OP probably doesn't. This is something I find odd about replies to stuff like this.
Hey guys, got 30w! Should be plenty.
Omg no you need 50kW to run a desalination plant.
But I have a fresh water spring next to me?
Yeah but I live next to the dead sea.
Obviously discussing different use cases and needs is cool, but some seem to try and apply requirements to others when it doesn't really apply to them.