11 hydroelectric reservoirs have run out of water and must stop generating electricity.

That is the information in the report of the Department of Industrial Safety Techniques and Environment of the Ministry of Industry and Trade sent to Minister Nguyen Hong Dien on the operation of hydroelectric reservoirs nationwide, updated to June 8.

11 hồ thủy điện đã hết nước, phải dừng phát điện - Ảnh 1. — Thac Ba Hydropower Reservoir has reached dead water level, 2 generators must stop operating

According to the report, the water flow to the lake has increased slightly compared to June 7 but is still low. The water level of lakes in the Northern, North Central and Southeastern regions is low. Some lakes are close to or below the dead water level.

In the South Central Coast and Central Highlands, the water level of the reservoirs is at the required level according to the operating procedures. However, the amount of water flowing into the reservoirs is mainly to regulate the water flow to ensure the minimum flow. Hydropower plants operate to generate electricity by the water flow, of which some plants have to stop to ensure the safety of the generators when operating with the flow and water column lower than the design, making it difficult to meet the electricity generation demand.

As of June 8, 11 hydroelectric reservoirs nationwide had run out of water and had to stop generating electricity because the flow and water level of the reservoirs were not guaranteed. Among them, many hydroelectric plants provide most of the electricity output for the North such as: Son La, Lai Chau, Huoi Quang, Thac Ba, Tuyen Quang. The Central region has Ban Ve, Hua Na, Trung Son hydroelectric reservoirs. The Southeast region has Tri An lake. The Central Highlands region has Dai Ninh and Pleikrong lakes.

According to the Electricity Regulatory Authority (Ministry of Industry and Trade), hydropower accounts for a large proportion of the electricity supply in the North, at 43.6%, but many large hydropower reservoirs are lacking water for electricity generation. Currently, only Hoa Binh hydropower reservoir still has water in the lake and can maintain electricity generation until around June 12-13.

It is estimated that the total unmobilized capacity of the above-mentioned hydropower sources in the North is at 5,000 MW and could reach 7,000 MW when the Hoa Binh hydropower reservoir reaches its dead water level. As of June 6, the available capacity of hydropower was 3,110 MW, reaching only 23.7% of the installed capacity.

According to the Electricity Regulatory Authority, the total available capacity of the Northern power system (including imported electricity) that can be mobilized to meet the electricity load demand is only 17,500 - 17,900 MW (about 59.2% of the installed capacity). This capacity includes about 2,500 - 2,700 MW transmitted from the South and Central regions to the North.

Meanwhile, it is forecasted that in the coming days, the demand for electricity in the North may reach 23,500 - 24,000 MW. Accordingly, the Northern power system will be short of about 4,350 MW with an average daily output of about 30.9 million kWh (the highest day can reach 50.8 million kWh) and face the risk of a lack of capacity at most hours of the day.

Source link