I need to know what is the Automatic Governer Control (AGC) scheme used in Estonia or how AGCs in Estonia at thermal power plants (oil shale) like Eesti, Balti, or Auvere behave or deal in case of grid secondary response such as MW drop or increase happen. In other words, what is the status of these Estonian AGCs' behavior in case of grid response (status: on, off, or another answer)? I am mainly looking for AGC criteria used at oil shale-fired power plants (in Estonia) - Grid Stability support mechanism of primary and secondary responses. I hope you help me Thank you