power generation or 108 MW in combined heat and power)
  • Ahaweg heating plant (100 MW)
  • Waldstadt heating plant (40 MW)

Network statistics

As the distribution network operator in Karlsruhe, Stadtwerke Karlsruhe Netzservice GmbH (SWKN) operates the electricity and gas network. Around 328,000 people live within the network area.

The distribution network (as of 2018) includes 60 km of 110 kV high-voltage cables, 861 km of 20-kV medium-voltage cables and 1.5 km of 20-kV overhead lines. In the low-voltage network (designed as a four-wire network) there are 301 km of overhead lines and 1,655 km of cables. In 2018, 1,701 GWh of electrical energy was drawn from the upstream network. The highest simultaneous annual drawing load was 278.83 MW. Losses of 46 GWh (equivalent to 2.65%) occurred in the entire power grid.

In addition to Karlsruhe, SWKN also operates the gas network in the neighboring municipality of Rheinstetten. The network comprises the pressure levels low pressure (LP), medium pressure (MD) and high pressure (HP). The network operators upstream of the SWKN are Open Grid Europe GmbH and Terranets BW GmbH. In 2018, the length of the gas pipeline network was 797 km, divided into 123 km HP, 84 km MD and 590 km LP. Only H-gas is transported, which is also passed on to downstream network operators at two network interconnection points. These are the Netze-Gesellschaft Südwest mbH (network interconnection point Hardt-West) and SWE Netz GmbH (network interconnection point Ettlingen-Nord).

Holdings

Stadtwerke Karlsruhe GmbH owns several subsidiaries and shares in other utility companies.

The largest subsidiary (100%) is Stadtwerke Karlsruhe Netzservice GmbH, which is the network operator of the electricity and gas network in Karlsruhe with around 460 employees. Stadtwerke Karlsruhe Netzservice GmbH is also the basic operator of the metering point for electricity, water, gas and district heating and also has a state-approved test center for the metering stations in each of these sectors.

The group also includes:

  • SWK Regenerativ Verwaltungs GmbH, Karlsruhe (100%)
  • SWK Novatec GmbH, Karlsruhe (100%)
  • BES - Badische Energie-Servicegesellschaft mbH (66%)
  • KES - Karlsruher Energieservice GmbH, Karlsruhe (50%)
  • KEK Karlsruher Energie- und Klimaschutzagentur gGmbH, Karlsruhe (50%)
  • Onshore Bündelgesellschaft 2 GmbH, Karlsruhe (50%)
  • TelemaxX Telekommunikation GmbH, Karlsruhe (42.045%)
  • PS Project Systems GmbH & Co. KG - Project Karlsruhe West, Neumünster (40%)
  • Special purpose association for the water supply of the hill country between Alb and Pfinz (33.87%)
  • Netzeigentumsgesellschaft Rheinstetten GmbH & Co. KG, Rheinstetten (24.50%)
  • SWK Regenerativ GmbH Co. KG Solar Park I, Karlsruhe (14.33%)
  • Windpool GmbH & Co. KG, Frankfurt am Main (12.50%)

Web links

Commons : Stadtwerke Karlsruhe  - Collection of images, videos and audio files

Individual evidence

  1. About us - Stadtwerke Karlsruhe. Retrieved December 2, 2019 .
  2. ^ The history of district heating - Stadtwerke Karlsruhe. Retrieved December 13, 2017 .
  3. ^ District heating for Rheinstetten: start of construction - Stadtwerke Karlsruhe. Retrieved May 16, 2019 .
  4. ^ Process waste heat - Stadtwerke Karlsruhe. Retrieved December 13, 2017 .
  5. Network data. Retrieved July 5, 2018 .
  6. Network statistics. Retrieved December 2, 2019 .
  7. network load. Retrieved December 2, 2019 .
  8. Network losses. Retrieved December 2, 2019 .
  9. natural gas. Retrieved July 5, 2018 .
  10. ↑ Network structure data. Retrieved December 2, 2019 .
  11. Gas network description. Retrieved December 2, 2019 .
  12. New NAME AND MORE PERSONNEL. Retrieved January 12, 2018 .
  13. About us - Stadtwerke Karlsruhe. Retrieved January 12, 2018 .