Proxy advice firm CGI Glass Lewis recommended that Origin Energy shareholders vote in favour of a $10.5 billion bid from a consortium led by investment firm Brookfield Asset Management.

The move follows the recommendation of Institutional Shareholder Services to vote in favour of the deal.

The consortium, including EIG Global Energy Partners, offered a "best and final" $9.53 per share for Origin.

CGI Glass Lewis cited the offer as compelling, aligning with Origin's perspective that it adequately accounts for the risks associated with the energy transition.

Pension fund AustralianSuper, the largest shareholder in Origin, said it would vote against the deal, which needs to receive support from 75% of shareholders.