Publications

January 2024 (Revised January 2025)
Case

Colbún and Chile’s Energy Transition

By: Forest Reinhardt, Jenyfeer Martinez Buitrago and Mariana Cal

In May 2023, Colbún, Chile’s second-largest electricity generator, plans capacity expansions using renewable energy and storage. This strategy supports Chile’s commitment to carbon neutrality (also known as net zero emissions) by 2050. The case delves into the... View Details

Keywords: Transition; Energy Generation; Renewable Energy; Climate Change; Investment; Governing Rules, Regulations, and Reforms; Infrastructure; Organizational Change and Adaptation; Expansion; Business Strategy; Energy Industry; Utilities Industry; Latin America; South America; Chile

June 2022 (Revised January 2023)
Case

South Africa – a 'Just Energy Transition'

By: Richard Vietor

South Africa, like most other countries, is in the process of reducing its carbon emissions to comply with COP26 and, hopefully, reach net zero emissions by 2050. However, because South Africa relies almost wholly on coal (93%) for electricity, and on coal for... View Details

Keywords: Energy; Economic Development; Climate Change; Coal Mining; Emission Reduction; Environmental Regulation; Environmental Sustainability; Environmental Law; Labor and Management Relations; Labor Unions; Natural Resources; Energy Policy; Energy Sources; South Africa

2020
Case

Brightline: Targeting a Successful Future with High Speed Rail

By: Andrew J. Hoffman

High-speed rail (HSR) is a high-performance transportation technology that is time competitive with airplanes and automobiles, and is an environmentally preferable alternative due to its low carbon dioxide emissions. Brightline is a Florida HSR system in Phase II of... View Details

Keywords: Environmental Sustainability; Marketing Strategy; Segmentation; Transportation Industry

October 2007 (Revised October 2009)
Case

Global Climate Change and BP

By: Forest L. Reinhardt and Mikell Hyman

Following the sudden resignation of Sir John Browne, Tony Hayward, BP CEO, must decide how global climate change management will figure into BP's corporate strategy. Climate change management was a major part of BP's strategy under Browne: In 1997 Browne broke from his... View Details

Keywords: Change Management; Climate Change; Corporate Strategy; Corporate Social Responsibility and Impact; Management Teams; Environmental Sustainability; Government and Politics; Energy Sources; Global Strategy; Operations; Utilities Industry; Energy Industry; United Kingdom

Bill Vrattos is a Senior Lecturer at the Harvard Business School, where he teaches Investment Strategies, a course on public market investing in the elective curriculum. He also co-teaches Private Equity Projects and Ecosystems, where he mentors student groups on... View Details

10 Jan 2020
News

Competing in the Age of AI

February 2024 (Revised April 2024)
Case

CPP Investments—The Road to Zero

By: Vikram Gandhi and Radhika Kak

In February 2022, Canadian Pension Plan (CPP) Investments, the investment management organization that managed funds for the CPP, one of the biggest pension plans in the world, announced a net-zero commitment for its portfolio by 2050. Under its CEO, John Graham, it... View Details

Keywords: Environmental Sustainability; Asset Management; Investment Portfolio; Leading Change; Business and Stakeholder Relations; Corporate Social Responsibility and Impact; Financial Services Industry; Canada; California

April 2020 (Revised May 2021)
Case

Middlebury College: Energy2028

By: Brian Trelstad, Michael Norris and John McKinley

In 2018, Middlebury College’s board of trustees is considering a proposal called Energy2028 that would push the small, liberal arts and sciences college in Vermont to become a net zero carbon emitter, decrease energy usage by 25%, divest fossil fuels from its... View Details

Keywords: Divestment; Energy; Higher Education; Energy Conservation; Climate Change

Strategy consultant, former CTO & CPO, public & private company board member, retail & climatetech entrepreneur, early stage investor. Father of two, husband, sailor, hiker, and aspirational road biker.

John is a senior lecturer in the... View Details

September 2019
Article

Bill McKibben’s Influence on U.S. Climate Change Discourse: Shifting Field-Level Debates Through Radical Flank Effects

By: Todd Schifeling and Andrew J. Hoffman

This article examines the influence of radical flank actors in shifting field-level debates by increasing the legitimacy of preexisting but peripheral issues. Using network text analysis, we apply this conceptual model to the climate change debate in the United States... View Details

Keywords: Government Legislation; Climate Change; Public Opinion; Power and Influence; Policy; United States

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May 2021
Teaching Plan

Middlebury College: Energy2028

By: Brian Trelstad and Michael Norris

Teaching Plan for HBS Case No. 320-029. In 2018, Middlebury College’s board of trustees is considering a proposal called Energy2028 that would push the small, liberal arts and sciences college in Vermont to become a net zero carbon emitter, decrease energy usage by... View Details

Keywords: Divestment; Energy; Higher Education; Energy Conservation; Climate Change

August 2021 (Revised September 2022)
Case

Patch Technology: Making It Easy to Do the Right Thing

By: Tomomichi Amano, Robert J. Dolan and Carol Zhang

In 2021, the growing threat of climate change pushed companies around the world to understand that significant behavioral change was necessary. While many recognized that decreasing emissions was critical, more sophisticated players such as Microsoft began to recognize... View Details

Keywords: Environmental Management; Marketing; Digital Platforms; Climate Change

Research Summary

Managing sustainability in supply chains

By: Michael W. Toffel

I am examining codes of conduct, management process standards, and government voluntary programs that address environmental and labor issues, seeking to understand what enables some of these programs to actually deliver on their promise of distinguishing organizations... View Details

Keywords: Environment; Environmental Performance; Environmental Regulation; Environmental Strategy; Regulation; Supply Chain; Supply Chain Management; Manufacturing Industry; Auto Industry; Service Industry; Construction Industry; United States; California

Fall 2013
Article

Engaging Supply Chains in Climate Change

By: Chonnikarn Fern Jira and Michael W. Toffel

Suppliers are increasingly being asked to share information about their vulnerability to climate change and their strategies to reduce greenhouse gas emissions. Their responses vary widely. We theorize and empirically identify several factors associated with suppliers... View Details

Keywords: Knowledge Sharing; Motivation and Incentives; Risk Management; Climate Change; Supply Chain Management; Environmental Sustainability

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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

September 2024 (Revised February 2025)
Case

Aramco: Navigating the Energy Transition

By: Tarun Khanna and Gizem Cihan Dincsoy

In March 2024, Amin Nasser, president, and CEO of the Saudi Arabian Oil Company (Aramco), had just delivered a speech about the future of energy at a global energy conference. The world was behind schedule in meeting long-term climate change goals. The global shift... View Details

Keywords: Energy Transmission; Oil ＆ Gas; Economic Diversification; Corporate Strategy; Leadership; Business Strategy; Goals and Objectives; Transition; Environmental Sustainability; Diversification; Energy Industry; Saudi Arabia

2015
Book

How Culture Shapes the Climate Change Debate

By: Andrew J. Hoffman

Though the scientific community largely agrees that climate change is underway, debates about this issue remain fiercely polarized. These conversations have become a rhetorical contest, one where opposing sides try to achieve victory through playing on fear, distrust,... View Details

Keywords: Climate Change; Culture; Values and Beliefs; Knowledge Dissemination

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