The Macallan distillery, near Craigellachie and the Glenfiddich distillery in Dufftown have been given permission by Moray Council to embark on significant expansion programmes.
The Macallan distillery is set to receive new cooperage and warehouse facililities worth £100m; and Glenfiddich will invest in new facilities, tun rooms and machinery.
The council granted permission at a meeting last week.
Bosses at Glenfiddich, the second biggest malt whisky manufacturer globally, said the expansion was necessary to support the future of its whisky production.
Following last week’s council meeting Stewart Cree, leader of Moray Council said: “For these global industries to commit to this level of investment in Moray is a measure of their confidence in the Speyside brand.
“It is recognised the world over as the finest malt whisky you can get, and that draws thousands of visitors to our area every year.”
The Macallan planning application was agreed with two covenants, that sound levels were monitored each quarter and that the proposed lighting scheme was referred back to the committee for further discussion.