Electric rate structure defines how utilities calculate charges based on consumption, time of use, demand levels, and other billing factors. These frameworks determine whether customers face flat rates, tiered pricing, time-of-use (TOU) schedules, or demand-based charges. Rate structures directly impact HVAC operating costs and solar system economics.
Technical Details
Common structures include residential, commercial, and industrial classifications with varying complexity. Residential rates average $0.14 per kWh nationally but range from $0.10 to $0.25 depending on location and fuel mix. Commercial and industrial rates often include demand charges ranging from $5-20 per kilowatt of peak demand monthly.
Practical Significance
Understanding your rate structure is essential for evaluating energy efficiency improvements and renewable energy investments. Time-of-use rates reward shifting HVAC operation to off-peak hours, potentially reducing bills 10-25%. Solar installations prove most valuable under tiered or TOU structures where they offset expensive peak-use consumption, accelerating payback periods to 6-8 years rather than 10-12 years.