Rules & Methodologies. 5.4.1 Common rules for the operation in normal state and alert state 1. During the operational hour the TSOs’ operators follow the trend of the operational situation and continuously estimate upcoming need of readjusting the balancing. In normal and alert state conditions TSOs use market based FRR activation as long as possible. These include: a. mFRR activation (see section 5.3.2); b. aFRR activation (see section 5.3.2
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Samples: Nordic System Operation Agreement (Soa) – Annex Load Frequency Control & Reserves (Lfcr), Nordic System Operation Agreement (Soa) – Annex Load Frequency Control & Reserves (Lfcr), Nordic System Operation Agreement (Soa) – Annex Load Frequency Control & Reserves (Lfcr)