Hydroelectric Development on Umbata Falls

Scenic Flow Adaptive Management Plan

Impacts of Scenic Flow Options

The chart below illustrates the effect of the various flow options on project revenue over the duration of the Renewable Energy Supply (RES) contract (20 year period). The chart extends the predictions for each option to the end of the RES contract. The increased flow options have a significant adverse effect on project revenues (+$4 million decrease in revenue for the 12 m3/s option, and +$10 million decrease in revenue for the 24 m3/s option). Conversely, the other options all provide from $2-3 million additional revenue over the course of the project. The variable flow timing option provides the greatest scenic flow experience while also providing a significant amount of additional revenue over the course of the RES contract.

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Umbata Hydroelectric Project
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