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Publications

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  • All HBS Web  (119,663)
    • Faculty Publications  (71)

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    • All HBS Web  (119,663)
      • Faculty Publications  (71)

      Trumbull, GunnarRemove Trumbull, Gunnar →

      Page 1 of 71 Results →
      • August 2024 (Revised November 2024)
      • Case

      Commonwealth Fusion Systems: Born at Scale

      By: Joshua Lev Krieger, Jim Matheson, Kyle Myers, Gunnar Trumbull and Richard Vietor
      This case study chronicles the journey of Commonwealth Fusion Systems (CFS) on its ambitious mission to commercialize fusion energy and become the world’s leading provider of fusion power plants. Emerging from a “special arrangement” with MIT's Plasma Science and... View Details
      Keywords: Nuclear Energy; Innovation; Entrepreneurship; Entrepreneurial Finance; Energy Generation; Commercialization; Science-Based Business; Technological Innovation; Market Entry and Exit; Energy Industry
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      Krieger, Joshua Lev, Jim Matheson, Kyle Myers, Gunnar Trumbull, and Richard Vietor. "Commonwealth Fusion Systems: Born at Scale." Harvard Business School Case 825-061, August 2024. (Revised November 2024.)
      • March 2024
      • Case

      Fit for 55: Europe at a Climate Crossroads?

      By: Laura Jakli, Jonas Meckling and J. Gunnar Trumbull
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      Jakli, Laura, Jonas Meckling, and J. Gunnar Trumbull. "Fit for 55: Europe at a Climate Crossroads?" Harvard Business School Case 724-036, March 2024.
      • March 2024 (Revised July 2024)
      • Case

      H2 Green Steel: A Clean-Tech Triple Play?

      By: Debora L. Spar, Gunnar Trumbull, Henry Tao and Julia Comeau
      At the end of 2023, the Swedish startup H2 Green Steel was mid-way through construction on an integrated steel plant in Northern Sweden that would use abundant local hydro power to create Europe’s first commercial-scale green steel. Their goal was to help European... View Details
      Keywords: Steel; Green Business; Green Technology; Factories, Labs, and Plants; Business Startups; Climate Change; Technological Innovation; Growth and Development Strategy; Renewable Energy; Steel Industry; Sweden
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      Spar, Debora L., Gunnar Trumbull, Henry Tao, and Julia Comeau. "H2 Green Steel: A Clean-Tech Triple Play?" Harvard Business School Case 324-101, March 2024. (Revised July 2024.)
      • March 2024 (Revised November 2024)
      • Case

      Kawasaki Heavy Industries Bets on Clean Hydrogen

      By: Gunnar Trumbull, Nobuo Sato and Akiko Kanno
      Kawasaki Heavy Industries (KHI), an engineering manufacturer headquartered in Japan, was aiming to scale up its hydrogen production and establish a global hydrogen supply chain. The initiative was in line with Japan's energy strategy, as the country seeks to transition... View Details
      Keywords: Renewable Energy; Demand and Consumers; Competition; Growth and Development Strategy; Infrastructure; Supply Chain; Manufacturing Industry; Energy Industry
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      Trumbull, Gunnar, Nobuo Sato, and Akiko Kanno. "Kawasaki Heavy Industries Bets on Clean Hydrogen." Harvard Business School Case 724-035, March 2024. (Revised November 2024.)
      • February 2024
      • Supplement

      ReNew (B): A New Direction

      By: Gunnar Trumbull and Malini Sen
      The global renewables sector was in a slump, but the Indian market was booming. India’s largest renewable electricity generator, ReNew, faced a dilemma: it traded on the Nasdaq in New York, but saw huge opportunity in the Indian market. In response, CEO Sumant Sinha... View Details
      Keywords: Energy Generation; Renewable Energy; Entrepreneurship; Forecasting and Prediction; Trends; Transformation; Private Ownership; Environmental Sustainability; Mission and Purpose; Expansion; Market Entry and Exit; Energy Industry; Asia; India
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      Trumbull, Gunnar, and Malini Sen. "ReNew (B): A New Direction." Harvard Business School Supplement 724-032, February 2024.
      • January 2024
      • Background Note

      The Carbon Age

      By: Gunnar Trumbull
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      Trumbull, Gunnar. "The Carbon Age." Harvard Business School Background Note 724-025, January 2024.
      • December 2023
      • Case

      Raízen: Helping to Decarbonize the World?

      By: Gunnar Trumbull, Pedro Levindo, Daniel Tong and Rafaella Mazza
      Raízen, the world’s largest sugar and ethanol producer, strived to find ways to expand the second-generation ethanol (E2G) market, which it pioneered. The company planned to invest R$24 billion (around $4.6 billion) in 20 production plants, with a total capacity to... View Details
      Keywords: Plant-Based Agribusiness; Factories, Labs, and Plants; Renewable Energy; Environmental Sustainability; Production; Expansion; Agriculture and Agribusiness Industry; Energy Industry; Brazil; Europe; North America; United States; Argentina; Paraguay
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      Trumbull, Gunnar, Pedro Levindo, Daniel Tong, and Rafaella Mazza. "Raízen: Helping to Decarbonize the World?" Harvard Business School Case 724-014, December 2023.
      • February 2023
      • Case

      Germany, Europe, and Green Industrial Revolution

      By: Gunnar Trumbull and Jonathan Schlefer
      In 2023, Germany was racing to master yet another industrial revolution: this time in green technology. Could it transform its manufacturing and industry in time to sustain internationally competitiveness, especially with the United States and China; reach carbon... View Details
      Keywords: Economy; Economic Growth; Success; Leadership; Problems and Challenges; Germany
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      Trumbull, Gunnar, and Jonathan Schlefer. "Germany, Europe, and Green Industrial Revolution." Harvard Business School Case 723-043, February 2023.
      • May 2022
      • Case

      Cultivo: Investing in Natural Capital

      By: Gunnar Trumbull
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      Trumbull, Gunnar. "Cultivo: Investing in Natural Capital." Harvard Business School Case 722-055, May 2022.
      • April 2022 (Revised May 2023)
      • Case

      Colossal: Bringing Back the Woolly Mammoth

      By: Gunnar Trumbull
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      Trumbull, Gunnar. "Colossal: Bringing Back the Woolly Mammoth." Harvard Business School Case 722-056, April 2022. (Revised May 2023.)
      • March 2022 (Revised February 2024)
      • Case

      Climate Change & the Biden Administration

      By: Gunnar Trumbull and James Barnett
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      Trumbull, Gunnar, and James Barnett. "Climate Change & the Biden Administration." Harvard Business School Case 722-030, March 2022. (Revised February 2024.)
      • January 2022 (Revised February 2022)
      • Case

      Envision Group

      By: Gunnar Trumbull, Bonnie Yining Cao and Dawn H. Lau
      Based in China, Envision was one of the world’s leading Greentech companies. Chief Executive Officer Lei Zhang had set the goal of achieving carbon neutrality across the company’s global operations and supply chain by 2022 and 2028 respectively. As part of its... View Details
      Keywords: Green Technology; Climate Change; Emerging Markets; Information Technology; Strategy; Management; Renewable Energy; Energy Policy; Environmental Sustainability; Manufacturing Industry; Auto Industry; Green Technology Industry; Battery Industry; China; United States; Japan; United Kingdom; France
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      Trumbull, Gunnar, Bonnie Yining Cao, and Dawn H. Lau. "Envision Group." Harvard Business School Case 722-045, January 2022. (Revised February 2022.)
      • January 2022 (Revised January 2024)
      • Case

      ReNew Power: Leading the Energy Transition in India

      By: Gunnar Trumbull and Malini Sen
      Founder-CEO of one of India’s largest clean energy companies, ReNew Power, which develops, builds, and operates utility-scale wind and solar energy projects, has to decide the way forward for the company as the country and the world stand poised at the cusp of an... View Details
      Keywords: Energy Generation; Renewable Energy; Energy Sources; Entrepreneurship; Private Equity; Initial Public Offering; Forecasting and Prediction; Trends; Transformation; Private Ownership; Environmental Sustainability; Energy Industry; India; Asia
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      Trumbull, Gunnar, and Malini Sen. "ReNew Power: Leading the Energy Transition in India." Harvard Business School Case 722-028, January 2022. (Revised January 2024.)
      • January 2022
      • Technical Note

      Accounting for Climate Change

      By: J. Gunnar Trumbull
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      Trumbull, J. Gunnar. "Accounting for Climate Change." Harvard Business School Technical Note 722-046, January 2022.
      • September 2019
      • Teaching Note

      The German Export Engine

      By: J. Gunnar Trumbull
      Teaching Note for HBS No. 715-045. View Details
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      Trumbull, J. Gunnar. "The German Export Engine." Harvard Business School Teaching Note 720-014, September 2019.
      • January 2019 (Revised July 2022)
      • Case

      Jain Irrigation Systems Limited: Continuing a Legacy

      By: Forest Reinhardt, Gunnar Trumbull and Mahima Rao-Kachroo
      Founded in 1963 by Bhavarlal Jain (Bhau), who believed in “providing solutions for every problem,” Jain Irrigation in 2018 had a global footprint and $1.1 billion in revenue. Bhau had insisted that his business add value to farmers' lives and promote sustainable... View Details
      Keywords: Family Business; Mission and Purpose; Corporate Social Responsibility and Impact; Strategic Planning; Problems and Challenges; India
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      Reinhardt, Forest, Gunnar Trumbull, and Mahima Rao-Kachroo. "Jain Irrigation Systems Limited: Continuing a Legacy." Harvard Business School Case 719-044, January 2019. (Revised July 2022.)
      • December 2016 (Revised April 2019)
      • Case

      Rice in Japan

      By: Forest Reinhardt, Gunnar Trumbull, Naoko Jinjo and Mayuka Yamazaki
      Keywords: Agriculture and Agribusiness Industry; Japan
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      Reinhardt, Forest, Gunnar Trumbull, Naoko Jinjo, and Mayuka Yamazaki. "Rice in Japan." Harvard Business School Case 717-032, December 2016. (Revised April 2019.)
      • April 2016 (Revised July 2016)
      • Case

      Managing the European Refugee Crisis

      By: Gunnar J. Trumbull, Elena Corsi and Daniela Beyersdorfer
      In 2016, Europe struggles to cope with one of the largest refugee flows it has ever witnessed. View Details
      Keywords: Migration; European Union; Economy; Immigration; European Union
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      Trumbull, Gunnar J., Elena Corsi, and Daniela Beyersdorfer. "Managing the European Refugee Crisis." Harvard Business School Case 716-076, April 2016. (Revised July 2016.)
      • April 2015 (Revised October 2024)
      • Case

      The German Export Engine

      By: Gunnar Trumbull, Jonathan Schlefer and Sophus A. Reinert
      In fall of 2018, Germany’s chancellor Angela Merkel had logged significant successes. Germany was the largest exporter in the world, had maintained low unemployment through the 2008 financial crisis, and was gradually reforming its welfare state to meet future pension... View Details
      Keywords: Economy; Economic Growth; Success; Leadership; Problems and Challenges; Germany
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      Trumbull, Gunnar, Jonathan Schlefer, and Sophus A. Reinert. "The German Export Engine." Harvard Business School Case 715-045, April 2015. (Revised October 2024.)
      • 2014
      • Book

      Consumer Lending in France and America: Credit and Welfare

      By: Gunnar Trumbull
      Why did America embrace consumer credit over the course of the twentieth century, when most other countries did not? How did American policy makers by the late twentieth century come to believe that more credit would make even poor families better off? This book traces... View Details
      Keywords: Attitudes; Credit; France; United States
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      Trumbull, Gunnar. Consumer Lending in France and America: Credit and Welfare. New York: Cambridge University Press, 2014.
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