No Tricks Zone by P Gosselin on 13. April 2021
Due to the government mandated coal phase-out, 11 coal-fired power plants with a total capacity of 4.7 GW were shut down on January 1, 2021. But the coal phase-out ended up lasting only 8 days, after which several power plants had to be reconnected to the grid due to a prolonged low-wind period.
The affected large Heyden power plant had to be restarted six times by the end of February in order to secure the power supply.
The Federal Network Agency has now confirmed that it has reclassified the Heyden, Datteln, Walsum 9 and Westfalen power plants, which had already been shut down, as system-relevant and that they now must remain on standby as reserve power plants. The owners will therefore be required to continue operation in the short term.
Never mind that this sporadic operation of these coal plants is horribly inefficient and costly, as you will find out below.
Coal plant shutdowns have increased grid frequency instability
The large power plants are to primarily provide their rotational energy, i.e. run at full speed but not feed any electricity into the grid. The rotational energy is urgently needed to bridge the time needed by the medium- and peak-load power plants to deliver the missing power to the grid by adjusting the load accordingly. Smaller plants simply have too little flywheel mass to be able to provide this compensation. We described how to stabilize a power grid in more detail in the article “How to stabilize the power grid“. The number of these critical frequency drops has already risen sharply this year.
More:
https://notrickszone.com/2021/04/13/2021-german-coal-plant-phaseout-lasted-only-8-days-put-back-online-to-stabilize-shaky-grid/
