evaluating individual market power in electricity markets via agent based simulation derek w bunn decision science department london business school sussex place regent s park nw1 4sa uk email dbunn edu tel 44 0 207 262 5050 fernando oliveira 1 abstract we use a coordination game to analyse the possibility of abuse competitive context this was real application england and wales as part competition commission inquiry into whether two particular generators could profitably influence wholesale prices research contributions paper are both areas design policy issues for methodological large industry wide evolutionary models keywords bertrand 2 introduction with widespread restructuring industries moderating has become persistent issue various regulatory agencies that have been appointed manage these new number plausible reasons including preserving security supply or enhancing privatisation returns