The commodity charge on your utility bill is the cost of the raw energy you actually consumed during the billing period: the electricity, natural gas, or water itself, priced before anything is added for moving it to your home. It’s listed separately from delivery fees, taxes, and fixed service charges, and it’s usually the line that bounces around the most from month to month because it tracks wholesale energy markets, weather, and global supply.
What It’s Called on Your Bill
The label varies by utility. You might see “supply charge,” “generation charge,” “energy charge,” or just “commodity.” They all describe the same thing: the price of the energy product before anyone moves it through wires or pipes to your meter.
On an electricity bill, this charge pays whoever generated the power, whether that generation came from natural gas turbines, solar panels, nuclear reactors, or another source. Your local utility either produces the power itself or buys it on the wholesale market and passes the cost through to you. On a natural gas bill, the commodity charge covers the gas as extracted and processed, before a local distribution company pumps it through neighborhood pipelines to your furnace or stove. Water bills carry a commodity component too, covering the water supply itself before treatment and distribution costs are layered on.
Electricity and gas commodity charges get the most attention because they move more and account for a larger share of what households spend. The U.S. Energy Information Administration projected the average residential electricity bill at $178 per month during summer 2025, and the commodity portion makes up a significant piece of that total.1U.S. Energy Information Administration. Residential Electricity Bills Could Increase Slightly This Summer
How the Charge Is Calculated
The arithmetic is simple. Your commodity charge equals a price per unit of energy multiplied by how many units you used. The two things to find on your bill are the unit and the rate.
Electricity is measured in kilowatt-hours (kWh). One kWh is the energy a 1,000-watt appliance uses in an hour.2U.S. Energy Information Administration. Use of Electricity Natural gas is billed either in therms (each equal to 100,000 British thermal units) or in units of one hundred cubic feet (Ccf), depending on the utility.3U.S. Energy Information Administration. What Are Ccf, Mcf, Btu, and Therms? How Do I Convert Natural Gas Your meter tracks consumption in these units, and the number appears next to your rate on the bill.
A quick example. As of January 2026, the national average residential electricity price was about 17.5 cents per kWh, including both commodity and delivery components.4U.S. Energy Information Administration. Electricity Monthly Update If the commodity portion of your rate is 10 cents per kWh and you used 900 kWh in a month, the commodity line would be $90. Rates vary a lot by region, so your actual numbers will look different.
What Determines Your Per-Unit Rate
Not every customer pays the same price per unit. The rate depends on the type of plan you’re on and, in some cases, when you use energy.
Fixed-Rate Plans
A fixed-rate plan locks your per-unit commodity price for the length of the contract, typically 6 to 36 months. If wholesale prices spike during a polar vortex or a summer heatwave, you keep paying the locked-in rate. The trade-off is that fixed rates usually carry a slight premium built in to protect the supplier against price swings. They make budgeting easier and tend to be the safer choice if you don’t want surprises.
Variable-Rate Plans
Variable-rate plans tie your commodity price directly to the wholesale market. When market prices drop, you benefit. When they surge, your bill surges too. A rate that sits around 8 cents per kWh in April can jump well past 15 cents during an August heat dome. If you’re on a variable plan, keep a cushion in your budget for high-demand months.
Time-of-Use Rates
A growing number of utilities offer time-of-use pricing, where the per-unit rate changes depending on when you use energy. The price is highest during peak demand hours and lowest overnight or on weekends.5U.S. Energy Information Administration. Glossary – Time-of-Day Pricing Peak windows usually fall in the morning and evening when households are most active. Shifting heavy use to off-peak hours lowers your commodity charge. Running the dishwasher at 10 p.m. instead of 6 p.m. is the kind of small change that adds up across a year.
Tiered (Block) Rates
Some utilities use tiered pricing, where the rate climbs once your consumption crosses certain thresholds. Your first 500 kWh might cost 9 cents each, and everything beyond that might jump to 12 or 14 cents. The structure is designed to encourage conservation. On a tiered plan, the most effective way to lower your commodity charge is to stay within the lowest-priced block.
Commodity Charge vs. Delivery Charge
The two biggest line items on an energy bill are the commodity charge and the delivery charge, and it’s worth knowing which is which because different rules govern each one.
The commodity charge pays for the energy itself. The delivery charge pays for everything it takes to move that energy to your home: power lines, gas pipelines, substations, transformers, meter reading, billing systems, and ongoing infrastructure maintenance. Delivery also includes a regulated rate of return that lets the utility earn a profit on its capital investments. In practice, the delivery line can be as large as or larger than the commodity line, depending on your region.
Delivery is a regulated monopoly. The local utility owns the only wires and pipes serving your address, and your state’s public utility commission sets the rates it can charge for using them. The commodity side can be different. About 13 states plus Washington, D.C., allow residential customers to choose their electricity supplier. In those markets, you can shop for a better commodity rate from a third-party supplier while still paying your local utility for delivery. The bill still arrives from the same utility, but the commodity portion reflects the rate you negotiated with whichever supplier you picked.
If you shop around in a deregulated market, read the contract’s disclosure document before signing. The things that matter are the per-unit rate, the contract length, whether the rate is fixed or variable, and the early termination fee, which varies widely by provider. Many states also give you a short rescission window after signup during which you can cancel without penalty. Your state’s public utility commission website usually lists licensed suppliers and current rates. One thing switching will never change is your delivery charge, since the same local utility maintains the physical infrastructure either way.
Why Your Commodity Charge Moves
Commodity charges follow the wholesale energy market, and that market responds to forces largely outside any one household’s control.
Weather is the biggest short-term driver. A hard cold snap spikes gas demand for heating. A long heatwave pushes electricity use up as air conditioners run nonstop. Both tighten supply and raise wholesale prices, which flow through immediately on a variable-rate plan and get baked into the next round of fixed-rate contracts.
Geopolitical disruptions matter too. When global natural gas or oil supply is constrained by conflict, sanctions, or production cuts, raw commodity costs rise, and the increase eventually reaches residential bills. Domestic events like pipeline outages, power plant retirements, or shifts in the fuel mix used for generation also change producers’ cost structures. The commodity portion of your bill reflects all of this, which is why the same number of kWh can cost noticeably more or less from one season to the next.
If the Charge Is Straining Your Budget
The federal Low Income Home Energy Assistance Program (LIHEAP) provides one-time payments to help eligible households cover heating and cooling costs. Eligibility is based on household income, with states required to set their income threshold between 110% and 150% of the federal poverty guidelines. For 2026, 150% of the poverty line for a family of four is $48,225 in the contiguous 48 states.6LIHEAP Clearinghouse. LIHEAP Income Eligibility for States and Territories Applications go through your state or county social services agency, not through LIHEAP directly.
The most reliable way to lower a commodity charge, regardless of where you live, is to use less energy. The charge is purely consumption-based, so every kWh or therm you avoid is money saved at whatever rate you’re currently paying. Sealing air leaks, adding insulation, using a programmable thermostat, and running high-draw appliances during off-peak hours all reduce the number of units that get multiplied by your rate. In deregulated markets, shopping for a lower rate from a competing supplier is another lever, though how much it saves depends on timing and contract terms.