Origin Energy has repelled demands from shareholder activists that it update its emissions reductions targets and close its biggest power station two years early in a clash over climate commitments that dominated an at times heated annual meeting in Sydney.

Resolutions proposed by Market Forces and the Australian Centre for Corporate Responsibility over emissions reduction, health risks from coal power and Origin's controversial fracking plans in the Northern Territory, received between 5.3 per cent and 7.9 per cent support from proxy votes.