Altbach power station

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Altbach power station, in the state of Baden-Württemberg, Germany, has 1,036 megawatts (MW) of generating capacity (783 MW coal-fired and 253 MW gas-fired, with another 750 MW of gas-fired energy proposed).

The Altbach/Deizisau, Stuttgart-Münster, and Stuttgart-Gaisburg plants together form the Mittlerer Neckar district heating network.


The undated satellite below shows the plant in Altbach, Esslingen.

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The first power plant in Altbach was built in 1899. In the late 1940s, the forerunner of today's power plant was built. In 1950, Block 1 went into operation. Block 2 and 3 followed in 1960, block 4 in 1971. Block 1 was shut down in 1982 and demolished in 1985. Blocks 2 and 3 were demolished in 1993.[1][2] In 2021, ENBW announced that as part of their coal phase-out plan, they intend to build a new combined-cycle gas-fired turbine of 750MW to be commissioned in 2026.[3]

Existing power plant

CHP plant 1

HKW 1 was added to the grid in mid-1985. Originally, this facility was called Block 5. The power plant initially had a gross electrical output of 420 MW. By retrofitting the high and low pressure turbine in 2006, the electric power was increased to 433 MW. The district heating output of 280 MW th remained unchanged.[2]

On February 27, 2017, the Executive Board [1] announced that EnBW intended to shut down the block. Since July 5, 2017, the power plant has been in reserve and must be kept operational until 31 March 2020.[2]

CHP plant 2 with gas turbine E

HKW 2 started operation in 1997. It initially had a gross capacity of 336 MW. With a modernization in 2012, the capacity was increased to 350 MW. Hard coal or natural gas is used as fuel for the main boiler.[2]

In addition, HKW 2 has a gas turbine (gas turbine E) with a capacity of 68 MW and a waste heat boiler. The combined electrical power is 428 MW. Like in HKW 1, there is also the option of district heating extraction of 280 MW th in the main boiler operation, which can be increased by a further 87 MW th in co-operation with the waste heat boiler.[2]

Combination block 4 with gas turbine A

Block 4 went into operation in 1972. It has a pilot gas turbine (gas turbine A) type Siemens V93.0 with a capacity of 53 MW and a main oil fired turbine with oil / natural gas boiler with steam turbine. In addition, there is the possibility of directing the exhaust gases of the gas turbine in the main boiler, which allows a combined cycle operation. The electric power is then 238 MW, and in a combined heat and power mode a maximum of 175 MW el and 180 MW th are possible.[2]

The combination block 4 is in cold reserve.[2]

Gas turbines B and C

The two gas turbines went into operation in 1974 and 1976 and have an electrical output of 60 and 85 MW and can be operated either with natural gas or fuel oil.[2]

New gas plant

According to EnBW, given the infrastructure connection of Altbach, building a new gas-fired power plant at the location "is not unlikely."[4] EnBW reports that they are seeking to make the turbine climate-neutral by the 2030's, with the intention to burn cleaner fuels such as Hydrogen (currently capable of burning 10-25% as part of fuel mix) as supply becomes more available.[5][3]

Project Details

  • Sponsor: Energie Baden-Württemberg
  • Parent company: EnBW Energie Baden-Württemberg AG[6]
  • Location: Altbach, Esslingen, Baden-Wuerttemberg, Germany
  • Coordinates: 48.717185, 9.37079 (exact)
  • Coal Type: Bituminous
  • Gross generating capacity (operating): 1,036 MW
    • Coal-fired: 861 MW
      • CHP unit 1: 433 MW (start-up 1985), subcritical
      • CHP unit 2: 428 MW (start-up 1997), subcritical
    • Gas-fired: 266 MW
      • A: Gas-fired with unknown technology, 53 MW[7] (start-up 1971)[8][3]
      • B: Gas-fired with unknown technology, 60 MW[7] (start-up 1973)[8][3]
      • C: Gas-fired with unknown technology, 85 MW[7] (start-up 1975)[8][3]
      • E: Gas-fired with unknown technology, 68 MW[7] (start-up 1997), CHP[8][3]
    • Gross generating capacity (pre-construction): 750 MW
      • HKW3: Gas-fired combined cycle with CHP, 750 MW[9] (start-up in 2026)[5]

Resources and articles


  1. "Altbach Coal Power Plant Germany," GEO, accessed Jan 2018
  2. 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 "Heizkraftwerk Altbach/Deizisau," Wikipedia, accessed Nov 9, 2019
  3. 3.0 3.1 3.2 3.3 3.4 3.5 "Praesentation Buergerinfoveranstaltung Altbach 20211026 ( 1) ( 1) : Free Download, Borrow, and Streaming". Internet Archive. Retrieved 2022-04-28.
  4. "EnBW Stellungnahme zur Konsultation der deutschen Übertragungsnetzbetreiberzum Entwurf des Netzentwicklungsplans Strom 2030," March 4, 2019
  5. 5.0 5.1 FuelCellsWorks. "EnBW Energie Baden Württemberg : Wants To Make The Altbach/Deizisau Power Plant Coal-Free By 2026". Retrieved 2022-06-14.
  6. Legal Entity Identifier (LEI) 529900JSFZ4TS59HKD79 Global Legal Entity Identifier Foundation, accessed January 2020
  7. 7.0 7.1 7.2 7.3 "Heizkraftwerk Altbach Deizisau". (in Deutsch). Retrieved 2022-06-14.
  8. 8.0 8.1 8.2 8.3 Kraftwerkeliste Bundesnetzagentur (German Federal Network Agency), version from November 2021
  9. "Praesentation Buergerinfoveranstaltung Altbach". Internet Archive. Retrieved Jun 13th, 2022. Check date values in: |access-date= (help)

Related articles

External Resources

Wikipedia also has an article on Altbach power station. This article may use content from the Wikipedia article under the terms of the GFDL.