BUTTE, Mont. -

NorthWestern Energy officially has a new home, after the Butte-Silver Bow Council of Commissioners voted in favor of a new location.

The agreement allows NorthWestern to build the new building at the corner of Park and Main Streets in Uptown Butte.

NorthWestern Energy employees will stay at the old building at 40 East Broadway Street, until the new building is finished.

Constructing the new building will cost at least $23 million.

Butte's Community Development Director Karen Byrnes told us the city will get $800,000 to $900,000 in property taxes from the building each year. Byrnes said that tax money will go toward building a parking garage on Park Street.

"There are some things that need to happen internally, for us and for them to get to that actual dig in that first scoop of dirt, but it is in motion," said Byrnes.

"This building is something we've needed for decades now, so this is a big step forward, so we were really pleased by the strong support from Butte-Silver Bow," said Northwestern Energy Spokesman Butch Larcombe.

Ground-breaking could start as early as the end of May.