Peter Lilienthal

UL Solutions

  • Peter Lilienthal serves as UL’s global lead for microgrids. He is the original developer of HOMER® software and founded HOMER Energy in 2009. In December 2019, HOMER Energy became part of UL, and is now known as HOMER Energy by UL. He has a Doctoral Degree in Management Science and Engineering from Stanford University.
  • Lilienthal has been active in the field of renewable and distributed energy and energy efficiency since 1978. Before founding HOMER Energy, he was president of Green Island Power, which provided analytical services for renewable and distributed power projects. From 1990-2007 he was senior economist with the International Programs Office at the National Renewable Energy Laboratory.
  • His experience has included project development of distributed power projects, designing and teaching courses at the university level and consulting to industry and regulators. His technical expertise is in utility modeling and the economic and financial analysis of renewable and distributed power projects. He was the lead analyst and one of the creators of NREL’s International and Village Power Programs.

  • UL’s HOMER software has been used by over 250,000 energy practitioners in more than 190 countries.