Pull up your last commercial electric bill. Be honest: can you explain every line on it? Most people who run businesses can't — and we don't say that as an insult. Commercial utility bills are genuinely hard to read. They mix two different companies' charges onto one page, bury the rate that actually matters in fine print, and use terms like "ratchet" and "rider" and "CT multiplier" that nobody defines anywhere on the document.

Here's the problem with that. If you can't read the bill, you can't tell when it's wrong. And it's wrong more often than you'd think. We audit hundreds of commercial bills a year, and we find errors or overcharges on a meaningful share of them — sometimes a few dollars, sometimes tens of thousands. The only way to catch those is to understand what you're looking at.

This is a plain-English walkthrough of a commercial electric bill, line by line, followed by the specific overcharges we look for when we run a utility bill audit. By the end you'll be able to read your own bill — and spot the things that should make you call someone.

Why This Matters

Your electric bill is probably one of your top operating expenses, and it's almost certainly the one you scrutinize least. Rent gets negotiated. Insurance gets shopped. The electric bill just gets paid, every month, on autopay, because it looks official and complicated and nobody on staff has time to argue with the utility.

That's exactly why errors persist. A wrong rate class or a stuck demand ratchet can sit on a bill for years because no one is looking. Utilities aren't malicious — they process millions of accounts — but they also have no incentive to call and tell you they've been overcharging. That part is on you, or on whoever advises you.

The Two Halves: Supply vs. Delivery

The single most important thing to understand about a commercial electricity bill breakdown is that it's really two bills stapled together.

• Supply (also called generation or energy). This is the cost of the actual electricity — the electrons. In deregulated states, you can buy this from a competitive supplier at a negotiated rate. This is the part a broker or advisor can shop for you, and it's usually the largest controllable piece of the bill.
• Delivery (also called distribution or transmission). This is the cost of moving electricity over the poles and wires to your building. It's charged by your local utility and is regulated — you can't shop it, and it's the same regardless of who supplies your power.

On a single bill from the utility, these two sections often appear stacked on top of each other, sometimes pages apart. On separate bills (common in deregulated markets), supply comes from your retail supplier and delivery comes from the utility. Either way, the rule holds: supply is shoppable, delivery is not. When someone promises to "lower your whole bill," they're either confused or selling something — nobody negotiates the delivery side down.

kWh vs. kW: Energy vs. Demand

The second thing to internalize is the difference between two units that look almost identical and mean completely different things.

kWh (kilowatt-hours) measures energy — how much electricity you used over the month. Run a 100-watt bulb for 10 hours and you've used 1 kWh. Multiply across a facility and that's your consumption.

kW (kilowatts) measures demand — how fast you pulled electricity at your single peak moment in the cycle, usually the highest 15-minute interval. It's not about total use. It's about your worst spike.

Think of a highway. kWh is the tolls you pay per mile driven. kW is what the highway department charged to build enough lanes for your rush hour — even if that rush hour lasted 15 minutes once. You pay for both, and on most commercial bills the demand side is far bigger than people expect.

The Major Line Items, Explained

Here's what you'll actually find on a typical commercial bill, roughly top to bottom:

• Energy charge (kWh × rate). Your total consumption times the supply rate. On a competitive supply contract, this rate is fixed or indexed per your agreement. This is the number you negotiated — or should have.
• Demand charge (kW × rate). Your peak demand times a $/kW rate, typically $3 to $25+ per kW depending on tariff. On many commercial bills this is 30% to 50% of the total. It's also the most controllable through operational changes.
• Demand ratchet. Some tariffs don't bill this month's peak — they bill a percentage of your highest peak over the last 11 or 12 months. A single bad hour in August can inflate your demand charge through the following July. Not a typo. That's how ratchets work.
• Power factor charge. If your facility runs a lot of motors, the utility may bill you for a low power factor — essentially, inefficient use of the current they deliver. Below about 90% or 95% (varies by tariff), penalties kick in. Correctable with capacitor banks, often with a fast payback.
• Capacity charge. In PJM, ISO-NE, and NYISO markets, you pay for the grid's obligation to serve your peak during a handful of grid-wide peak hours per year. It's set once and rides on your bill for a full delivery year. Easy to miss, expensive to ignore.
• Transmission charge. The cost of the high-voltage long-haul system, distinct from local distribution. Often set on a similar peak-hour basis as capacity.
• Distribution / delivery charges. The local poles-and-wires cost, plus customer and metering charges. Regulated, not shoppable.
• Riders and surcharges. A grab-bag of regulatory line items — renewable portfolio standard charges, energy efficiency program fees, stranded cost recovery, storm cost riders, and others. They're usually small individually but add up, and they change with regulatory filings.
• Sales tax. Applied per state and local rules. Worth its own discussion (below), because many businesses pay it when they shouldn't.

The Numbers Hiding in the Fine Print

Beyond the obvious charges, there are three things on a commercial bill that most people never find — and they matter.

The meter multiplier (CT ratio). Large services don't meter the full current directly. They use current transformers (CTs) that scale the reading down, and the meter reading gets multiplied back up by a fixed factor — often something like 40, 80, or 200. If that multiplier is wrong, every single charge on your bill is wrong by that proportion. It's usually printed in small type near the meter data. We've seen multipliers transcribed incorrectly after a meter swap, quietly inflating a bill for years.

Where the supply rate is buried. The rate you actually care about — your price per kWh for supply — is often not stated cleanly. You have to back into it: take the supply portion of the charge and divide by kWh. Do that, then compare it to your contract and to the current market. If they don't match, something's off.

Your contract expiration. Many supplier bills print the contract end date or a renewal notice somewhere on the page, often near the account summary or in a message box. Find it. The most common and expensive bill problem we see is a contract that quietly expired and rolled to a default variable rate — sometimes double the market price (more on that below).

Sales Tax and Exemptions

This one deserves a flag of its own. In many states, electricity used directly in manufacturing, industrial processing, or agriculture is partially or fully exempt from sales tax. The exemption is not automatic. You typically have to file an exemption certificate with the utility, and sometimes commission a predominant-use or utility study to document what share of your usage qualifies.

If you run a manufacturing or processing operation and you're paying full sales tax on your electricity, there's a real chance you're leaving money on the table — and in many states you can recover several years of past overpayments retroactively. We check this on every industrial bill we audit.

Seven Errors to Check For

Now the practical part. When we run a utility bill audit, here's the short list of business electric bill charges we scrutinize first, because these are where the real money hides.

• 1. Meter and multiplier errors. Confirm the CT multiplier matches the meter, and that consumption is in line with prior years. A consumption jump with no operational change is a red flag — failed meter, wrong multiplier, or a transcription error after a swap.
• 2. Wrong rate class or tariff. Utilities have many tariffs, and you're often not on the cheapest one you qualify for. A facility on a small-commercial tariff that has grown into a demand-metered class — or an industrial site that qualifies for a better schedule — can save materially just by switching tariffs. The utility won't move you proactively.
• 3. A demand ratchet you can reset. If you're on a ratcheted tariff, find out what's setting the ratchet. We regularly find ratchets anchored by a one-time event — a generator test, a startup spike — that's been inflating bills for months. Once you know, you can wait it out and keep peaks controlled so it resets to a lower floor.
• 4. Sales tax on exempt usage. Manufacturers, processors, and ag operations paying full sales tax. Often recoverable retroactively. Always worth checking.
• 5. An expired contract reverted to default. The big one. When a supply contract lapses, you don't keep the old rate — you roll onto the utility's default service or the supplier's holdover variable rate, which can be far above market. Find your expiration date and never let a contract drift past it unnoticed.
• 6. Mismatched account vs. meter. At multi-meter sites, charges can get cross-applied — one meter's demand billed to the wrong account, or a closed location still generating charges. Reconcile every active account to a real, operating meter.
• 7. Estimated reads. When the utility can't read the meter, it estimates — and estimates run high as often as low. A string of "estimated" reads (usually flagged with an E or "EST" next to the reading) should be reconciled against an actual read. Errors compound until someone catches them.

Two of these — power factor penalties and incorrect capacity tags — round out the list for industrial sites, but the seven above cover where most overcharges live.

What to Do Next

Start with one bill and one habit. Pull your most recent statement and do four things: identify the supply vs. delivery split, back into your supply rate per kWh, find your contract expiration date, and confirm the meter multiplier looks right. Those four checks alone catch the most expensive mistakes.

Then go wider. Pull 12 months of bills and look for anomalies — a consumption spike with no cause, a demand number that doesn't fit your operation, an estimated read that never got trued up, riders that climbed sharply. Patterns are easier to spot across a year than on a single page.

If you run a facility with meaningful demand charges, a manufacturing process, or multiple sites, the math justifies a professional set of eyes. A proper utility bill audit costs you nothing if it's done right — a good advisor is paid by finding what you're overpaying, not by adding to it. The bill is complicated by design. You don't have to decode all of it yourself. You just have to know enough to know when something's wrong, and then get it checked.