|Power plant location||Eschweiler, North Rhine-Westphalia|
|Power plant type||Large-scale lignite-fired power plant with 4 units and 2 topping gas turbines (TGT)|
|Commissioned in||1955-1975 (lignite units)
|Electrical output (gross)*||2.119 MW|
|Electrical output (net)*||1.989 MW|
|Electrical output TGTs (net)||400 MW|
|Number of units||2 units E,F (300MW)
2 units G,H (600MW)
2 TGTs (270MW)
Facts and figures
Producing electricity since 1955
With its distinctive architecture, the Weisweiler power plant is visible from the busy A4 motorway near Aachen. Its sole fuel supplier, Inden opencast mine, is hidden behind it and will come into the view of passing drivers in a few years, once mining has progressed further.
From 1955 to 1975, 8 power plant units of increasing size were commissioned. Today, there are still two 300-MW and two 600-MW units on line at the site. In addition, the power plant utilises steam produced in the neighbouring waste incineration plant for generating electricity. Around 2030, Weisweiler will cease to generate lignite-based electricity as the Inden opencast mine will be exhausted by then.
2007/2008: gas turbines commissioned
The Weisweiler power plant does not just generate electricity. It also supplies district heat to Forschungszentrum Jülich research facility, the village of Inden/Altdorf and, via the municipal district heating grid, parts of Aachen.
Around ten years ago, RWE Power installed two topping gas turbines at the site. The Weisweiler power plant is located close to key long-distance gas pipelines. They supply the fuel for generating about 200 MW of electricity with each of the two turbines. Since natural gas is relatively expensive compared to other fuels, the turbines are only started up in periods of peak demand and when the electricity prices are favourable. When they are operational, their waste heat is used to pre-heat the feedwater of the connected lignite units G and H. In this way more steam becomes available for generating electricity. This approach saves energy, increases the overall efficiency of the power generation process and reduces emissions. Here, gas does not replace lignite, but supplements it. The lignite units are continuously used, as in the past, to generate base-load electricity.