The plan is comprised of several measures. Electricity power suppliers will be prohibited of running routine maintenance drills during the matches. The suppliers must also have technical and call center crews with additional personnel in the days of matches.

It is unthinkable to let the fans down during the matches, said ONS general director Hermes Chipp.

Chipp said he is particularly concerned with the nine-minute period right after the end of the matches. During the match itself, people usually gather in front of TV sets. But when the game is over, millions of fans usually turn on the light of other rooms and use electric devises, such as microwaves and showers.

To further complicate the matter, some of the Brazilian teams matches in the Cup will end around 5:45 pm. This is the time when it is getting dark here at this period of the year and people usually turn on the lights. Chipp added authorities had to face the same problem in the 1998 World Cup in France, when the end of matches also coincided with the sunset. That was not the case of the 2002 World Cup in South Korea/Japan.

In 2002, we were not concerned. The matches were broadcast here in the morning, far from the peak hour, which is between 5 p.m. and 6 p.m., Chipp added.