On May 20, Zhejiang Energy Regulatory Office issued the Transaction Rules for the Participation of the Third Party Independent Subject in the electricity ancillary service in Zhejiang Province (Trial) (Draft for Comment), which proposed to make full use of the multi-fusion and flexible power grid to promote the integration of "power, grid, load and storage". According to the principle of "who benefits, who assumes", fully excavate the third-party independent subjects including electric energy storage devices, electric vehicles (chargers), load-side control resources, load aggregators, virtual power plants, pumped storage power stations and others to participate in the electricity ancillary service, so as to improve the safe and stable operation level of Zhejiang power grid and promote the consumption of clean energy such as wind power, photovoltaic and nuclear power.
The third party independent subjects can participate in the market independently as the operating subjects, or participate in the market on behalf of the resources of the subordinate units through the way of aggregation. The power generation side energy storage devices can participate in the market independently or by their power generation enterprises as agents. Virtual power plants can aggregate different types of resources, and at the initial stage, the resources aggregated by the same unit should be of the same type in principle.
[Basic technical parameters of the third party independent subject] (I) When participating in the peak shaving ancillary service transaction, the adjusting capacity shall not be less than 2.5MWh, the adjusting power shall not be less than 5MW, and the continuous response time shall not be less than 1 hour; (II) When participating in the spinning reserve ancillary service, the adjusting capacity shall not be less than 1MWh, the adjusting power shall not be less than 1MW, and the continuous response time shall not be less than 1 hour; (III) When participating in frequency regulation ancillary services, the rated charging/discharging power shall not be less than 5MW and the continuous response time shall not be less than 2 hours.
[Ceiling Price] Price ceiling for ancillary services: During the low load period, peak cut will be RMB 400 / MW/h. During the peak load period, peak cut will be RMB 500 / MW/h. Peak cut and adjustment will be RMB 500 / MW/h, spinning reserve will be RMB 15 / MW/h, primary frequency regulation will be RMB 120 / MW/h, and secondary frequency regulation will be RMB 60 / MW/h, which will be adjusted timely according to market operation.
[Expense Sharing] The cost of ancillary services provided by the third party independent subject shall be apportioned between the power generation side and the market users, and shall be listed in the ancillary service cost of the settlement bill. Market users shall apportion the ancillary service fees according to the proportion of their actual electricity consumption to the total social electricity consumption in the current month and multiplied by the apportionment coefficient ku (temporarily 0.5). The remaining expenses shall be included in the power generation side, the apportionment shall be made according to the "Two Detailed Rules" in East China.
Source: https://zjb.nea.gov.cn/u/cms/www/202105/201114503vh0.pdf