The Daniel Guggenheim School of Aerospace Engineering at Georgia Tech

Jonathan Murphy

Jonathan Murphy is a PhD student from Richmond, VA. His research interests include the design of energy systems and selection of energy portfolios, including the use of renewable energy. His personal interests include sustainability and bicycle advocacy and repair.

Research Interests

Jonathan's PhD research is on the selection of energy portfolios that may include diverse portfolio options, including fossil energy, renewable energy, energy storage, energy efficiency, and demand side management. Energy portfolio assessment simulation codes may take a long time to run, and so the number of simulations should be minimized; however, the portfolio space his high-dimensional. The outcomes are highly uncertain, and uncertainty will vary over the portfolio space (the problem is heteroscedastic). Additionally, the decision-maker is faced with competing objectives (ex. emissions reductions, low energy cost) and wishes to reduce risk as well. Jonathan's research seeks to enable the discovery of multi-objective Pareto frontiers in combined objective/risk space with minimal simulation runs.


  • B.S., Aerospace Engineering, 2005, University of Virginia
  • M.S., Aerospace Engineering, 2007, Georgia Institute of Technology



  • Murphy, J., Parikh, R., Van Heest, T., Ender, T., 'A Dynamic Multi-Attribute Approach to Regional Energy Portfolio Selection', 8th Conference on Systems Engineering Research, March 17-19 2010, Hoboken NJ.
  • Ender, T., Murphy, J., Haynes, C., McDermott, T., 'Enabling Collaborative Decision Making: A Process for Integrating Novel Systems Engineering Tools and Methods for Renewable Energy Portfolio Analysis', INCOSE International Symposium, 20-23 July 2009, Singapore.
  • Ender, T., Murphy, J., Zentner, J., 'A Surrogate Modeling Approach to the Design of an On-Grid Hybrid Wind/Fossil Power System with Storage', ASME Energy Sustainability 2009, July 19-23 2009, San Francisco CA.
  • Ender, T., Murphy, J., Haynes, C., 'A Framework for Portfolio Management of Renewable Hybrid Energy Sources', IEEE Energy2030, 17-18 November 2008, Atlanta GA.
  • Murphy, J., Ender, T., Haynes, C., Mavris, D. 'A Surrogate Modeling Based Approach to Renewable Mobile Hybrid Power System Design', ASME International Mechanical Engineering Conference and Exposition, November 2-6 2008, Boston MA.


  • Ender, T., Murphy, J., Haynes C., 'A Framework for Portfolio Management of Renewable Hybrid Energy Sources', IEEE Systems Journal, Vol. 4, No. 3, 2010, pp. 295-302.

Awards and Honors

  • GTRI Robert G. Shackelford Fellowship, 2009 - present