Eileen Hannigan



Eileen Hannigan combines analytical expertise, program implementation experience, and an interdisciplinary social science research background to analyze complex data. Drawing on more than 15 years of research and evaluation experience, Eileen excels at translating results into actionable recommendations for energy program planning, design, and continuous improvement. She deploys traditional and experimental qualitative and quantitative research methods to answer critical client questions and is a sought-after expert in areas including behavioral and DR offerings and the smart home. When Eileen is not deftly leading ILLUME teams in studies across the country, you can find her biking or hiking.


Eileen is located in Madison, WI.

Related Resources

Home Energy Report (HER) Savings Literature Review

Our team conducted a thorough review of research addressing the research question: What happens to energy savings when HER recipients no longer receive reports or if they receive reports at a reduced cadence?

Case Study: Hidden in the Basement – Customer Learnings from a DR Study

In a crowded market of new and more efficient appliances, can heat pump water heaters deliver deeper savings and expanded opportunities to leverage DR to support the grid during peak usage? READ THE…

Small Business and Behavioral Energy Efficiency: Dividing Deep into Data to Estimate Statewide Potential

In her BECC 2017 presentation, Eileen Hannigan share an overview of her statewide potential study of the behavioral savings potential—and tactics to reach those savings—with Minnesota small and medium businesses.

Finding Big Potential in Small Businesses: Behavior Change Opportunities and Targeting Approaches from a Statewide Study

Eileen Hannigan’s white paper shares how small businesses, which may have limited capital for large investments, are good candidates for low-cost behavior change conservation.

Statewide Commercial Behavior Segmentation and Potential Study

What is the behavioral intervention potential in Minnesota small businesses? And how do you get them to engage? Anne Dougherty, Eileen Hannigan, and Shannon Kahl answer those questions in this 2017 report.

Matching and VIA: Quasi-Experimental Methods in a World of Imperfect Data

Co-authored by Eileen Hannigan and presented at the 2015 IEPEC conference.

Comparison of Home Retrofit Programs in Wisconsin

Eileen Hannigan co-authored a report comparing Wisconsin weatherization programs for the U.S. Department of Energy, Energy Efficiency & Renewable Energy Building Technologies Program.

Higher Savings Goals and the Rebate/Buy-Down Elephant in the Room: Recognizing When and How to Move On to Market Lift

This white paper on market lift was co-authored by Eileen Hannigan and Rick Winch and presented at the 2010 ACEEE Summer Study.

How Wisconsin’s Focus on Energy Program Used the Power of Promotions to Accelerate the Adoption and Energy Savings of Commercial Lighting

This white paper, co-authored by Eileen Hannigan and presented at the 2010 ACEEE Summer Study proves how promotional tactics encouraged commercial lighting in the Focus on Energy Program.