Is there a special utility rate for commercial EV charging?
Sometimes. EV-specific commercial rate schedules exist in some utility territories and not in others, and where they exist they usually trade a lower, deferred or absent demand charge for a higher price per kilowatt-hour. One number decides whether that trade helps you: your load factor, the ratio of energy consumed to peak power drawn. A low-utilisation depot generally wins on a demand-light schedule and loses on it as utilisation rises, so the switch that saves money this year can cost money in two years.
Updated 2026-08-20
What an EV rate schedule usually is
Whether any of these exists for you is a fact about your utility, not about the industry. We name no program and quote no amount here, because a program figure is only worth publishing attached to a named sponsor and the date somebody read it on the sponsor's own page. What travels nationally is the arithmetic, which is the rest of this article.
The arithmetic that decides it
Write it out and the break-even falls out as a ratio: the demand rate divided by the difference between the two energy rates gives you kilowatt-hours per kilowatt of peak. Divide that by the roughly 730 hours in a month and you have a break-even load factor.
With the illustrative rates below — nine cents a kilowatt-hour plus eighteen dollars a kilowatt on the standard schedule, sixteen cents and no demand charge on the EV schedule — the break-even is 18 divided by 0.07, or about 257 kilowatt-hours per kilowatt of peak. That is a load factor of roughly 35 percent. Below it the EV schedule wins; above it the standard schedule does.
| Monthly kWh | Load factor | Standard schedule | EV schedule | Winner |
|---|---|---|---|---|
| 7,300 | 10% | $2,457 | $1,168 | EV schedule, by a wide margin |
| 14,600 | 20% | $3,114 | $2,336 | EV schedule |
| 25,700 | 35% | $4,113 | $4,112 | Break-even |
| 36,500 | 50% | $5,085 | $5,840 | Standard schedule |
| 54,750 | 75% | $6,728 | $8,760 | Standard schedule, by a wide margin |
Load factor is the number to compute first
A depot early in an electrification program has a low load factor almost by construction: the infrastructure is sized for the fleet you are going to have and serving the fleet you do have. That is exactly the profile a demand-light schedule flatters.
Then vehicles arrive. Energy climbs, the peak stays roughly where the cap holds it, and the load factor rises — which is the mechanism by which a schedule chosen in year one becomes the wrong schedule in year three. Model it at today's fleet, at the fleet in the plan, and at full build, then decide.
The trap: switching restrictions and phase-ins
Many tariffs impose a minimum term on an elective schedule, commonly a year, and limit how often an account may change. That is reasonable regulation and it is also a trap for a load that is growing quickly, because the schedule you elect in the month you commission twenty ports is the schedule you keep while those ports fill up.
A demand-charge holiday deserves the same scepticism. It is deferred cost, not removed cost, and the phase-in is published. Build the bill for the year the relief ends. If the operating model only works during the holiday, the model is the problem, not the tariff.
What else to read in the schedule
| What to look for | Why it matters |
|---|---|
| The definition of billing demand | This is where a ratchet lives, and a ratchet can outlive the schedule you switch away from |
| On-peak hours and their seasons | If your charging window sits inside the on-peak block for part of the year, a time-of-use schedule punishes rather than rewards you |
| Whether demand is split into on-peak and facilities components | A facilities demand charge applies regardless of when the peak occurs, so shifting your window does not touch it |
| Separate metering requirements | Some EV schedules require the charging load on its own meter, which means a second service or a submeter arrangement, with its own construction cost and customer charge |
| Minimum bills and customer charges | A low-utilisation site can find the minimum bill, not the rates, is what it actually pays |
| Power factor provisions | Charging equipment is close to unity, but the rest of the yard may not be, and a penalty clause applies to the whole service |
How to actually get the comparison done
The fifth step is worth doing even when you have done the work yourself, because the utility's analysis will surface schedules you did not know you qualified for. The check on it is the load assumption: an analysis run on last year's consumption tells you which schedule would have been right for a depot you no longer operate.
Incentives are a separate question, and one layer of them is gone
Section 30C terminated for property placed in service after June 30, 2026 and nothing federal replaced it. A capital proposal that shows a federal credit reducing your charging infrastructure cost is quoting a rule that has expired, and it should be corrected before it goes to whoever approves the spend.
What is left is the state layer and the utility layer, and on the utility layer the rate schedule and the incentive program can interact in both directions. Some managed-charging and make-ready programs require enrolment on a particular schedule; occasionally an elective schedule disqualifies you from a program. Ask both desks the same question before electing anything, because they do not always ask each other.
How do I find out whether my utility has an EV rate schedule?
For an investor-owned utility, the tariff book on its own site and the filings with your state commission. For a municipal system or a cooperative, the rate book adopted by the council or board. Search the schedule list for electric vehicle and for charging, then ask your account representative to confirm you have found all of them, because elective schedules are easy to miss.
Is a demand-charge holiday free money?
No, it is deferred. The phase-in schedule is published, and the year the relief ends is the year the operating cost steps up. Model the bill for that year before you build a business case on the years before it.
Can I put the chargers on their own meter?
Sometimes, and some EV schedules require it. A separate meter usually means a second service or a submetering arrangement, each with a construction cost and its own monthly customer charge. Get both numbers before assuming separate metering is the cheaper path; on a small depot the customer charge alone can outweigh the rate saving.
Will switching schedules affect the rest of my site?
Yes, if the whole service moves onto the new schedule. That is the main argument for metering the charging load separately, and the cost of the second service is the main argument against. Which wins depends on how large the non-charging load is relative to the charging load.
Does time-of-use pricing help a charging depot?
Usually yes on the energy line, because overnight is off-peak almost everywhere that has time-of-use, and depot charging is an overnight load. It does not reduce a demand charge unless the tariff has a time-differentiated demand component, which is a separate clause to look for.
What load factor should I aim for?
There is no target; it is a description of your operation, not a goal. What matters is knowing the number, because it is what decides the schedule comparison and it is what makes a low-utilisation depot look expensive per kilowatt-hour in its first year.
- NARUC — directory of state public utility commissions, where investor-owned tariffs and elective schedules are filed
- Green Button Alliance — Download My Data, the interval data the comparison is built from
- US DOE Alternative Fuels Data Center — utility and private incentive search, for programs that interact with rate election
- IRS — Alternative Fuel Vehicle Refueling Property Credit (Section 30C status)
All rates in this article are illustrative round numbers used to show the arithmetic, labelled at the table. No utility, program or amount is named here, because a rebate or rate figure means nothing without knowing whose program it is and when it was checked.
Operating cost is half the picture
The rate schedule decides what the depot costs to run. The installed range decides what it costs to build.