The cost of building transmission for expensive wind power in Texas is coming in nearly 40 percent higher than initially promised. Instead of $4.9 billion, as estimated in 2008, the transmission lines are now expected to cost $6.8 billion, according to a report prepared by the RS&H infrastructure consulting firm for the Texas Public Utility Commission. This amounts to approximately $800 per household in the state, or at least $5 per month per ratepayer.

Cost Gaming

The report states several factors caused the initial underestimate of transmission line construction costs. For example, the initial estimate assumed transmission lines would be built in direct, straight lines from point to point. However, the new report notes transmission lines must often follow roads, fences, terrain features, or property lines instead of direct lines between two connecting points.

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