General provisions
Article 27
1. Demand response services provided to system operators shall be distinguished based on the following categories: (a) remotely controlled: (i) demand response active power control; (ii) demand response reactive power control; (iii) demand response transmission constraint management. (b) autonomously controlled: (i) demand response system frequency control; (ii) demand response very fast active power control. 2. Demand facilities and closed distribution systems may provide demand response services to relevant system operators and relevant TSOs. Demand response services can include, jointly or separately, upward or downward modification of demand. 3. The categories referred to in paragraph 1 are not exclusive and this Regulation does not prevent other categories from being developed. This Regulation does not apply to demand response services provided to other entities than relevant system operators or relevant TSOs.