There are some kinds of trading models in the electricity market, such as contact, day-ahead, real-time, ancillary services and etc.

电力市场中存在着多种交易，如合约交易、日前交易、实时交易和辅助服务交易等。

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There are many kinds of modes in the power market, such as day-ahead market, real-time market, forward contract market and ancillary services market.

电力市场中存在着日前市场、实时市场、合同市场和辅助服务市场等多种交易方式。

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Generator can sell energy in bilateral market and day-ahead auction market including the spot energy market and ancillary service market.

发电商既可以在双边合同市场中进行电力交易，也可以在日前市场的实时电能市场和辅助服务市场进行电力交易。

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