That may be true but gas cooking isn't available everywhere. So if electricity-based cooking is necessary, induction is likely more efficient than conventional resistance coils.

In our kitchen we have both. Items heat faster with less heating of nonessential surrounding areas vs. standard burners.

My guess is cooking aside solar generation is probably not going to be by itself a sufficient source of household power for the foreseeable future. In any case optimizing use of electric energy requires taking advantage of the best available technologies.