Power suppliers will be fined between VND500,000 and VND40 million, ten times higher than previous rates, if they do not accurately inform residents of blackouts beforehand, according to a new decree.
The decision by the prime minister goes into effect this August, replacing a previous regulation established in June 2003.
Power suppliers will be fined VND3-4 million if they halt or reduce the flow of power in a manner not clearly communicated to customers.
The same punishment will be imposed on suppliers who do nothing to fix problems brought up by customers.
The Hanoi People's Committee earlier this month ordered the city's power supply company to stop power cuts.
The order followed rising public complaints about continuous and long-lasting blackouts across the city, making it particularly difficult to withstand the current heatwave.
Last month, the government also asked Vietnam's sole energy distributor, Electricity of Vietnam (EVN), to ensure power to all residents following the recent blackouts.