Publications

April 2025
Teaching Note

Allbirds: Decarbonizing Fashion (A) and (B)

By: Michael W. Toffel, Ken Pucker and Stacy Straaberg

Teaching Note for HBS Case Nos. 622-024, 625-004, 625-005, and 625-702. The Allbirds: Decarbonizing Fashion (A) case introduces Allbirds as a footwear startup not only focused on simple design, comfort, and sustainable natural materials but on decarbonizing the wider... View Details

Keywords: Decarbonization; Climate Impact; Environmental Strategy; Innovation; Product Design; Supply Chain Management; Innovation Strategy; Innovation and Management; Product Development; Climate Change; Environmental Management; Environmental Sustainability; Business Startups; Initial Public Offering; Knowledge Sharing; Apparel and Accessories Industry; Fashion Industry; United States; California

April 2025
Supplement

Allbirds: Decarbonizing Fashion PowerPoint Supplement

By: Michael W. Toffel, Ken Pucker and Stacy Straaberg

The Allbirds: Decarbonizing Fashion (A) case introduces Allbirds as a footwear startup not only focused on simple design, comfort, and sustainable natural materials but on decarbonizing the wider fashion industry. Background material highlights the growing... View Details

Keywords: Decarbonization; Climate Impact; Environmental Strategy; Innovation; Product Design; Supply Chain Management; Innovation Strategy; Innovation and Management; Product Development; Climate Change; Environmental Management; Environmental Sustainability; Apparel and Accessories Industry; Fashion Industry; United States; California

March 2025
Case

Calyx Global: Rating Carbon Credits

By: Michael W. Toffel and Adam Chen

This case describes how rating agencies and other organizations are seeking to improve the quality of carbon credits sold in the voluntary carbon market to organizations seeking to use them to supplement their internal decarbonization efforts to meet their net zero... View Details

Keywords: Service Design; Certification; Auditing; Auditor Reputation; Carbon Credits; Carbon; Rating Agency Disagreement; Ratings; Climate Change; Business Model; Environmental Sustainability; Corporate Social Responsibility and Impact; Conflict of Interests; Reputation; Business Strategy

2025
Article

Educating Students and Professionals on the Business Implications of Climate Change

By: Michael W. Toffel

As climate change poses unprecedented challenges and opportunities, the private sector must play a pivotal role in both adaptation and mitigation efforts. This article discusses the new Harvard Business School Online course, Business and Climate Change, designed to... View Details

Keywords: Climate Impact; Online Courses; Online Education; Decarbonization; Mitigation Policies; Climate Risk; Climate Change; Risk Management; Science; Policy; Business Education; Adaptation

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November 2024
Supplement

Allbirds: Decarbonizing Fashion (A) and (B) Video Supplement

By: Michael W. Toffel, Kenneth P. Pucker and Stacy Straaberg

September 2024
Case

TechEnergy Ventures: Innovating Through Corporate Venture Capital

By: Rebecca Karp and Lena Duchene

This case examines TechEnergy Ventures, the corporate venture capital (CVC) arm of the Techint Group, and its role in scaling innovation within the energy sector. Founded in 2021, TechEnergy Ventures operates with a mandate to invest in disruptive technologies to... View Details

September 2024
Supplement

Allbirds: Decarbonizing Fashion (B)

By: Michael W. Toffel, Kenneth P. Pucker and Stacy Straaberg

The Allbirds: Decarbonizing Fashion (B) case encourages students to assess Allbirds’ product development and go-to-market strategies now that Allbirds is a publicly listed company. The (B) case provides a 2024 update on Allbirds including its initial public offering,... View Details

August 2024
Course Overview Note

Development while Decarbonizing: India's Path to Net-Zero

By: Vikram S Gandhi and Radhika Kak

Keywords: Decarbonization; Climate Change; India

August 2024
Case

Iogen: Decarbonizing Hard-to-Abate Sectors

By: George Serafeim, Charlotte Foody and John Mulliken

Brian Foody, CEO of Iogen Corporation, was an early leader in advanced biofuels, developing a range of technologies to transform agricultural waste into transportation fuel. With $100 million in revenue and 350 patents across various biofuel technologies, Iogen was... View Details

Keywords: Technology; Biofuel; Market Attractiveness; Decarbonization; Technological Innovation; Climate Change; Energy; Environmental Sustainability; Transformation; Market Entry and Exit; Strategy; Energy Industry; United States; United Kingdom

August 2024
Background Note

Mitigating Climate Change with Machine Learning

By: Michael W. Toffel, Kelsey Carter, Amy Chambers, Avery Park and Susan Pinckney

This note highlights how machine learning is being used to decarbonize (reduce GHG emissions) several key sectors including electricity, transportation, building, industrial processes, and agriculture -- and how machine learning is being used to accelerate efforts to... View Details

Keywords: Climate; Artificial Intelligence; Adaptation; Climate Change; AI and Machine Learning; Innovation and Invention

July 2024 (Revised December 2024)
Background Note

District Heating: An Overview

By: Willy Shih and Michael W. Toffel

This note provides an overview of district heating: systems in which central plants generate heat that is conveyed by steam or water through a set of insulated pipes to send heat to residential and/or commercial buildings. It describes key elements of the system (heat... View Details

Keywords: Decarbonization; Energy Efficiency; Energy Storage; Energy Transmission; Construction; Energy; Buildings and Facilities; Governing Rules, Regulations, and Reforms; Climate Change; Operations; Energy Industry; Denmark; Europe; United States

June 2024
Simulation

Vehicle Lifecycle Emissions Calculator

By: Mike Toffel, Shirley Lu and George Serafeim

This Vehicle Lifecycle Emissions Calculator calculates the greenhouse gas emissions over the lifespan of internal combustion engine (ICEs) vehicles, battery electric vehicles (BEVs), and plug-in hybrid electric vehicles (PHEV), including those associated with their... View Details

Keywords: Decarbonization; Environment; Carbon Accounting; Carbon; Carbon Abatement; Electric Vehicles; Automobiles; Environmental Accounting; Environmental Management; Environmental Sustainability; Strategy; Technological Innovation; Supply Chain; Business and Stakeholder Relations; Climate Change; Transportation; Transportation Industry; Auto Industry; Battery Industry

June 2024 (Revised December 2024)
Case

Climate Governance at Linde plc (A)

By: Lynn S. Paine, Suraj Srinivasan, Emilie Billaud and Vincent Dessain

In July 2023, the Linde plc board of directors' sustainability committee convened in London to review the company's environmental performance, with a focus on decarbonization and clean energy. Linde was the world's largest industrial gas supplier, with a workforce of... View Details

Keywords: Climate Change; Environmental Sustainability; Green Technology; Multinational Firms and Management; Corporate Accountability; Corporate Disclosure; Corporate Governance; Governing and Advisory Boards; Compensation and Benefits; Innovation Strategy; Leading Change; Goals and Objectives; Business and Shareholder Relations; Chemical Industry; United States; Germany; Europe; North America; London