More wind and solar power sources to be added this year

VIETNAM, January 18 –

The utilization of RE sources in 2022 continues to face many challenges as the power grid has suffered from the amount of RE sources that have been commissioned in recent years. — Photo

HÀ NỘI — The Ministry of Industry and Commerce will no longer add wind and solar power to the plan this year, due to a lack of entry facilities to transfer them to the national grid.

At the National Load Allocation Center’s 2021 review meeting on January 10, its Deputy Director Nguyễn Quốc Trung said that the total electricity produced and imported, including rooftop solar power generation, is expected to reach 275.5 billion kWh this year, up 7.9% from 2021. .

Trung said total hydropower generation is expected to be 82.5 billion kWh, 3.8 billion kWh more than in 2021.

Traditional power sources expected to come on stream in 2022 were 3,407 MW, including large thermal power plants with a capacity of 600 MW each, such as Nghi Sơn 2 and Sông Hậu 1, with no more wind power , agricultural solar energy and roofing. solar power to the grid this year.

Trung also said the southeast gas source will reach 13.5-14.5 million cubic meters per day, while the southwest gas sources will reach 3.9-4.5 million meters. cubes per year.

The purchase of electricity from China with a production of around 380 million kWh in May and June was also planned.

For northern Việt Nam, Trung said peak load is expected to increase by 9.5 to 13 percent, or increase by 2,497 to 2,870 MW during the year.

Although the north has many potential shortage risks during peak capacity, especially during the hottest months of May to July, the National Load Dispatch Center has offered to request to adjust the repair schedule, by modifying the wiring at Nghi Sơn if necessary so that the Nghi Sơn 2 power station could supply the region when needed, while calculating the purchase of Chinese electricity under the direction of Vietnam Electricity (EVN).

“Currently, low cost gas fields are declining while high cost gas fields have been commissioned with the policy that BOT gas fired power plants continue to be used, resulting in an increase in the cost of new gas fields, affecting the electricity cost of the whole system,” Trung said.

Even after all the new projects approved to supply power to major load centers such as Hà Nội and HCM City as well as release renewable energy (RE) have been energized, most of the 500 kV were at full load.

“The use of renewable energy sources in 2022 continues to face many challenges, as the power grid has suffered from the amount of renewable energy sources that have been commissioned in recent years,” Trung said. .

Disputes were reported in the provinces of Bình Định, Khánh Hoà, Phú Yên, Đắk Lắk, Đắk Nông, Kon Tum, Gia Lai, Ninh Thuận, Bình Thuận, Cà Mau and Bạc Liêu.

Moreover, with the increasing pace of renewable energy sources being commissioned, the problem of stabilizing the power system in real time remained a big challenge, he added.

Last year, the total new power source commissioned was 7,433 MW, bringing the total installed capacity of the national power system to 78,682 MW, including 75 wind power plants with a total capacity of about 3,600 MW. .

At the end of 2021, the total number of national dispatching plants was 337, an increase of 73 plants compared to 2020.

Currently, 104 power plants participate directly in the electricity market with a total installed capacity of 27,990 MW, or 36.8% of the total installed capacity of power plants. During the year, four new plants entered the market with a total capacity of 372 MW.

In addition, the National Dispatcher energized, tested and accepted many major transmission line and transformer projects on the 500 kV power grid, such as the energizing of eight new transformers with a total capacity of 4 387 MVA, increasing the capacity of five transformers with a total capacity of 3,900 MW. , and 14 newly supplied 500 kV lines with a total length of 2,022 km.

At the same time, the industry built 203 new 220kV – 110kV transformers with a total capacity of 13,016 MVA and 236 new sections of 220kV – 110kV transmission lines with a total length of 3,450 km. —VNS

Rosemary C. Kearney