Dozens of investors are backing the call for ExxonMobil, the US oil group, to “stress test” the potential impact on its business of policies to address the threat of climate change.Shareholders have submitted proposals for the annual meetings of Exxon and eight other US energy companies, recommending that they analyse the financial risks they face if governments attempt to limit the increase in global temperatures to 2C, which was the objective agreed at the Paris climate talks at the end of last year. Calpers, the California state retirement fund that had $301bn under management as of last June, has registered with the Securities and Exchange Commission, the US regulator, to be able to lobby other investors in support of the proposal at Exxon. The moves reflect growing interest among investors in the financial implications of climate change. They also show how environmental campaigners have become increasingly adept at working with shareholders in fossil fuel companies to raise awareness of the issue. The New York state retirement fund and the Church of England submitted the proposal at Exxon, asking the company to publish an annual assessment of the financial impact on its proved reserves and potential resources of restrictions on carbon intended to hit the 2C target.