Publications

2015
Chapter

Chief Sustainability Officers: Who Are They and What Do They Do?

By: Kathy Miller and George Serafeim

Keywords: Sustainability; Environment; Strategy; Strategy Execution; Corporate Governance; ESG; Organization Design; Change Management; Leadership

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2022
Working Paper

Machine Learning Models for Prediction of Scope 3 Carbon Emissions

By: George Serafeim and Gladys Vélez Caicedo

For most organizations, the vast amount of carbon emissions occur in their supply chain and in the post-sale processing, usage, and end of life treatment of a product, collectively labelled scope 3 emissions. In this paper, we train machine learning algorithms on 15... View Details

Keywords: Carbon Emissions; Climate Change; Environment; Carbon Accounting; Machine Learning; Artificial Intelligence; Digital; Data Science; Environmental Sustainability; Environmental Management; Environmental Accounting

2016
Working Paper

Shareholder Activism on Sustainability Issues

By: Jody Grewal, George Serafeim and Aaron Yoon

Shareholder activism on sustainability issues has become increasingly prevalent over the years, with the number of proposals filed doubling from 1999 to 2013. We use recent innovations in accounting standard setting to classify 2,665 shareholder proposals that address... View Details

Keywords: Sustainability; Activism; Activist Investors; Activist Shareholder; Corporate Social Responsibility; Environment; Corporate Performance; Corporate Accountability; Corporate Social Responsibility and Impact; Performance; Environmental Sustainability; Corporate Governance; Business and Shareholder Relations; Investment Activism

November 2022 (Revised April 2025)
Teaching Note

Driving Decarbonization at BMW - Teaching Note

By: Shirley Lu, George Serafeim and Michael W. Toffel

Teaching note in support of the case "Driving Decarbonization at BMW" (HBS No. 123-008) View Details

March 2019
Article

Economics of Converting Renewable Power to Hydrogen

By: Gunther Glenk and Stefan Reichelstein

The recent sharp decline in the cost of renewable energy suggests that the production of hydrogen from renewable power through a power-to-gas process might become more economical. Here we examine this alternative from the perspective of an investor who considers a... View Details

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February 2016 (Revised October 2017)
Case

Nuclear Energy: An Answer to Climate Change?

By: Michael W. Toffel, Glen W. S. Dowell and James Weber

Environmental activist groups have traditionally opposed nuclear energy. However, the growing environmental problems associated with global climate change require major changes to reduce the carbon intensity of electricity generation. Should environmental groups... View Details

Keywords: Nuclear Energy; Nuclear Power; Climate Change; Safety; Activism; Nonprofit; Environment; Environmental Protection; Social Movements; Energy; Energy Generation; Environmental Sustainability; Non-Governmental Organizations; Non-Renewable Energy; Energy Industry; United States

Educators

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

Educators

2023
Working Paper

Toward Decision-Useful Carbon Information

By: Gunther Glenk

Companies are increasingly viewed as crucial drivers for timely decarbonization. Current accounting practices for greenhouse gas (GHG) emissions, however, often leave corporate carbon disclosures and abatement obscured. Here I introduce a taxonomy for assuring the... View Details

October 16, 2019
Article

Where ESG Fails

By: Michael E. Porter, George Serafeim and Mark Kramer

We are entering a new stage of understanding of the linkage between investment performance and social impact. Previous approaches, such as socially responsible investing and environmental, social, and governance (ESG) screening, have obscured the opportunities for... View Details

Keywords: ESG; Sustainability; Environment; Social Impact; Impact Investing; ESG (Environmental, Social, Governance) Performance; ESG Reporting; Shared Value; Environmental Sustainability; Social Issues; Investment; Value; Strategy

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

September 2014 (Revised February 2017)
Case

Turkcell

By: Felix Oberholzer-Gee, Charles C.Y. Wang and Esel Cekin

This case centers around the shareholder dispute between three major shareholders of Turkcell, and how its management vied against increasing regulatory intervention and market competition in the absence of a fully-functioning board. The battle for control of the... View Details

Keywords: Financial Performance; Regulatory Environment; Telecommunications; Marketing; Value Added; Pricing; Shareholder; Boards Of Directors; Governing and Advisory Boards; Corporate Governance; Conflict and Resolution; Business and Shareholder Relations; Telecommunications Industry; Turkey

Educators

September 2016
Teaching Note

Nuclear Energy: An Answer to Climate Change?

By: Michael W. Toffel and Glen W. S. Dowell

This case asks students to take the perspective of a nuclear energy industry association whose objective is convincing politicians and the public about the merits of its industry. The association is considering whether to approach environmental nongovernmental... View Details

Keywords: Nuclear Energy; Nuclear Power; Environment; Climate Change; Nonprofit Organizations; Environmental Protection; Environmental Strategy; Energy; Energy Sources; Renewable Energy; Partners and Partnerships; Alliances; Strategy; Energy Industry; United States

2025
Working Paper

Managing Remote Work Quality: Evidence from Auditing Management Systems Standards

By: Ashley Palmarozzo, Michael W. Toffel and Melissa Ouellet

Remote work has become more common, providing operational flexibility and productivity benefits, but questions remain about whether and how it affects work quality. We investigate the quality effects of remote work in a context in which remote work separates workers... View Details

Keywords: Audit; Auditing; Remote Work; Compliance; Assessment; Environment; Management Systems; Quality Management; Quality Management System; Quality; Operations; Supply Chain Management; Environmental Management; Safety

February 2013
Teaching Note

Australia: Commodities and Competitiveness (TN)

By: Laura Alfaro, Richard H.K. Vietor and Hilary White

For the past few decades, Australia has dealt with the benefits and costs of repeated mining booms—inflation, a housing bubble, a current account deficit and growing dependence on China. Between 1996 and 2007, however, Australia had most of these issues under control... View Details

Keywords: Competitiveness; Inflation; Mining; Current Account; Exchange Rates; Trade; Capital Flows; Commodities; Environment; Carbon Tax; Goods and Commodities; Australia

Research Summary

Overview

Hisano’s research addresses the social and cultural implications of technological development and economic changes mainly in the twentieth-century United States. By analyzing the regulation, manipulation, and presentation of food color, her current book project links... View Details

Keywords: Business History; Consumer Behavior; Agribusiness; Food And Environment; Business Strategy; Commercialization; Business And Government; Advertising; Goods and Commodities; Food; History; Government and Politics; Marketing; Business and Government Relations; Advertising Industry; Food and Beverage Industry; Chemical Industry; United States

2020
Article

Public Sentiment and the Price of Corporate Sustainability

By: George Serafeim

Combining corporate sustainability performance scores based on environmental, social, and governance (ESG) data with big data measuring public sentiment about a company’s sustainability performance, I find that the valuation premium paid for companies with strong... View Details

Keywords: Sustainability; ESG; ESG (Environmental, Social, Governance) Performance; Investment Management; Investment Strategy; Big Data; Machine Learning; Environment; Environmental Sustainability; Corporate Governance; Performance; Asset Pricing; Investment; Management; Strategy; Human Capital; Public Opinion; Value; Analytics and Data Science

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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

Sustainable Operations

Professor Lee studies how operational synergies between different supply chains can be used to create economic value and improve environmental sustainability. She uses an operational lens to approach sustainability problems, focusing on the management of material flow... View Details

Keywords: Environment; Environmental Operations; Sustainability; Operations Management; Operational Disruptions; Supply Chain; Supply Chain Management; Food Security

February 2023
Article

Climate Solutions Investments

By: Alex Cheema-Fox, George Serafeim and Hui (Stacie) Wang

An increasing number of companies are providing products and services that help reduce carbon emissions in the economy. We develop a methodology to identify those companies and create a sample of publicly listed climate solutions companies allowing us to study their... View Details

Keywords: Decarbonization; Climate Finance; Climate Impact; Climate Risk; Environment; Sustainability; Carbon Emissions; Electric Vehicles; Energy; Renewables; Climate Change; Corporate Social Responsibility and Impact; Environmental Sustainability; Emerging Markets; Investment Portfolio