Pursuant to Article 116 of the Energy Law

4.3.6.2. Secondary control 
4.3.6.2.1. Each hydro-generation unit with P
nom

50 МW must have secondary control 
capability and the minimum 0.3 P
nom
control band must be provided. 

---

41 
4.3.6.2.2. Each turbo-generation unit with P
nom

150 МW, except for those that are able to 
combine generation of thermo and electric power, must have secondary control capability, 
and the minimum control band to be provided is as follows:
- for turbo-generators using coal as fuel: control band above 0.15P
nom
; 
- for turbo-generators using gas or oil as fuel: control band above 0.25P
nom
. 
4.3.6.3. Tertiary control 
4.3.6.3.1. All hydro-generators must have synchronization time to transmission grid less than 
15 minutes. 
4.3.6.3.2. All engines in pumping plants, i.e. hydro-generators with reversible operation 
capability, must have synchronization time to transmission grid less than 15 minutes (for both 
operational regimes). 
4.3.6.3.3. Each generator must have capability of operating under reduced generation of 
active power. Minimum level of that generation, where the stable operation of the generator 
is guaranteed, so-called technical minimum, must meet the following values: 
- for hydro-generators: P
min
≤ 0,45P
nom
; 
- for turbo-generators using coal as fuel: P
min
≤ 0,7P
nom
; 
- for turbo-generators using gas or oil as fuel: P
min
≤ 0.4P
nom
; 
- for turbo-generators with a combined cycle: for a gas turbine
P
min
≤ 0.4P
nom
, and for a steam turbine P
min
≤ 0.8P
nom
; 
- 
for other types of generators P
min
≤ 0.8P
nom
.