Senior Consultant
Hayden Dahmm

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Hayden Dahmm

Mr. Dahmm joined E3 in 2021 supporting the Climate Pathways and Electrification team. His work has included the GHG assessment of a factory looking to achieve carbon neutrality, a qualitative review of hydrogen policy options for New York State, quantitative analysis to support NYC with its long-term energy planning, and assessments for multiple utilities of how climate actions may impact rates and customer affordability. . He previously worked with the UN Sustainable Development Solutions Network, an organization promoting science-based solutions to sustainability challenges. His work focused on how the global community can better use data and statistics to monitor and improve sustainable development. After graduating from Swarthmore College in 2015 with a BS in Engineering, he traveled to the UK as a Marshall Scholar where he completed an MSc in Sustainable Energy Futures at Imperial College and an MSc in Environmental Policy and Regulation at the London School of Economics. He now works with both public and private sector actors to analyze potential pathways for reaching decarbonization objectives.

Hayden is motivated by a deep concern for the environment, and is particularly interested in the intersection of technology and society. His previous work has focused on how the global community can better use data and statistics to monitor and improve sustainable development.

Hayden is an avid reader and enjoys taking extended walks in Central Park with his guide dog, Fathom.

Education: MSc, Environmental Policy and Regulation, The London School of Economics and Political Science; MSc, Sustainable Energy Futures, Imperial College; BS, Engineering, Swarthmore College


Scenario Analysis to Support the 2023 Annual Report | United States Climate Alliance, 2023

E3 provided scenario analysis to support the US Climate Alliance’s 2023 Annual Report which highlighted the progress Alliance members have already made toward reducing greenhouse gas (GHG) emissions, and using E3’s modeling, detailed multiple scenarios of Alliance-wide GHG emissions through 2050. E3 evaluated Alliance-wide GHG emissions through 2050 using E3’s PATHWAYS model to map out the trajectory of current policies including the Inflation Reduction Act, proposed federal actions, and additional ambitious collective actions for Alliance states or the federal government. These scenarios highlighted the gap between current policies and GHG targets and quantified the impact of incremental measures and actions. E3 also evaluated the benefits and costs of achieving net zero GHG emissions, including health benefits, climate benefits, and direct costs of fuels and clean infrastructure, showcasing net savings through 2050 of decarbonization.

Read the detailed project description.

New York City Long-Term Energy Plan | New York City Mayor’s Office of Climate and Environmental Justice, 2022-2023

E3 led a team completing an inclusive, year-long study to identify the policies and programs needed to achieve the New York City’s decarbonization goals. E3’s analysis involved both examining policies and programs to meet the city’s long-term goals as well as providing specific recommendations for actions to be taken during the current administration. The study included eight research branches focused on the performance and cost of heat pumps in new buildings; the affordability of electrification retrofits in rent-regulated housing; the opportunities for electric school bus managed charging and vehicle-to-grid; the potential for in-city wind energy; a screening of public lands for new clean energy development; an assessment of the electric grid readiness for increasing heat pump and EV charging loads; and an evaluation of how bulk energy storage could reduce reliance on in-city fossil generation. Based on E3’s study, New York City published PowerUp NYC, the city’s first Long-Term Energy Plan, which includes 29 clean energy initiatives focused on the city’s energy grid, its buildings, and its transportation sector. Many aspects of the PowerUp NYC, from research topic selection to recommendations, were developed in collaboration with the public, and with the public’s interest at the forefront of the decision-making process. The recommendations of the LTEP are aligned with long-term energy and equity policy mandates from both the city and state and revolve around the needs of NYC residents.

Read the detailed project description.


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