The 2021 spike seems to be caused by low generation in the first three months (chart for the Rovinari power plant). Is something wrong with the reported time interval (ResolutionCode)? Any experts on the ENTSO-E generation data who know what might be going on? #EnergySky

This second chart presents emission factors per unit of energy output. Compared to tCO2 per TJ, Oltenia's power plants have less extreme emission factors in terms of tCO2 per MWh. For example, Isalnita's emission factor is close to or above the average emission factor in most years. 6/

The chart presents the mean and 95% confidence interval of the 74 power plants reporting lignite energy inputs since 2016. Although there is a similar trend on average, Oltenia's power plants appear to have some of the lowest emission factors across Europe. 3/

I just checked if the emission factors expressed as tCO2 per MWh show a similar pattern (albeit noisier).