Research Interests

My research interests lie at the intersection of optimization, modeling, uncertainty, and computer science. I am interested in the modeling and optimization of complex problems related with energy systems, chemical engineering, and oil industries. Target applications include integration, planning and scheduling of renewable energy systems, process synthesis, planning and scheduling of chemical engineering systems, and path planning of autonomous under-water   vehicles. Development of mathematical programming methodologies, namely combinatorial optimization models, continuous optimization models, deterministic global optimization solution approaches, optimization under uncertainty models, and decomposition algorithms to solve large-scale problems.
Keywords: Optimization, stochastic programming, robust optimization, global optimization, Process Systems Engineering, energy systems, renewable energy, MILP, MINLP, NLP, scheduling, planning, uncertainty, risk management.

Selected Publications

  • Risk-averse formulations and methods for a virtual power plant
    R.M. Lima, A.J. Conejo, S. Langodan, I. Hoteit, O.M. Knio
    Computers and Operations Research, v93, p350-373, (2018)
  • On the solution of nonconvex cardinality Boolean quadratic programming problems: a computational study
    R.M. Lima, I.E. Grossman
    Computational Optimization and Applications, 66(1):1-37, (2017)
  • Symmetry breaking in MILP formulations for Unit Commitment problems
    R.M. Lima, A.Q. Novais
    Computers & Chemical Engineering, 85:162-176, (2016)
  • On the relation between flexibility analysis and robust optimization for linear systems
    Q. Zhang, I.E. Grossman, R.M. Lima
    AIChE Journal, 62(9):3109-3123, (2016)
  • Weekly self-scheduling, forward contracting, and pool involvement for an electricity producer. An adaptive robust o...
    Lima, R. M., Novais, A. Q., Conejo, A. J.
    European Journal of Operational Research, 240 (2), 457-475, (2015)

Education Profile

  • PhD, Chemical Engineering, Faculty of Engineering​  University of Porto, Portugal 
  • Diploma of Chemical Engineering (5 years degree), Faculty of Engineering University of Porto, Portugal   

Professional Profile

  • October 2014 - Present: ​​​Research Scientist​, King Abdullah University of Science and Technology.
  • December 2011 - October 2014: Marie Curie fellow, National Laboratory of Energy and Geology, Portugal.
  • August 2008 - August 2011: Invited researcher, Glass Business and Discovery Center, PPG Industries, USA.
  • June 2006 - August 2011: Postdoctoral fellow, Department of Chemical Engineering, Carnegie Mellon University, USA.

Scientific and Professional Memberships

  • ​Member of the Portuguese Association of Engineers, INFORMS member​


  • Marie Curie Fellowship – DFRH/WIIA/67/2011, Welcome II Programme, co-funded by the Portuguese "Fundacao para a Ciencia e a Tecnologia" (FCT) and the Marie Curie Action Cofund, under the People Programme of the European Commission’s 7th Research Framework Programme.​
  • Post-doc fellowship – SFRH/BPD/26115/2005, funded by the Portuguese "Fundacao para a Ciencia e a Tecnologia" (FCT). ​   
  • PhD fellowship - PRAXIS XXI/21481/99, funded by the Portuguese "Fundacao para a Ciencia e a Tecnologia" (FCT). ​ 

KAUST Affiliations

​Extreme Computing Research Center(ECRC)