]> buy sell This class represents an abstract electricity market Aggregator. An aggregator is a special type of Player which is aggregates small players in other for them to be able to participate in the wholesale electricity markets. 1 1 1 This class represents an electricity market Area, such as Portugal or Spain areas in the Iberian market MIBEL. 1 1 buy sell 1 This class represents an electricity market's abstract Bid. 1 1 1 1 1 1 This class represents an electricity market's abstract Bilateral Contract. 1 1 1 1 This class represents an abstract electricity Market, i.e. it may assume instances as MIBEL, EPEX or Nord Pool. This class represents an abstract Market Operator. 1 1 1 This class represents an abstract Market Type. E.g.: day-ahead, intraday, etc. 1 1 1 1 This class represents an abstract Offer. An Offer here is seen as a bid's fraction, i.e. a bid may be defined by one or more fractions. 1 This class represents an abstract electricity markets' Operator. 1 1 This class represents an abstract electricity market Period. A period usually represents an hour, but it can be less depending on the market and market type to consider. 1 This class defines an electricity market abstract Player. A player may be a buyer, a seller, consumer, producer, retailler, aggregator, prosumer, amoung others. 1 1 This class represents an abstract Power, defining it value and unit. 1 1 This class represents an abstract Price, defining it value and unit. 1 1 1 1 1 This class represents an electricity market abstract Session. Each Market Type is composed of one or more market sessions. This class represents an abstract System Operator.