Abraham Ellis

Renewable and Distributed Systems Integration Program Manager

Ph: 505.844.7717

Joshua Stein

PV Performance Lead

Ph: 505.845.0936

Joshua Stein is a distinguished member of the technical staff at Sandia National Laboratories, and works in the area of PV and grid integration. He currently develops and validates models of solar irradiance, PV system performance, reliability, and PV interactions with the grid. Joshua leads the PV Performance Modeling Collaborative at Sandia and is a member of the IEA PVPS Task 13 Working Group on PV performance and reliability.  He has a PhD from the University of California, Santa Cruz in Earth Sciences.

Olga Lavrora

Systems Reliability, Manufacturing, and Diagnostics

Ph: 505-845-3166

Olga Lavrova is a principal member of technical staff at Sandia National Laboratories, Photovoltaics and Distributed Systems Department. Olga has performed groundbreaking work in power electronics, sensors and materials for grid applications. Currently, she leads a number of projects overseeing lifetime, reliability and survivability of traditional and renewable energy sources at SNL. Previously, she was Professor at the Electrical and Computer Engineering Department at the University of New Mexico. Dr. Lavrova has been a PI on multiple DOE- and NSF-funded grants concentrating on fundamental semiconductor materials and devices operation, as well as their cost-effective, economical and practical deployment and grid integration. Dr. Lavrova has authored and co-authored more than 50 peer-reviewed publications and 6 US patents.

Jay Johnson

Smart Grid Integration

Ph: 505.284.9586

Jay Johnson is a senior member of technical staff and leads a number of multidisciplinary, international renewable energy research projects including the coordination of advanced distributed energy resource (DER) interoperability testing in the United States, Europe, and Asia through the Smart Grid International Research Facility Network (SIRFN). Previously, he led the US-Japan collaborative research project on utility-scale PV-smoothing controls using a gas genset and battery at the Mesa del Sol Aperture Center and PNM Prosperity Site. Jay spearheads a laboratory directed research and development project on Virtual Power Plants to provide ancillary services and an internal capabilities development project focused on power system and DER cyber security. Jay Johnson received a B.S. in mechanical engineering from the University of Missouri-Rolla and an M.S. in mechanical engineering from the Georgia Institute of Technology.

Jeff Klise

Soft Costs Lead

Geoff Klise is a principal member of the technical staff at Sandia National Laboratories. Geoff participates in multiple efforts to improve models, data collection and analysis techniques to better understand and represent PV system reliability. He was instrumental in bringing the PV Value® tool to market and has led research efforts for over 6 years on ways PV can impact real estate market value. Geoff is currently an associate editor for the ASME Journal of Solar Energy Engineering. He has a Master’s degree from the University of New Mexico.

Jason Neely

Power Electronics and Controls

Ph: 505.845.7677

Jason C. Neely is a researcher at Sandia and has been focusing on power electronics and power electronic converter systems, including microgrid systems, grid integration of renewable energy and energy storage, military power systems, and circuit design for wide bandgap devices since 2010. Previously, he worked in the Intelligent Systems & Robotics Center from 2001-2007. He received his PhD in Electrical and Computer Engineering at Purdue for development of new control techniques for power electronics, and earned his B.S. & M.S. degrees in electrical engineering from the University of Missouri-Rolla.

Robert Broderick

Utility Distribution Systems Analysis

Ph: 505.366.1120

Robert Broderick is a principal member of technical staff and has led Sandia’s Distribution Grid Integration Program since 2012, a program that has produced leading research on the grid integration of distributed energy resources (DER). Robert’s primary research focus is to remove barriers to greater integration of distributed energy resources into the electricity grid by investigating grid impact simulation and modeling including quasi static time series analysis, hosting capacity analysis, regulatory rules and standards, and resiliency. Prior to working for Sandia, Robert worked as a consultant for TRC Engineers, Inc.  focused on solving problems for PV project developers and performing comprehensive grid integration studies for utility clients. Robert worked at PNM (largest IOU utility in New Mexico) as the manager of renewables and developed and managed the successful customer-side PV program, which is expected to achieve over 20 MW of new PV installations in PNM’s service territory. Robert also worked as a senior power engineer in PNM’s Distribution Planning Department and Customer Generation Department. Robert took a lead role in writing New Mexico’s new interconnection standard utilizing industry best practices and IEEE 1547. Robert is a Professional Electrical Engineer and received a master’s degree in power systems engineering from New Mexico State University and a B.A. in Physics from University of Colorado at Boulder.

Sig Gonzalez


Ph: 505.845.8942

Sigifredo Gonzalez is a principal member of the technical staff at Sandia National Laboratories, and works in the area of utility interconnection standards and grid integration. He currently a working group member of IEEE 1547 full revision and a chair for the revision to IEEE 1547.1 section 5.7 Unintentional Islanding test procedure. Concentrating efforts include laboratory evaluations of electrical power system support function developments in prototype inverters, PV system performance assessments, PV system NEC code compliance and reliability, and PV system  interoperability assessments for communication implementation of advanced inverter functions.  Sigifredo directs laboratory assessments of PV inverter at the distributed energy technologies laboratory (DETL) at Sandia. He has a master’s degree in electrical engineering from New Mexico State University in Las Cruces, New Mexico.

Bruce King

Materials & Fabrication Lead

Bruce King is a distinguished member of the technical staff at Sandia National Laboratories.  His current research interests include PV module and system characterization methods, PV performance models and reliability.  He has served as Technical Director of the Photovoltaics Systems Evaluation Lab (PSEL) since 2011 and is Capability Lead for Field Deployment for the DuraMat consortium.  He has a PhD in Materials Science and Engineering from the University of Michigan.