How much energy will the 2014 World Cup consume?

None of these numbers include other sources of Cup-related energy use, like building new transportation infrastructure and stadiums.

And speaking of stadiums, while everyone would probably love to attend the final match in Rio de Janeiro's famous Maracana stadium, the vast majority of us will be watching at home. Which means we're contributing to the Cup's carbon footprint, too.

A spike in energy use is likely to occur in places when millions of people turn on their TVs at the same time to watch a match. For example, in the United Kingdom, the record for an energy surge during a TV program occurred during the 1990 World Cup, when England went to a shootout against West Germany in the semi-final. (Incidentally, West Germany prevailed and went on to win the trophy. West Germany's title run was led by Jurgen Klinsmann, who is now coaching the U.S. national team.)

During that match, the UK National Grid experienced a spike of 2,800 megawatts of demand, as people across England tuned in to watch the game's climax. Other significant power surges in the UK occurred during England's 2002 quarter-final match against Brazil (2,570 MW surge), and the 2011 royal wedding of Prince William and Kate Middleton (2,400 MW surge).

In fact, it's relatively common for the UK to experience a spike in power demand during big soccer matches. National Grid operators have become accustomed to forecasting higher electricity demand during games, according to its operations manager, Jon Fenn. Not only does electricity consumption spike from millions of TV sets, a surge is felt most acutely during halftime or just after the final whistle, when everyone heads to the kitchen to turn on electric tea kettles or grab a snack from the fridge.

"It must be one of the few jobs where watching World Cup matches is essential to your work rather than a distraction, because we need to know to the second when half time and full time occur to be ready for the surges in demand," Fenn told The Telegraph in an interview before the 2010 World Cup.

The 2014 World Cup will be transmitted to every country in the world and could potentially be the most watched sporting event in history.

Now we know it could set new records in terms of greenhouse gas emissions, too.