Publications

September 2023 (Revised October 2024)
Case

Forecasting Climate Risks: Aviva’s Climate Calculus

By: Mark Egan and Peter Tufano

In late 2021, Ben Carr, Director of Analytics and Capital Modeling at Aviva Plc (Aviva)—a leading insurer with core operations in the UK, Ireland and Canada,—was preparing for an upcoming presentation before the company's board which included its CEO, Amanda Blanc,... View Details

Keywords: Climate Risk; Climate Finance; Forecasting; Insurance; Risk Measurement; Climate Change; Risk Management; Forecasting and Prediction; Insurance Industry; United States

Research Summary

Corporate transparency and information disclosure strategies

By: Michael W. Toffel

This research focuses on transparency and information disclosure strategies, a topic of growing importance in environmental sustainability, corporate strategy, stakeholder relations, and public policy. My prior research in this area explored why... View Details

Keywords: Transparency; Disclosure Strategy; Disclosure; Environment; Environmental Performance; Regulation; Supply Chain; Environmental Sustainability; United States

October 2022
Case

Sustainable Finance at Itau BBA

By: George Serafeim, Maria Loumioti and Benjamin Maletta

As of August 2022, the Itau BBA had structured dozens of sustainability linked bonds, which made future interest payments a function of the borrower meeting a target for a sustainability metric, and had solidified its reputation as a pioneer of sustainable finance in... View Details

Keywords: Sustainable Finance; Corporate Social Responsibility; Environmental Sustainability; Growth Strategy; Debt Contracting; Performance Metrics; Risk Assessment; ESG (Environmental, Social, Governance) Performance; Financial Instruments; Risk Management; Debt Securities; Measurement and Metrics; Banking Industry; Pulp and Paper Industry; Latin America

Article

Managing Climate Change: Lessons from the U.S. Navy

By: Forest Reinhardt and Michael W. Toffel

The U.S. Navy operates on the front lines of climate change. It manages tens of billions of dollars in assets on every continent and on every ocean, which take many years to design and build and then have decades of useful life. This means that it needs to understand... View Details

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June 2023
Case

Investing in the Climate Transition at Neuberger Berman

By: George Serafeim and Benjamin Maletta

By mid-2023, Neuberger Berman (NB), an active asset manager, had grown its assets under management to about half a trillion dollars and took pride in its client centricity and innovative spirit. Responding to client demand for investment products that integrated... View Details

October 7, 2021
Article

Carbon Might Be Your Company’s Biggest Financial Liability

By: Robert G. Eccles and John Mulliken

The price of carbon may be zero in many places today, but it’s unlikely to remain zero for long. That means that many companies have hidden liabilities on their books. To cover their carbon short position, executives can take several steps: Measure the position in... View Details

Keywords: Climate Risk; Climate Finance; Risk Management; Governance; Environmental Accounting; Climate Change; Environmental Sustainability

June 2023 (Revised February 2024)
Case

Betting on Green Steel

By: George Serafeim and Sofoklis Melissovas

'Betting on Green Steel' traces the innovative journey embarked upon by a group of MBA students who have set out to conceive a novel steelmaker that pioneers the production of green steel. The ensemble is confronted with a series of critical choices that will shape the... View Details

Keywords: Decarbonization; Sustainability Management; Technology; Industrialization; Climate Risk; Energy; Entrepreneurship; Environmental Sustainability; Technology Adoption; Climate Change; Innovation and Invention; Business Strategy; Family Business; Steel Industry; Middle East; India

August 2012 (Revised September 2013)
Case

EnerNOC: DemandSMART

By: Michael W. Toffel, Kira Fabrizio and Stephanie van Sice

EnerNOC is an energy company with an innovative business model: it serves as an intermediary between electric utilities and electricity users. It contracts with electricity users willing to reduce demand during periods of peak energy demand, and sells this as excess... View Details

Keywords: Production Planning; Productivity; Environmental Protection; Energy; Environment; Business Government Relations; Laws And Regulation; Business Model; Environmental Sustainability; Innovation and Invention; Opportunities; Risk and Uncertainty; Governing Rules, Regulations, and Reforms; Supply Chain Management; Production; Energy Conservation; Energy Industry

Research Summary

Overview

By: Robert S. Kaplan

Kaplan introduced time-driven activity-based costing (TDABC) to provide the cost component in Michael Porter's Value Based Health Care framework of delivering superior patient outcomes at lower societal cost. TDABC is becoming the global standard for health care... View Details

2022
Working Paper

The Issuance and Design of Sustainability-linked Loans

By: Maria Loumioti and George Serafeim

Sustainability-linked loans (i.e., syndicated loans for which pricing is linked to a sustainability performance indicator) have rapidly evolved into a significant private debt product. We find that sustainability-linked lending has been available mostly to borrowers... View Details

Keywords: Sustainability; Sustainability Management; Credit Products; Loan Contracts; Loans; Corporate Finance; Credit Risk; Environment; ESG; ESG Ratings; Climate Change; Finance; Borrowing and Debt; Risk and Uncertainty; Credit

2016
Working Paper

Signaling without Certification: The Critical Role of Civil Society Scrutiny

By: Susan A. Kayser, John W. Maxwell and Michael W. Toffel

In response to stakeholders' growing concerns, companies are joining voluntary environmental programs to signal their superior environmental management capabilities. In contrast to the literature's focus on certification programs that require a third-party audit, we... View Details

Keywords: United Nations; Labor Standards; Supplier Relationship; Procurement; Sustainability; Sustainability Management; Quality And Safety; Risk; Globalization; Globalized Markets and Industries; Governance; Working Conditions; Supply Chain Management; Supply Chain; Corporate Social Responsibility and Impact; Quality; Risk and Uncertainty; Safety; Reputation

Teaching Interest

Business Opportunties in Climate Adaptation

By: John D. Macomber

This is a Short Intensive Program or SIP at Harvard Business School. It’s an optional student offering prior to the formal start of the Spring semester the following week. SIPs tend to cover new material on current topics, to be less formal than the HBS Case Study... View Details

Keywords: Resilience; Climate Risk; Climate Impact; Fire Protection; Insurance Risk Exposure; Hedge Fund; Public Health; Public Health Measures; Climate Change; Adaptation; Infrastructure; Real Estate Industry; Transportation Industry; Insurance Industry; United States; Africa; Latin America

July 2023 (Revised May 2024)
Case

Vytal: Packaging-as-a-Service

By: George Serafeim, Michael W. Toffel, Lena Duchene and Daniela Beyersdorfer

The Germany-based startup Vytal operated the largest digital-native reusable packaging-as-a-service network globally, having raised nearly €15 million, established a large network of restaurant partners, and prevented the use of millions of single-use take-out food... View Details

2021
Working Paper

Science-Based Carbon Emissions Targets

By: David Freiberg, Jody Grewal and George Serafeim

We examine the effect of voluntarily adopting a standard for setting science-based carbon emissions targets on target difficulty and investments to achieve those targets. We find that firms with a track record of setting and achieving ambitious carbon targets are more... View Details

Keywords: Target; Targeting; Target-setting; Target Efficiency; Management Control Systems; Management Accounting; Environment; Environmental And Social Sustainability; Climate Change; Environmental Management; Environmental Accounting; Environmental Sustainability; Management Analysis, Tools, and Techniques

Research Summary

Overview

By: John C. Mulliken

My research involves climate strategy, climate finance, and building climate technology ventures. View Details

Keywords: Climate; Climate Risk; Climate Finance; Governance; Climate Change; Strategy; Retail Industry

2021
Article

Decarbonizing Everything

By: Alex Cheema-Fox, Bridget LaPerla, George Serafeim, David Turkington and Hui (Stacie) Wang

We analyze how the use of different climate risk measures leads to different portfolio carbon outcomes and risk-adjusted returns. Our findings are synthesized in a rules-based investment framework, which selects a different type of climate metric across industries and... View Details

Keywords: Climate Risk; ESG; ESG (Environmental, Social, Governance) Performance; ESG Disclosure; ESG Disclosure Metrics; ESG Ratings; Investing; Investing For Impact; Investment Strategy; Environment; Decarbonization; Climate Change; Environmental Sustainability; Environmental Management; Environmental Accounting; Investment; Strategy; Investment Portfolio; Investment Return

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March 2017 (Revised June 2019)
Case

CEO Activism (A)

By: Michael W. Toffel, Aaron K. Chatterji and Julia Kelley

This case introduces CEO activism, a phenomenon in which business leaders engage in political or social issues that do not relate directly to their companies. The case uses several examples to describe why business leaders are engaging in CEO activism and the potential... View Details