I suppose a Texan could use more energy than today, if desired, and still be "greener" than today, if the energy came from a local renewable source. Let solar panels and especially batteries grow even cheaper.

Same applies to Sri Lanka; it's a very sunny place.

BTW stationary batteries can be bulkier and heavier than lithium, as long as they are cheaper per kWh stored. Such chemistries exist and are actively developed.