New MBIE data reveals New Zealanders will be using 80 percent more power than we do now, by 2050

It shows demand is expected to grow as fossil fuel use switches to electricity, electric vehicles increase and new demand - such as data centres come online.

MBIE market manager Mike Hayward says he's confident we can rely more on electricity from renewable sources.

He says the last quarter showed a 51 percent increase in generation from solar.