1. Battery storage for renewables: market status and technology outlook;Kempener,2015
2. ENTSO-E. Consultation Report FCR Cooperation; 2017.
3. National Grid. National Grid frequency services; 2019 [accessed 4 June 2019]. .
4. Order no. 755: Frequency regulation compensation in the organized wholesale power markets. Federal Energy Regulatory Commission, Washington DC; 2011.
5. Placement and sizing of battery energy storage for primary frequency control in an isolated section of the Mexican power system;Ramírez;Elec Power Syst Res,2018