Global electricity demand is expected to grow by 4% - or more than the total consumption of Japan - each year through 2027, but the expansion of low-emissions energy sources should help offset the trend,

Perhaps surprisingly, in advanced economies like the U.S., total and per capita electricity demand has stayed relatively flat or even declined since 2009. That's starting to change.

The agency predicts in a forecast released Friday the world will need 4% more electricity annually through 2027. Meeting that demand will require adding more generating capacity than all of Japan — every year.

And it's not just datacenters driving the need for 3,500 TWh of new energy generation by 2027 The world is going to need a lot of new electricity generation in the next three years to keep up with an "unprecedented" spike in demand,