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Read your electric bill, line by line

Every charge rebuilt and traced to the filed tariff, down to the block of eight or nine rider lines most people never read, and the questions the bill cannot answer, named. A ComEd bill is read to the cent today. Any other electric bill is read as far as the reader can take it, and it says so where it cannot.

It must be the PDF from your utility, not a photo or a scan: a picture of a bill has no text in it for us to read. On ComEd.com it is under Billing, then bill history, then download. On a phone, download that same PDF and upload the file.

Read once, never stored, nothing sold. A layout our reader cannot handle is read once by our AI provider and discarded the same way. Privacy notice.

SampleA ComEd business bill built around a real demand line, with the other lines invented so they add up, and not yours.

Commercial ComEd bill / Retail Delivery Service - 0 to 100 kW

What a bill like yours proves

Apr 2, 2026 to Apr 30, 2026 (29 days)

13 lines read, 9 recompute to the cent from their own printed rate, 1 checked against filed records (ComEd filed ratebook).

All 13 charge lines, read, and they add up to $2,497.81

ChargeQuantityRateAmountFiled
Supply
Electricity Supply ChargePrice to compare18,000 kWh$0.07474$1,345.32
Transmission Services ChargePrice to compare18,000 kWh$0.01310$235.80
Delivery
Customer ChargeDoes not move$24.79
Standard Metering ChargeDoes not move$18.44
Distribution Facility ChargeBilled on the peak46.2 kW$12.93/kW$597.37$12.93/kW filed ratebook
IL Electricity Distribution Charge18,000 kWh$0.00128$23.04
Taxes, fees and credits
Environmental Cost Recovery Adj18,000 kWh$0.00009$1.62
Renewable Portfolio Standard18,000 kWh$0.00516$92.88
Zero Emission Standard18,000 kWh$0.00087$15.66
Energy Efficiency Programs18,000 kWh$0.00369$66.42
Energy Transition Assistance18,000 kWh$0.00084$15.12
Municipal Utility Tax$47.35
State Electricity Excise Tax$14.00
Total$2,497.81

Every rate here is filed with the Illinois Commerce Commission and is the same for everyone on this rate. Every line on a ComEd bill, explained.

Every line on your bill was extracted and re-added. The computed total matches the Service Period Total ComEd printed, which is how you know nothing was missed or misread.

How, and the source
How
sum of 13 line items = $2,497.81 = printed total
Source
Your bill, charge details section

What this bill settles

Your demand charge of $597.37 reconciles to the cent

We rebuilt this charge from ComEd's filed ratebook -- the base rate plus every rider and adjustment factor that applies to Small Load at Secondary voltage in 2026 -- and got the same number your bill shows. This is the charge verified against the filed tariff, not an estimate.

How, and the source
How
46.2 kW x $12.93/kW = $597.37 (base $12.50/kW before riders)
Source
ComEd filed ratebook, 2026; reconciled against your bill

You are on ComEd's Small Load delivery class

We did not guess this from your peak kW. We rebuilt every rate class we hold and found the one whose rate matches the rate printed on your bill. We do not hold ComEd's rules for which class a customer belongs in, so this is the class you are billed on, not a check that it is the right one.

How, and the source
How
printed $12.93/kW matches Small Load
Source
ComEd filed ratebook, matched to your bill

Also on this bill

Supply $1,581.12 / Delivery $663.64 / Taxes, fees and credits $253.05

What you paid to buy the electricity, what you paid to have it delivered, and what you paid in taxes, fees and credits. Each section was re-added against its own printed subtotal.

How, and the source
How
Supply: lines sum to $1,581.12 vs printed $1,581.12; Delivery: lines sum to $663.64 vs printed $663.64; Taxes, fees and credits: lines sum to $253.05 vs printed $253.05
Source
Your bill, charge details section

The demand charge is 24% of this bill

$597.37 of your $2,497.81 bill was set by your single highest measured demand in the month, not by how much energy you used.

How, and the source
How
$597.37 / $2,497.81 = 23.9%
Source
Your bill

All-in rate: 13.88 cents per kWh

Everything on the bill divided by the energy you used. This is the number to use when comparing against anything quoted in cents per kWh.

How, and the source
How
$2,497.81 / 18,000 kWh = 13.877 c/kWh
Source
Your bill

What your bill cannot tell you

A monthly statement does not contain the data to answer these.

  1. When did the peak that set your demand charge occur, and how long did it last?

    Your bill prints the billed kW but never says which interval produced it. One 30-minute window set that charge, and the bill does not say which window, what was running, or whether it happened once or every day.

    Interval data: the peak interval is directly identifiable, with its timestamp.

  2. When did you actually use the electricity?

    Your bill resolves your usage to a single monthly total. A month is roughly 2,900 half-hours, and the bill collapses all of them into one number. Nothing on it distinguishes 3am from 3pm.

    Interval data: your usage every 15 or 30 minutes.

  3. What does your always-on floor cost you?

    Every building has a base load that never switches off. It is typically the largest single line in an annual energy bill and it is the one nobody ever decided to buy. The bill cannot separate it from everything else, because it never sees your usage at rest.

    Interval data: the overnight trough is the floor, and we already compute it.

  4. Could that peak have been avoided?

    Whether the peak was one avoidable coincidence of equipment starting together, or a genuine sustained load, decides whether anything can be done about it. The bill shows only the result.

    Interval data: the shape around the peak shows whether it is a spike or a plateau.

  5. Would a different rate have been cheaper?

    ComEd's hourly pricing rate settles against what you used in each hour. Your bill does not record hours, so this is not merely unknown from a bill -- it is unanswerable from one, for anybody, including us.

    Interval data priced against the hourly rate for the same period, hour by hour.

Have the interval CSV? Add the bill's numbers.

Upload your ComEd interval data and a few numbers from your bill, and the demand charge is rebuilt from your own data and reconciled to the bill, to the cent. Upload the bill above instead and the period, the delivery class and the billed kW come filled in; the CSV is still yours to add.

Available for ComEd commercial accounts (demand billed). ComEd territory only for now.

The 30-minute interval export from your ComEd account. It stays private: it is read once to find the peak and is not stored.

Your bill’s service period. Look for “Service from [start] through [end]” and enter both dates exactly as shown.

The “service from” date.

The “service through” date.

Find the “Retail Delivery Service” line on your bill; the kW band next to it is your class. Secondary voltage.

The kW on your demand-charge line.

Phantom Grid reconstructs what your bill already reflects. It does not recommend, project savings, or sell anything.

Free tool

Reconcile your ComEd demand charge

The demand charge is the biggest line on a commercial ComEd bill, and it is set by a single 30-minute interval. This reconstructs that interval from your own meter data and reconciles the charge to the bill, to the cent.

What this tool does

A ComEd commercial demand charge is built from one number: your highest 30-minute interval of the billing period, priced by your delivery class. The bill shows you the final charge, not the moment that produced it. Upload your interval export and enter a few numbers off the bill, and Phantom Grid finds that single interval, recomputes the Distribution Facilities charge from ComEd’s own tariff, and reconciles it against what you were billed.

What you get back

The reconciled result resolves into the demand trace, the half-hour that set the charge marked on it, and the provenance behind every number, each traced to your own data and the published tariff. Where the reconstruction matches the bill, the charge is confirmed to the cent. Nothing is asserted without a source. Phantom Grid reconstructs what your bill already reflects; it does not recommend, project savings, or sell anything.

What you need

Your ComEd interval data export (the 30-minute CSV from your ComEd account), the service period dates off the bill, your delivery class, and the billed demand in kW from the demand-charge line. The file is read once to find the peak and is not stored. Available for ComEd commercial accounts billed on demand, ComEd territory only for now.

The free tool

This tool is free, and you run it yourself: you gather the numbers and upload one bill’s interval file. It checks the demand charge and nothing else on the bill. The bill reader rebuilds the other charges from the PDF alone, and is free too. No commission.