Financial Times reports:

Companies rated highly on widely accepted environmental, social and governance metrics pollute just as much as lowly rated companies, research has found. This perverse lack of correlation holds even if companies’ carbon intensity — their carbon emissions per unit of revenue or market capitalisation — is compared purely to their environmental rating, according to Scientific Beta, an index provider and consultancy.

“ESG ratings have little to no relation to carbon intensity, even when considering only the environmental pillar of these ratings,” said Felix Goltz, research director at Scientific Beta. “It doesn’t seem that people have actually looked at [the correlations]. They are surprisingly low.” “The carbon intensity reduction of green [ie low carbon intensity] portfolios can be effectively cancelled out by adding ESG objectives.”

The findings come amid strong demand for ESG investment, with “sustainable” funds globally attracting net inflows of $49bn in the first half of this year, according to Morningstar, while the rest of the fund industry saw outflows of $9bn. Goltz and his colleagues looked at 25 different ESG scores from three major providers: Moody’s, MSCI and Refinitiv. They found that 92 per cent of the reduction in carbon intensity that investors gain by solely weighting stocks for their carbon intensity is lost when ESG scores are added as a partial weight determinant.