The latter one is settling imbalance electricity by ex post price, which can stimulate units to comply dispatching order, but calculated complex and difficult to understand.

事后电价结算机制采用事后电价结算不平衡电量，事后电价可激励机组按照调度指令出力，但事后电价计算复杂、不易理解。

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Some leaders have urged the meeting to begin the process of launching a new global agreement to stimulate prosperity, similar to the Bretton Woods agreement in 1944 that created the post-war system of fixed exchange rates and established the IMF and the World Bank.

BBC: Q&A: The G20 summit