Compare the daily supply charge, usage rates, discounts, fees and estimated annual cost—not just the total on one bill. Check bills over a similar period and account for seasonal usage, meter reads and any concessions or payment discounts. In some states, use the government-backed Energy Made Easy comparison tool, or compare plans directly through retailers and confirm current rates in writing. The cheapest option depends on your household’s usage, location and eligibility, so check the retailer’s full offer before switching.