Demand charge calculator
See what your billed demand costs. Enter the demand and rate shown on your bill to check the charge, with each step of the calculation visible.
Your demand charge
Enter your billed demand and your demand rate; both are printed on the delivery portion of a commercial bill.
An estimate from the figures you enter. Your bill and your utility's tariff are the authoritative source. Voltcheckr LLC is a registered electricity broker (Texas PUCT Broker Registration BR260102), not a utility and not a supplier.
Voltcheckr LLCPUCT-registered broker BR260102
Over 100,000 kWh a year?
What it means
Demand charges at a glance
On a Texas commercial bill the demand charge is billed under the delivery utility's tariff (Oncor, CenterPoint, AEP Texas or TNMP) on the peak kilowatts drawn in any 15-minute interval during the month. Whether and how an account is billed for demand follows its applicable utility tariff and its contract, and how demand and pass-through charges appear in an offer differs by supplier, so ask us and we'll check how each offer treats them. Lowering the peak (staggering equipment start-ups, shifting a large load off the busiest hour) is the lever on the demand figure itself.
Cite as: Voltcheckr LLC, Demand charge calculator, voltcheckr.com/tools/demand-charge-calculator.
Compare offers
See what Texas suppliers offer your business
See your options before you sign. Compare supplier rates and contract terms, with help when you need it.
Live ratesNo signupNo obligation
Reverse Auction
For accounts over 100,000 kWh a year
Need help? Call (469) 708-9311
We set it up with you
Voltcheckr reviews your application and usually contacts you within the hour, 7am–7pm CT, Monday–Saturday, to set up the terms you want.
Suppliers bid head to head
You get each bid by email as it comes in, usually over 4 to 5 business days, and offers tend to improve, most often on the last day.
Pick the winning bid
Voltcheckr goes over that supplier's contract terms with you before you sign.
Need help? Call (469) 708-9311
Customer story
~24%
lower supply rate than the previous tenant's
On the Rocks Italian Bistro
Burleson, Texas · 24-month fixed rate
Why ask suppliers for a price when they can bid for your contract?
Accounts over 100,000 kWh a year can apply for a reverse auction. One account's historical result; savings vary by account and market.
See how the auction worked →How it works
Compare before you commit.
- 01
Start with your business ZIP.
Add your usage and when you need service.
- 02
Put the offers side by side.
Check the rate, contract length and what is included.
- 03
Choose with the terms in view.
Continue online where available, or get help.
Who does what
Why use a broker?
You choose the supplier. Your utility continues delivering power.
How we're paid
No separate fee: suppliers pay us a commission when a contract is signed.
Why use Voltcheckr
Bring your comparison into one place. We help you review available supplier offers, check what each includes and understand the terms before you choose.
How we handle data
We use your bill and usage to prepare your quote, and share them with suppliers only with your authorization. We never sell your data.
Texas focus
Check who serves your address.
Choice follows the service address and the utility named on the bill, never the city name alone.
Renewal Reminder
Custom Rates
Rates priced for your utility, your renewal month and, with a bill, your usage.
Clear Terms
Fixed supply rates, each with its supplier, term and start month. No supplier conditions attached.
Sign Up Online
Pick an emailed rate and sign up on our site with your yearly usage or a recent bill (some plans need the bill). The supplier's contract then comes by email to sign.
Right on Time
Emails start about 90 days before your contract ends, or right away if it is closer, so you can renew before it rolls to a month-to-month rate that can cost more.
Rates in your inbox before you renew. Stop anytime.
Broker disclosure: Voltcheckr LLC is an independent energy broker (Texas PUCT Broker Registration BR260102), not an energy supplier, with no affiliated supplier. The supplier you choose pays us a referral commission, and you contract directly with that supplier. You can stop using Voltcheckr at any time at no cost. By continuing you acknowledge our broker disclosures.
Demand charge questions
What is a demand charge?
A charge on the highest average power your meter drew over any 15-minute interval in the billing month, priced per kilowatt by your delivery utility. It rewards a steady load and penalizes a short spike, even one that lasted a quarter of an hour.
Does switching suppliers lower a demand charge?
Not by itself. The demand charge is billed under the delivery utility's tariff on the peak your meter records, so the supply contract's price per kilowatt-hour is a separate decision. How demand and pass-through charges appear in an offer differs by supplier, so ask us and we'll check how each offer treats them; lowering the peak changes the demand figure.
Where do I find billed demand on my bill?
Look for a line labeled billed demand, kW demand or a similar term on the delivery or utility portion of the bill, usually next to a rate per kW. If the bill shows only kilowatt-hours, the account may be too small to carry a demand charge at all.
See your options before you sign.
Compare available rates and terms. Start with your business ZIP.
Compare business rates →Need help? Call (469) 708-9311
Voltcheckr LLC · PUCT Broker Registration BR260102 · No separate fee, the supplier pays us