This figure is about the water consumption only. The estimate about the electricity consumption, in that same article, is much higher than that.
The main problem is, in my opinion, that those are just estimates. If we are supposed to accommodate the current and potential future needs, we need real data. Not estimates.
> In the Netherlands, it is estimated that they account for about 0.1 percent of total consumption.
If that's true, what's the problem?