The agreement was reached recently between the two sides at a meeting in China’s Dongxing City.
The electricity will be bought through the 110-kV Shengou-Mong Cai power transmission line between May and July.
The Chinese firm will make preparations to ensure the power supply for Vietnam as soon as possible.
In the 2005-2016 period, the Northern Power Corporation also purchased power from China via the 110-kV Shengou-Mong Cai power transmission line.
The northern region of Vietnam would see a power shortfall of between 1,600- 4,900MW from May to July due to the prolonged heat.
Electricity of Vietnam has sent a proposal to Vietnam Oil and Gas Group on prioritising gas supply for electricity production amid increasing demand in summer.