Right, coz the technology, which exists and is deployed, is being refined before being commercialized at scale ready for the future mass market opportunities that are, as I mentioned, yet to materialize.
>Sidestepping the incorrect use of "rhetorical", I do wonder what it is about facts and relevant questions that get under the skin of some people?
I found it kind of funny actually. The number and nature of questions suggested a high level of ignorance (e.g. this easily googled one) that was coupled with a overtly arrogant attitude. Hoisted on your own petard so to speak ;)
I can't be bothered to answer questions from somebody who uses a deluge of rhetorical questions to argue a covert or overt anti-environmental position in bad faith though. One google to prove you 100% wrong about is sufficient.
Pro tip: try to avoid histrionics about "what to do when the sun doesnt shine and the wind doesnt blow" in future if you want to sound less like a coal lobby pamphlet from 2012 ;)