Programme: Recovery and Resilience Plan

The present project deals with the construction of an electricity storage facility in PI 56722.351.977, PLEVEN CITY, with the following characteristics:
1. Total installed capacity -216 MWh;
2. Total installed power 110 MW;
3. Connected AC power 100 MW and active capacity 200 MWh;
4. guaranteed (useful) capacity for a storage duration of at least 2 hours (defined as the ratio of the guaranteed capacity of the storage facility, in MWh, to its maximum charging/discharging power in MW) is at least 2 hours;
5. The battery containers will meet the parameters for providing reserves for primary frequency regulation and automatic secondary frequency regulation and exchange capacities;
6. Primary frequency control (frequency-dependent mode) is a frequency correction based on the static characteristic of the active power setpoint of the OSEE, the primary control of which is activated by order of the NPO. The primary control function will be integrated into the OSEE control system, and the information about the system frequency will be obtained from the average bus voltage in the OSEE booster substation. An error in the local frequency measurement device for the needs of primary control is allowed, not greater than +/-10 mHz;
7. The primary control reserve is the positive part of the primary control range from the operating point before the disturbance to the maximum power for primary control;
8. Battery warranty period - 5 years, with the possibility of extension to the warranty for 6-10 years;
9. Warranty period for transformers and inverters - 5 years, with the possibility of extension to the warranty for 6-10 years;
10. Their replacement in case of damage - 10 years;
11. Warranty for all housings of the storage facility - 10 years;
The estimated costs for building a direct optical connection to the telecommunications network of ESO EAD will be at its own expense and are not subject to financing under the procedure.