Who We Are

The International Institute for Energy Systems Integration (iiESI) is a global membership-based organization of leading researchers, educators, and practitioners addressing the technical challenges associated with the integration of multiple energy systems.

Our members' core competencies cross multiple engineering and scientific disciplines associated with the energy infrastructure.

Our Mission

Through knowledge capture, management, and transfer, iiESI will ensure that investments in ESI research and development (R&D) and education are coordinated and optimized to yield the greatest value possible to the global community.

Our Vision

Our vision is a global community of scholars and practitioners from leading institutions coordinating efforts in ESI R&D and education to enable highly integrated, flexible, clean, and efficient energy systems.

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Current Members

EPRI's collaborative, power grid research, development, and demonstration projects address specific, near-term opportunities and long-range strategic challenges. EPRI's research can help mitigate risks and contribute substantially to keeping electricity safe, reliable, efficient, affordable, and environmentally responsible.
For nearly a century, GE's Energy Consulting experts have focused on solving the electric power industry's most pressing challenges—driving the evolution of electric power systems with greater affordability, reliability, and efficiency. Today, GE's Energy Consulting team continues this tradition by providing innovative solutions across the entire spectrum of power generation, delivery, and utilization. With its cross-company resources, GE's Energy Consulting business is able to serve a diverse global client base with a strong local presence.

Imperial College London

KIER is a research institute that strives to positively impact the quality of life for people while improving national wealth—all through their support of national energy policy in terms of technology development. The institute's R&D efforts will lead to technology transfer that can be reflected in successful commercialization.
Situated in Belgium, in the heart of Western Europe, KU Leuven has been a center of learning for nearly six centuries. Today, it is Belgium's largest university and, founded in 1425, one of the oldest and most renowned universities in Europe. As a leading European research university and co-founder of the League of European Research Universities (LERU), KU Leuven offers a wide variety of international master's programs, all supported by high-quality, innovative, interdisciplinary research. In 2016, KU Leuven leads the Reuters Top 100 ranking of Europe's most innovative universities.
NREL advances the science and engineering of energy efficiency, sustainable transportation, and renewable power technologies by providing the knowledge to integrate and optimize energy systems. The Energy Systems Integration Facility, located at NREL, is a U.S. Department of Energy user facility available to the global research community.
The Energy Research Institute @ NTU envisions to be a leading research institute for innovative energy solutions. It distinguishes itself through excellence in basic research, with focus on systems-level research for tropical megacities, integrating research across the university as a whole in the context of the energy challenge, and helping to translate outcomes into industry and practice.
DTU is ranked as one of the top technical universities in Europe. It continues to set new records in number of publications and persistently increases partnerships with industry. DTU researches all areas of energy systems—from production and transport to storage and consumption, placing an emphasis on sustainable energy forms and their integration, which includes a focus on big data analytics, cloud computing, IoT, energy informatics, modeling, forecasting, and control. In October 2015, Reuters ranked DTU first in the Nordic region and seventh in Europe on their list of the Top 100 World's Most Innovative Universities.

iiESI Leadership

Dr. Mark O'Malley is the Director of iiESI and a Professor of Electrical Engineering at University College Dublin (UCD). He is the founding Director of the Electricity Research Centre and Director of the UCD Energy Institute, a multidisciplinary, multi-institutional, industry-supported research activity. Dr. O'Malley is recognized as a world authority on energy systems integration and has authored over 300 academic papers and supervised 22 Ph.D.s to completion. He is a member of the European Academy of Sciences Advisory Council Energy Panel, a Fellow of the Institute of Electrical and Electronic Engineers (IEEE), and a Member of the Royal Irish Academy. He graduated with a B.E. and Ph.D. in Electrical Engineering from the National University of Ireland.
Dr. Bryan Hannegan is the Associate Director for Energy Systems Integration at the National Renewable Energy Laboratory, the U.S. Department of Energy's primary national laboratory for energy efficiency and renewable energy research and development. In this role, he leads NREL's global initiative to optimize links between electricity, fuel, thermal, water, and communication networks in order to enable a more sustainable society. Prior to joining NREL, Dr. Hannegan held several research leadership positions in fossil energy, renewable energy, and environmental science and technology at the Electric Power Research Institute, the non-profit R&D arm of the electric power industry. Earlier in his career, Dr. Hannegan served as a senior energy advisor to President George W. Bush in staff positions for the Council on Environmental Quality and the National Economic Council, and he has also served as a staff scientist for the U.S. Senate Committee on Energy and Natural Resources. Dr. Hannegan is a former elected Director of the Coastside County Water District, and he serves on numerous professional societies and commissions, including the California Council on Science and Technology, the American Meteorological Society's Board on Global Strategies, and the International Energy Agency's Renewable Energy Industry Advisory Board. Dr. Hannegan holds a Doctorate in earth system science and a Master of Science in engineering, both from the University of California, Irvine, and he also holds a Bachelor of Science in meteorology from the University of Oklahoma.