The water inflow to hydropower reservoirs is still very low compared to the average water level of many years. The power output mobilized from hydropower in the first 2 months of 2020 was only 3.37 billion kWh, 2.19 billion kWh lower than the plan. The total amount of water accumulated in the hydropower reservoirs is 18.29 billion m3 (equivalent to 7.92 billion kWh). Thus, the shortage amount of water compared to the normal rising water level is 17.42 billion m3 (equivalent to 7.12 billion kWh). By earlier March 2020, hydropower reservoirs witnessed a water level lower than that of the same period of 2019 by 5m to 24m and the total amount of water was lower than 7.47 billion m3, equivalent to 3.15 billion kWh. Even in the first 2 months of 2020, although the load capacity has not increased, the whole system had to be mobilized at 230 million kWh from high-cost diesel generator so as to maintain water level in hydropower reservoirs to meet operational requirements during the dry season.
Currently, most of the big reservoirs in the Northern region have the water inflow lower than the average water level of many years (AWLMY), reaching only 17-83% of AWLMY. In the Central region, water shortage is more serious, with the water inflow of most reservoirs is much lower, reaching only 2-76% of AWLMY. The reservoirs having the lowest water inflow include Binh Dien, A Vuong, Dak Mi 4, Song Bung 2, Song Bung 4, Buon Kuop, Sre Pok 3, etc. And in the South, most of the reservoirs also have the water inflow lower than AWLMY, reaching only 12-70% of AWLMY; in which the Dong Nai 3, Tri An and Dai Ninh reservoirs have the lowest water inflow.
The water inflow situation has caused a large shortage of power output mobilized from hydropower, then the mobilization of power output from coal-fired and gas-fired thermal power plays a particularly important role in ensuring power supply for the dry season as well as the whole 2020.
For renewable energy (solar, wind, biomass, etc.), in the first 2 months of the year, the National Load Dispatch Center has as much as possible mobilized renewable energy sources with a total output of 1.8 billion kWh, accounting for nearly 5% of the total power generation of the whole system (meanwhile the installed capacity of renewable energy system accounts for about 9% of the entire power system). Particularly for rooftop solar power, by earlier March 2020, the total of more than 24,300 projects were installed and operated with a total capacity of 465.8MWp. This is a very modest figure compared with the potential of rooftop solar power development in our country. One of the reasons for the slowdown in rooftop solar power development is that people are still waiting for the issuance of new solar power prices after 30 June 2019.
The situation of power supply from March to the end of the dry season of 2020 is forecasted to face many difficulties, EVN hopes that agencies, offices, manufacturers and people regularly raise the awareness of safe and economical power usage, turning off electrical appliances when not needed, rational use of air conditioners, should not concurrently use electrical appliances with large capacity (such as air conditioners, electric cookers, etc.) to minimize risk of local overload of the grid, while ensuring the saving of electricity costs for customers.
CONTACT INFORMATION:
Communication Department - Vietnam Electricity Group
E-mail: bantt@evn.com.vn
Phone: 024.66946405 / 66946413; Fax: 024.66946402
Address: No. 11, Cua Bac Street, Truc Bach Ward, Ba Dinh District - Hanoi;
Website: www.evn.com.vn, www.tietkiemnangluong.vn
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