Engineering and logistical concerns add practical limitations to stratospheric aerosol injection strategies
by Miranda Hack, V. Faye McNeill, Dan Steingart, and Gernot Wagner
Writing
My columns, essays, books, as well as research and teaching materials like case studies.
Batterien statt Kraftwerke
Deutschland hat es versäumt, eine konsequente Energiepolitik für die Zukunft zu machen. Stattdessen lähmt eine übervorsichtige Industriepolitik den Wandel. So bleibt man abhängig – von China und den USA.
Getting to Greener Steel
Coalbed methane is an underappreciated problem of global steel production. While cutting methane emissions in the steel supply chain will not produce green steel overnight, it could reduce the sector’s emissions by the equivalent of a billion tons of carbon annually, and at little cost.
Marvel Fusion
Columbia Business School Case
Reenergizing Nuclear Power
Columbia Business School Climate Knowledge Initiative
Early Investment in Decarbonization Can Help Save Trillions in Climate Costs
A net-zero world by 2100 is likely inevitable, but the next decade will be critical for securing a livable future.
Co-production as an Economically Feasible Pathway to Economy-Wide Electrification
by Cody E. Finke, Theodore G. Albertson, Ian McKay, Aravindh Rajan, Eric McFarland, Annelise Gill-Wiehl, Daniel M. Kammen, and Gernot Wagner
China’s Phase-Out of Solar Feed-in Tariffs Is a Sign of a Mature Sector, Not a Waning One
China’s Solar PV installations dropped 85 percent in June after a planned subsidy phase-out. But far from a retreat from renewables, the country's energy policy reforms reflect an increasingly mature and competitive solar industry.
Climate Security Is Energy Security
If political conditions in the United States and elsewhere require a rebranding of technologies formerly known as “climate tech,” so be it. The larger economic, technological, and geopolitical forces propelling everyone toward cleaner energy remain as strong as ever.
How does a multinational become a B Corp?
Financial Times business school teaching case study
America's Clean Energy Transition Will Continue Despite the One Big Beautiful Bill Act
While the OBBBA guts renewable energy incentives, undercuts US manufacturing, and hands a long-term advantage to China, economics will continue to drive clean energy growth.
Trump Wants U.S. Energy Dominance; Solar Is the Way to Get There
Despite the administration’s push for fossil fuels, solar is faster, cheaper, more stable, and increasingly American-made. Here’s why it’s the smartest path to true energy leadership.
Updating Climate Beliefs Based on Latest IPCC Report Points to Increased Willingness to Invest in the Clean Energy Transition
by Mark Freeman, Ben Groom, Frikk Nesje, and Gernot Wagner
Who pays for cutting carbon out of making cement?
Financial Times business school teaching case study
The Green Key to Germany’s Economic Recovery
Just as the broader European economy depends heavily on Germany, the continent's industrial powerhouse, Germany's own economy depends on access to affordable power. With geopolitical and climate conditions requiring an urgent transition to renewables, the task now is to develop a politically viable energy strategy.
Danone: Redefining Corporate Responsibility
Columbia Business School Case
LONGi and the Green Hydrogen Opportunity
Columbia Business School Case
Climate change is both predictable and unpredictable. We don't need certainty to know it's a crisis
The next climate disaster is sure to come. When and where is the question
To help scale climate finance, MDBs must seek replicable leverage
Combining public priorities with private investments is the key to climate action – but speed is of the essence
Allianz Research: “Eight lessons learned from 20 years of ESG investing”
by Ludovic Subran, Arne Holzhausen, Gernot Wagner, and Markus Zimmer
