Oil firms should disclose carbon output, says BlackRock

World's biggest investor wants polluting industries to set targets to cut emissions and reach net zero

BlackRock, the world's biggest investor, has said that oil companies and other polluting industries should disclose their carbon emissions and set targets to cut them, in the latest sign of the rapid reassessment of climate risks by asset managers.

All companies in which BlackRock invests will be expected to disclose direct emissions from operations and from energy they buy, known respectively as scope 1 and scope 2 emissions, the investment firm said in a letter outlining its plans.