
There is good news too, though: better, smarter approaches already exist. In the case of pumped storage projects, re-using already-disturbed or abandoned industrial sites makes a lot of sense.
In Wales, for example, the Dinorwig Power Station repurposed an abandoned slate quarry into pumped storage by connecting existing pits and lakes. Because it can respond quickly during demand spikes, Dinorwig has already reduced the need for fossil fuel-powered peaking plants and additional hydropower, such as large dams that fragment rivers and disrupt aquatic life.
Examples like Dinorwig show how energy storage can deliver many of the grid benefits traditionally associated with dams, without fragmenting rivers or flooding ecosystems. That’s a win-win!