The water level of hydroelectric reservoirs is above the dead water level.

Regarding the electricity supply situation, the Ministry of Industry and Trade said that although the water flow is poor, due to the limited mobilization of large multi-purpose hydropower plants (except Hoa Binh Hydropower Plant) to prepare for the upcoming hot days, the water level of multi-purpose hydropower reservoirs is above the dead water level.

Specifically, on June 11, the total water flow to major hydroelectric reservoirs in the North decreased by 26% compared to the water flow on June 10, and the water levels of the reservoirs decreased somewhat. Specifically, the water level of Lai Chau hydroelectric reservoir decreased by 0.7m compared to June 10, Hoa Binh reservoir was 23.1m from the dead water level, and the capacity could not be mobilized by about 5,000 MW.

Water level of hydroelectric reservoirs is above dead water level - 1

In addition, some units with short-term problems have also been reconnected to the national grid such as Son Dong S2, L1B-S1 Mong Duong 1. The total maximum capacity of the Northern source reached 18,533 MW, of which the maximum capacity of hydropower was 2,937 MW.

Also providing information on the situation of power supply troubleshooting, the Ministry of Industry and Trade said that only one new incident occurred in Hai Phong and was reconnected to the national grid 3.5 hours after the incident occurred.

On June 11, 6 coal-fired thermal power plants in the Northern region had reduced capacity, including: An Khanh, Nghi Son 2, Cam Pha, Hai Phong, Thai Binh 2, Mong Duong 1.

Water level of hydroelectric reservoirs is above dead water level - 2

Previously, according to information from the National Power System Dispatch Center (AO), on June 10, the total available power capacity in the North reached 20,321 MW, of which the available capacity of hydropower was 5,244 MW.

Power outages in the North have improved, while the South and Central regions are still guaranteed to meet their electricity needs.

The mobilization of thermal power plants in the North increased by 1,000 MW. Incidents at some thermal power units (S1 Nghi Son 1 - 300MW, Thai Binh 1 S1 - 300MW, Quang Ninh S1 -300MW) have been successfully resolved.

Along with that, the mobilization of renewable energy plants with a mobilized capacity of wind power is 33.9 million kWh, solar power is 70.2 million kWh. 19 transitional renewable energy plant projects with a total capacity of 1221.12 MW.

However, according to AO's assessment, power source incidents still pose a high risk in many places, especially coal-fired thermal power plants due to severe heat, high load demand, and continuous mobilization of generators. According to statistics, the total capacity of coal-fired power plants with prolonged incidents that cannot be mobilized is about 3,250 MW, and the total short-term incidents are 410 MW.

Meanwhile, the mobilization of hydropower plants at the multi-purpose hydropower reservoirs in the North, namely Lai Chau, Son La, Ban Chat, Huoi Quang, and Tuyen Quang, has improved, as the water supply has improved compared to June 8. However, most of the hydropower reservoirs are still near the dead water level, resulting in the inability to mobilize about 5,000 MW of source capacity.

It is forecasted that in the next few days, the North will have moderate to heavy rain, and hydroelectric reservoirs will actively accumulate water to exceed the dead water level.

The Ministry of Industry and Trade and EVN are continuously urging and seeking solutions to increase the operation of thermal power sources to cope with the water shortage in large hydropower reservoirs. At the same time, the units continue to implement the Prime Minister's directive on saving electricity; ensuring the supply of coal and gas for power generation; actively adding new power sources to the system; focusing on overcoming power source problems.

Thanh Lam

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