China's top oil refiners are boosting diesel production to address fuel shortages across the nation.

Sinopec, the nation's largest oil refiner, said it boosted daily processing of crude oil to 4.27 million barrels in November, up 9.9 percent from a year ago. It would also import 200,000 tons of diesel in November to supplement the drying diesel storage in parts of China, said the company.

PetroChina, the country's top oil and gas producer, also pledged to increase its diesel output by 6.3 percent in November from a month ago.

A number of local governments this year ordered blackouts for enterprises as the country gears up to conserve energy and reduce emissions. In response, many factories turned to diesel fuel to generate electricity so they can continue operations during periods of forced power outages.

The China Chamber of Commerce for the Petroleum Industry estimated that more than 2,000 private gas stations in south China have shut down due to a lack of diesel.