ABSTRACT

Multipurpose hydropower reservoirs are regularly framed as water security and climate change solutions. Although multipurpose projects can and do deliver a range of water services, ‘win-win’ outcomes are not guaranteed. Emerging water and energy risks are altering the net benefits from operating reservoirs to deliver hydropower generation, water supply, flood control, or other purposes. This paper shows that new hydropower governance approaches are needed to efficiently and fairly reallocate water under risks. We demonstrate that dynamic water reallocation is fundamental to the resilience of multipurpose reservoir systems and examine three potential reforms: periodic relicensing, water tariffs, and hydropower sustainability performance bonds.

摘要

多用途水电水库经常被视为水安全和气候变化解决方案。尽管多用途项目可以而且确实提供一系列水服务，但不能保证“双赢”的结果。新出现的水和能源风险正在改变运营水库以提供水力发电、供水、防洪或其他目的的净收益。本文表明，需要新的水电治理方法来有效和公平地重新分配风险下的水。我们证明了动态水重新分配对于多用途水库系统的复原力至关重要，并研究了三项潜在的改革：定期重新许可、水费和水电可持续性绩效债券。