China's top economic planner on Wednesday vowed to ensure a stable power supply for residential use during the winter season in a response to a recent power outage in parts of the country.

The recent power outage has affected residents and factories in northeastern China, triggering fears of a sustained power crunch that will hurt the heating supply as winter draws close to the country's coldest region.

The National Development and Reform Commission (NDRC) noted that it will work closely with relevant departments to tilt resources to northeastern China and go all out to ensure stable energy operations in the region.

The NDRC said that residential power generation demand would be fully guaranteed, adding that residential use only takes up a fraction of the total power supply.

The residential electricity consumption accounts for less than 20 percent of the total usage, and residential gas consumption accounts for less than half of the total gas usage, the NDRC data showed.

The NDRC vowed to take measures in guaranteeing supply, including increase coal imports in an orderly manner, increase domestic natural gas production, and make use of medium- and long-term thermal coal contracts.

It also called on strictly curbing high energy consumption and heavy pollution by industries.