Tuesday's weather caused damage to the town's hydro power intake, as it was blocked by logs and other debris.
Resident Nolene Harvey said this morning there had been no power north of Okuru since Wednesday evening, and some businesses, including the only supermarket, Haast Foodcentre, have had to close after their generators blew early this morning.
The 30 to 40 homes were also without power, she said, and the sewerage was not pumping as it also ran on hydro electricity.
"There's quite a bit of food here that is reliant on that power.
"We've had the power out [in previous storms] but we haven't had it out for this long," the Haast resident of over 25 years said.
"You learn to accept it but not like this.
She had contacted the power provider New Zealand Energy - the only provider in Haast - to ask them to turn an emergency generator on to provide power to the township, however, she said she had been told the town would "drain too much power".
She was also told the power was hydro power intake was hoped to be fixed this afternoon which would return power to the town.
New Zealand Energy operating manager David Inch was unable to be reached by the Otago Daily Times this morning for comment.