He added; “We need a holistic approach – ‘bads’ can be outweighed by ‘goods’. There should be what’s often called a ‘net benefit test’ – does the company provide a net benefit to society?”
Three speakers addressed the next topic, “Aggregate Confusion: The divergence of ESG ratings”, Florian Berg, researcher at MIT Sloan School of Management; Roberto Rigobon, Professor of Management and Professor of Applied Economics at the Sloan School, and Julian Koelbel, head of research at the Centre for Sustainable Finance and Private Wealth at the University of Zurich.
Julian Koelbel noted: “ESG ratings agencies have, since 2010, become influential institutions. Investors with $80 trillion in assets under management integrate ESG information into their decisions. ESG ratings are the backbone of such investments.”
Existing major players in the ratings world are buying up such agencies and regulators are taking them into account. But, he said, there was far from being a single method for awarding ESG ratings.
“They disagree and diverge substantially,” he said. “Not always, but sometimes.” An example, he said, is the technology company Intel, rated outstanding on ESG grounds by one agency but as merely average by others.
This divergence has two profound consequences, he said. “Investors have trouble finding out which companies are ‘good’, and companies are left asking ‘what is expected of us?’”
Why the divergence? Mr Koelbel explained that three elements go to make up the ratings regime of each agency, and each employs these elements differently. The first is “aggregation”, the weight given to different factors in calculating the rating “How are indicators aggregated into one score?”.
The second is measurement; “Raters use different ways of measuring the same categories. How are these attributes measured?”
The third, he said, is scope; “Which attributes are included?”
Florian Berg listed some of the factors that ratings agencies take into account: air quality, ecological impacts, labour practices, waste and wastewater management, human rights and community relations. “ESG raters need to be much more transparent as to how they measure these factors,” he said, adding: “Credit ratings and ESG ratings are fundamentally different and divergence in the latter will persist.”
“Credit ratings measure one attribute, default risk, but ESG ratings reflect a large number of different attributes, and there is no agreement on what they should measure.”
However, he did not foresee any immediate moves to a more uniform system of awarding ESG ratings, as has been called for in some quarters. “We have to embrace the divergence of ESG ratings,” he said, “because no-one really knows the truth.”
Roberto Rigobon was asked if some ratings agencies were more friendly towards managements than others. “No”, he replied, “I don’t think so.”
Managing climate risk
The final session was entitled “Managing Climate Risk” and was presented by Martin Skancke, chair of the board of the Principles for Responsible Investment and a member of the Financial Stability Board’s task force on climate-related financial disclosure (TCFD). Speaking of the physical fact of carbon dioxide (CO2) emissions, he said there had been a “structural break” since the start of the industrial revolution.
“This has been the fastest change in the history of the planet,” he said, adding: “This necessitates a significant transition away from fossil fuels.”
TCFD, he said, has provided a framework for climate risk reporting, “governance, strategy, risk management, metrics and targets”. But this framework, he said, differs from others in the ESG space. Unlike them, it has less to do with measuring how companies affect the climate and focus instead on how climate affects companies.
“How will firms make money in a world that has managed to meet its carbon reduction objectives?” he asked. “Some companies [such as some oil and car companies] will be able to make the transition, but others will not.
“The danger is that we have a capital market that is inefficient and does not allocate capital in light of this climate risk. It is important to remember also that climate risk is just one of many risks that face companies and investors.”
There has been an assumption that existing energy giants will be leading the way into the zero-carbon future, not least because many of their marketing and public relations efforts have made much of this. But Mr Skancke was not entirely convinced.
“Will the fossil fuel companies be the energy companies of the future?” he asked. “It is possible, given they have the engineers, the project managers and the market knowledge that could be leveraged to bring about the transition to a low-carbon economy.
“But would it not be relatively easy for new companies, set up specifically for low-carbon energy generation, to replicate these advantages?”
He concluded: “It may make more sense for investors to put pressure on fossil fuel companies to increase their dividends and restrain or reduce their investment plans.” The funds thus released, he suggested could be put to use by investors in taking positions in sustainable energy companies.