But in the heat of the summer, his power bills still top $400 a month. Across the country, electricity prices have jumped more than twice as fast as the overall cost of living in the last year. It’s not just Florida that’s wrestling with high-priced power. Electricity prices have been rising rapidly across the country — thanks to a combination of factors tied to both demand and supply. The Energy Department projects data centers and other commercial customers will use more electricity than households for the first time ever next year.