Both the Scottish and UK governments have agreed to establish two green freeports in Scotland.
The special economic zones, offering tax breaks and lower business tariffs, are being promoted by the UK government as part of its "levelling-up" agenda.
The Scottish Greens, the SNP's Scottish government partners, criticised the plans as "greenwashing" and said it was a "corporate giveaway".
The deal comes as Prime Minister Boris Johnson visits Scotland.
A bidding process will begin in the spring and it is hoped the new sites will open in 2023.
For much more from BBC News on this development and see story on the Welsh government regards a 'freeport'.