I suppose the question is, what does a bucket of water cost if it comes from the groundwater or the next mountains/lake and what does it cost if it comes from a multi-million desalination facility… I mean even if the energy is free (which it’s not) the whole plant has to be built, staffed and maintained. And having an expensive factory sit around idle during the night and peak power and just operational from 10am to 3pm isn’t economical and makes the water that comes out of it even more expensive. And regular water is cheap. Even after being carried around by trucks in the worst case.
If it’s too expensive compared to normal water, no-one is going to buy it. And the millions of dollars invested in the desalination plant won’t get a return. And then it’s just throwing money out of the window. It could be cheaper to just discard the exess energy than invest millions into something that doesn’t sell. And then you could throw good money after bad and try to subsidize the effort. But I don’t think it’s viable unless it’s a desert or some other geological factors rule out other water sources.
In other words, green technology is not feasible from an economic standpoint. Did you factor in the effects of global warming or the cost of depleting known waterways/systems?
I mean you also have to factor in the carbon footprint of the concrete that goes into the desalination facory. And producing solar panels also isn’t light on the planet. It’s going to be a complicated equation. But large factories like desalination plants plus the energy also don’t come without consequence for the planet. Even more so if they’re underutilized. I’m not sure if that counts as “green” anymore. The technology is probably neither feasible from an economic standpoint, nor from an ecological one.