CBH has responded to reports it helped fund a political ad blitz, saying it is not associated with the campaign.
It was reported last week CBH was one of a group of about 50 companies which are part of Western Australians for Lower Power Prices and had kicked-in to a $10 million fighting fund.
But CBH general manager operations David Capper this week said it had no association with the group.
The group is believed to be rolling out advertisements targeting Energy Minister Mike Nahan and the Barnett Government in marginal seats.
The goal is to highlighted proposed changes to WA's electricity system which could cost consumers a total $107m extra a year.
"CBH in no way supports any anti-government publicity campaign run by the group calling themselves Australians for Lower Power Prices - financially or otherwise," Mr Capper said.