Workers employed by Drax Hydro, who operate power stations across Scotland, are to be balloted for strike action in a dispute over pay.
Around 50 Unite union members will take part in the ballot covering Stonebyre (Lanark), Cruachan (Loch Awe) and Glenlee (Castle Douglas) power stations.
The ballot, which opens on 1 February and closes on 22 February, follows the rejection of an 8% pay rise - significantly below the current rate of inflation - 13.4% (RPI).