Chavez's announcements late Wednesday were a significant strategic shift in his attempts to prevent a widespread power collapse in the coming months through rolling blackouts of up to four hours a day across the country.

"I've ordered the electrical outages to be suspended, only in Caracas," Chavez said on state television. "Because this government has to be capable of recognizing mistakes made and fixing them in time."

Chavez said that since the outages began in Caracas at midnight Tuesday, authorities had cut power to the wrong sectors of the city. "I think in one area they repeated the outage a few hours later," he said.

He added that some stoplights were left without power.

"Enough. I said if that's what is going on, there was an error there," Chavez said.

Chavez said he asked Electricity Minister Angel Rodriguez to resign and that "he has taken it like a soldier."

He made the announcement shortly before some parts of Caracas were set to begin four-hour outages at midnight.

He said he ordered the chief of the city's state electric utility not to schedule any more blackouts until the process is reviewed. It was unclear how soon the government could attempt to restart the measures in Caracas.

Chavez earlier Wednesday urged Venezuelans to accept the cutbacks and likened them to a national energy diet.

The government says rationing is necessary to prevent a widespread power collapse if the water levels behind Guri Dam—which supplies most of Venezuela's electricity—fall to critical lows in the coming months due to a severe drought. Officials also acknowledge that some gas- and oil-fueled thermoelectric plants are producing below capacity while undergoing repairs.