Pinto, TiagoVale, ZitaMorais, H.Praça, IsabelRamos, Carlos2013-04-292013-04-292009978-1-4244-4241-61944-9925http://hdl.handle.net/10400.22/1464This paper presents a new architecture for the MASCEM, a multi-agent electricity market simulator. This is implemented in a Prolog which is integrated in the JAVA program by using the LPA Win-Prolog Intelligence Server (IS) provides a DLL interface between Win-Prolog and other applications. This paper mainly focus on the MASCEM ability to provide the means to model and simulate Virtual Power Producers (VPP). VPPs are represented as a coalition of agents, with specific characteristics and goals. VPPs can reinforce the importance of these generation technologies making them valuable in electricity markets.engDistributed generationElectricity marketsIntelligent agents coalitionsVirtual power producers distributedconference object2013-04-1510.1109/PES.2009.5275565