International Journal of Emerging Electric Power Systems Volume 8, Issue 2 2007 Article 7 Distributed Generation Capacity Evaluation Using Combined Genetic Algorithm and OPF Gareth P. Harrison * Antonio Piccolo † Pierluigi Siano ‡ A. Robin Wallace ** * University of Edinburgh, Gareth.Harrison@ed.ac.uk † University of Salerno, piccolo@unisa.it ‡ University of Salerno, psiano@unisa.it ** University of Edinburgh, robin.wallace@ed.ac.uk Copyright c 2007 The Berkeley Electronic Press. All rights reserved.