Our house is all electric and we average 750 KWH a month. I don't know anyone in our area with a bill that low that doesn't use natural gas on top of it. Our monthly minimum with Entergy appears to be around $45.
The overall natural rate of unemployment will then be affected by changes in the demand or supply in these different segments of the overall labor market and by changes in the composition of the aggregate labor force. Several major changes in recent decades have affected labor supply and demand.
This answer is not to imply that all inequalities are natural, but assuming that the question is about wealth inequality, then the answer would be a yes. Why is wealth inequality a natural phenomenon? Wealth inequality is a natural because every individual must duly be compensated to what value they create. Motivated people drive themselves from rags to riches. Of course some would have more resources than the other, but nobody said it was easy.