Publications

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05 Jun 2013
Op-Ed

Corporate Leaders Need to Step Up on Climate Change

Green initiatives are ubiquitous these days, implemented with zeal at companies like Dupont, IBM, Walmart, and Walt Disney. The programs being rolled out—lighting retrofits, zero-waste factories, and carpool incentives—save money and provide a green glow. Most large... View Details

Keywords: by Michael Toffel & Auden Schendler

18 Mar 2024
Research & Ideas

When It Comes to Climate Regulation, Energy Companies Take a More Nuanced View

Common wisdom holds that oil and gas companies, electric utilities, and other industries known for their large carbon emissions generally oppose clean energy policies. Now, a study of corporate advocacy spanning 30 years reveals that many companies are more flexible... View Details

Keywords: by Desmond Dodd; Energy; Utilities

Fall 2020
Article

Climate in the Boardroom: Struggling to Reconcile Business as Usual and the End of the World as We Know It

By: Rebecca Henderson

How does one witness to businesspeople about climate change? Climate change is a problem for the collective and the long term, whereas business often requires a ruthless focus on the individual and the quarter. Climate change is an ethical catastrophe whose solution... View Details

Keywords: Sustainable Business; Climate Change; Corporate Social Responsibility and Impact; Environmental Sustainability

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October 2021
Supplement

Engine No. 1: An Activist Hedge Fund Pursues Stakeholder Capitalism (B)

By: Mark Kramer

Engine Number 1's proxy fight succeeded in part because Exxon shareholders had lost money in the preceding years and because climate change was a high-profile issue. The B case raises the question of whether Engine No. 1's next target should be Facebook, where social... View Details

Keywords: Proxy Fight; Hedge Fund Activism; Social Impact; Business and Shareholder Relations; Climate Change; Corporate Social Responsibility and Impact; Goals and Objectives

16 Oct 2013
Op-Ed

Response to Readers: Combating Climate Change with Nuclear Power and Fracking

With more than 7,500 views and 180-plus tweets, I want to thank everyone for taking the time to read the original HBS Working Knowledge piece, The Case for Combating Climate Change with Nuclear Power and Fracking, and, in particular, for... View Details

Keywords: by Joe Lassiter; Energy; Utilities

September 20, 2024
Article

It’s Time to Unbundle ESG

By: Aaron K. Chatterji and Michael W. Toffel

ESG is at an inflection point. It has come to represent a broad and inchoate aspiration for what business should be doing beyond maximizing shareholder value. With ESG advocates on the defensive, business leaders need a new roadmap to determine which factors to... View Details

Keywords: ESG; ESG (Environmental, Social, Governance) Performance; ESG Ratings; ESG Reporting; ESG Disclosure; Sustainability; Climate; Climate Finance; Climate Risk; Social Accounting; Investment; Governance; Safety; Climate Change; Environmental Sustainability; Corporate Social Responsibility and Impact; Financial Services Industry

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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

SSRN

February 2017 (Revised June 2017)
Supplement

ExxonMobil: Business as Usual? (B)

By: George Serafeim, Shiva Rajgopal and David Freiberg

The case presents ExxonMobil's response to growing pressure to disclose how climate change will impact their business. This includes multiple asset impairments and losing a proxy vote to shareholders to increase climate change related reporting. Supplements the (B)... View Details

Keywords: Oil ＆ Gas; Oil Prices; Oil Companies; Asset Impairment; Predictive Analytics; Sustainability; Environmental Impact; Innovation; Disclosure; Accounting; Valuation; Energy Sources; Ethics; Corporate Disclosure; Governance Compliance; Climate Change; Financial Reporting; Energy Industry; United States

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

December 15, 2023
Article

What Every Leader Needs to Know About Carbon Credits

By: Varsha Ramesh Walsh and Michael W. Toffel

Many companies have begun to look into credits to offset their emissions as a way to support their net zero goals as their target years get closer and closer. As it stands, the carbon credit market is too small to bear the brunt of reducing companies’ impacts on the... View Details

Keywords: Carbon Credits; Climate; Accounting; Carbon Offsetting; Carbon Abatement; Carbon Emissions; Carbon Footprint; Climate Change; Environmental Accounting; Environmental Regulation

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May 2024
Case

Shell's Balancing Act: Resource Allocation and the Green Transition

By: David Collis and Haisley Wert

In mid-2023, amid pressure from climate change activists, shareholder activists, and confronting enormous uncertainty about the future demand for and price of fossil fuels, new Shell CEO Wael Sawan (Harvard MBA 2003) announced a change in strategy for the U.K. oil... View Details

Keywords: Portfolio Analysis; Climate; Oil; Oil And Gas; Oil Companies; Renewables; Petroleum; Investor Demand; Investors; Corporate Strategy; Resource Allocation; Climate Change; Corporate Social Responsibility and Impact; Organizational Change and Adaptation; Organizational Culture; Business and Stakeholder Relations; Business and Shareholder Relations; Energy Industry; United Kingdom

April 2023 (Revised September 2023)
Case

Apple's iPhone Revolution: Pioneering the Circular Economy

By: George Serafeim

When asked to identify an example of a circular economy business model that has generated billions in revenues for a company, ChatGPT, the famous chatbot that in 2022 rocked the world with its ability to perform a variety of tasks, immediately identified and... View Details

Keywords: Iphone; Smartphone; Waste Management; Recycling; Innovation; Product Upgrade; Product Life Cycle; Sustainability; Climate Impact; Digital; Business Model Innovation; Climate Change; Information Technology; Business Model; Electronics Industry; Information Technology Industry

Teaching Interest

Overview

By: Gerald C. Chertavian

I am currently teaching Social Entrepreneurship and Systems Change (SESC) as a 2nd year Elective Course. The premise of the course is that social entrepreneurs don’t just build organizations, they change systems. The course explores the frameworks, tools, mindsets,... View Details

Keywords: Social Impact; Systems Change; Social Entrepreneurship; Environmental Sustainability; Housing; Climate Change; Entrepreneurship; Food; Governance; Leadership; Measurement and Metrics; Social Enterprise; System; Africa; Asia; Europe; Latin America; North and Central America; South America

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

Article

Look 'Outside the Building' for the Future of Leadership

By: Rosabeth M. Kanter

The author discusses what she terms “outside the building” issues, such as climate change, pandemics, and racial/gender justice. These complex issues are “beyond the boundaries of single organizations.” As she writes, “I call this new leadership for the future... View Details

Keywords: Change Leadership; Advanced Leadership; Innovation; Complex Systems; Impact; Leadership; Change; Leading Change; Innovation Leadership

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February 2017 (Revised June 2017)
Case

ExxonMobil: Business as Usual? (A)

By: George Serafeim, Shiva Rajgopal and David Freiberg

Climate change was becoming an important societal and business issue as more governments were introducing climate change related regulations and investors became increasibly worried about stranded assets within oil and gas firms. In September 2016, the U.S. Securities... View Details

Keywords: Oil ＆ Gas; Oil Prices; Oil Companies; Asset Impairment; Predictive Analytics; Sustainability; Environmental Impact; Innovation; Disclosure; Accounting; Valuation; Climate Change; Renewable Energy; Environmental Sustainability; Financial Reporting; Energy Industry

September 2020
Teaching Note

Miami's Tech Future (C): Reaching Another Miami

By: Rosabeth Moss Kanter and Joyce J. Kim

The effects of Miami’s startup scene have not reached many “left-behind” lower-income Black communities, which are disproportionately affected by problems such as segregation and racial discrimination, lack of transportation access, crime, education quality, government... View Details