Elizabeth "Liz" Doris's work is primarily in collaborative development and execution of complex research questions related to domestic energy systems. These include balancing multiple interests with varying levels of interest or knowledge in scientific approaches and methodologies, as well as developing interpretation frameworks for increasingly complex scientific results. She has a particular interest in the strengths and limitations of datasets in formulating research questions, methodology choice, and how those factors influence scientific outputs. 

Government and institutional decision-making interactions with the energy system, including island governments and sovereign nations

Tradeoff analysis related to energy system evolution, including workforce and other economic and environmental considerations

Mixed methods approaches to next generation decision informatics

High efficiency government information dissemination program design

Institute Director, Joint Institute Strategic Energy Analysis (retired February 2025) at NLR (2022-2025) 

Senior Advisor on Energy Efficiency and Renewable Energy, U.S. Department of Energy (2021-2022)

Principal Laboratory Program Manager, State, Local, and Tribal Program, NLR (2015–2022)

Senior Project Leader and Technical Manager, NLR (2013–2015)

Senior Project Leader, NLR (2010–2015)

Senior Energy Analyst, NLR (2005–2010)

Researcher, ACEEE (2000–2005)