For the case of no transmission capacity constraints, an efficient optimization method has already been developed for solving this problem.

在不考虑输电容量约束的情况下，已提出了解决这一问题的计算效率较高的直接优化方法。

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In some areas where the constraints are especially acute like Oregon and Washington State, the lack of spare transmission capacity could force wind farms that have already been built to shut down on a rolling basis in the near future.

FORBES: Transmission Bottlenecks Bad News for Renewable Energy