Scottish Power has been accused of "unfettered profiteering" after the privatised energy giant raked in £924.6 million in profits during the first six months of the year.
Unite said the company - which is owned by Spanish conglomerate Iberdrola - was an example of trickle down economics at its worst.
It comes as the cost of electricity and gas has soared in the past 12 months - plunging thousands of Scots into fuel poverty as a result.
