One of the world's largest pension funds will vote with activists against Origin's board over the company's approach to climate change risk disclosure at its looming annual meeting.

The California Public Employees Retirement System (CalPERS), a US-based pension fund that has $US340 billion ($431 billion) in assets under management, has announced plans to vote against Origin's board and support three climate change-related resolutions at the company's meeting on Wednesday.

Origin chief executive Frank Calabria. Institutional investors are looking to force changes in Origin's management. Credit:Glen Watson

AustralianSuper and the Australian Council of Superannuation Investors are also understood to have thrown their support behind CalPERS' initiative at the Origin meeting.

The resolutions for the Origin meeting were put forward by environment finance campaigning group Market Forces and address basic disclosure, how Origin plans to deal with a change to a zero carbon emissions point and how the company plans to monitor its fugitive emissions from its upstream operations, namely those around the Condamine River.