Lithium is nonrenewableBecause it's nonrenewable.
renewable energy depends on natural resources that exist on planet Earth in fixed amounts and are very much non-renewable.
The issue of rare earth elements, used in many technologies including solar panels and batteries, is well known. Although these elements are not always as rare as their name suggests, they are finite and not renewable.
https://theconversation.com/lithium...relies-on-such-non-renewable-resources-109630
