Do you have any sources on the claim that it have been close to causing loss of frequency? In Denmark that relies quite a bit more on wind they are saying that

Do you have any sources on the claim that it have been close to causing loss of frequency? In Denmark that relies quite a bit more on wind they are saying that it should happen for no more than 5 minutes this year (and that may higher than what actual happens, as they have averaged less than 1 minute per year the last 10 years). Furthermore the ENTSOE Mid-term Adequacy Forecast 2020 [0] forecasts Scandinavia to have between 0 and 0.1 hour loss of load expectation. [0]: https://www.entsoe.eu/outlooks/midterm/ https://www.entsoe.eu/outlooks/midterm/