I mean if they HAVE to have one, an easy choice is cauliflower. It's a neutral tasting vegetable that can be turned into mashed paste or other forms. It already finds itself in several recipes and uses.
Other than that, I wish more places in the world did fried zucchini
we're basically hoping the massive push to batteries/Solar by both China and the U.S is successful in the next decade as they are the countries with the highest KW/h usage to lay a gameplan to get neighboring countries to do the same if it proves to be fruitful.