The countries and territories burdened with the highest electricity costs in the world are typically remote island jurisdictions—such as Bermuda or the Cayman Islands—that lack domestic fossil fuel reserves or large land areas for utility-scale renewable arrays, forcing them to rely almost exclusively on expensive imported diesel and fuel oil. Among larger industrialized economies, European nations like Germany, Ireland, and Denmark frequently record the highest retail electricity rates due to high energy taxes, complex infrastructure grid fees, and heavy reliance on imported gas.