Which option is NOT a way to reduce energy costs?

Using appliances with higher power ratings typically leads to increased energy consumption, which would result in higher energy costs rather than a reduction. Appliances with higher power ratings consume more electricity when in use, negating the goal of lowering energy expenses. The other options, such as using fewer appliances, operating appliances for fewer hours, and improving house insulation, are effective strategies for reducing energy consumption and subsequently lowering energy costs. Fewer appliances reduce the total demand for energy, using appliances for fewer hours limits their overall usage and hence their energy draw, and better insulation helps maintain temperature, reducing the need for heating or cooling, all contributing to lower energy expenses.