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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 real ComEd home bill with the numbers changed, not yours. Sixteen charge lines in three sections, each of which has to add up to its own printed subtotal before anything else is claimed.

Residential ComEd bill / Residential - Single

What a bill like yours proves

May 1, 2026 to Jun 2, 2026 (32 days)

16 lines read, 11 recompute to the cent from their own printed rate, 4 checked against filed records (ComEd filed ratebook, ICC posted price to compare).

All 16 charge lines, read, and they add up to $281.06

ChargeQuantityRateAmountFiled
Supply
Electricity Supply ChargePrice to compare1,518 kWh$0.08677$131.72$0.10399 with transmission ICC posting
Transmission Services ChargePrice to compare1,518 kWh$0.01722$26.14$0.10399 with supply ICC posting
Purchased Electricity Adjustment$3.49
Delivery
Customer ChargeDoes not move$15.50$15.39 of $15.50 filed ratebook
Standard Metering ChargeDoes not move$3.87$3.87 filed ratebook
Distribution Facility Charge1,518 kWh$0.06333$96.13$0.06333 filed ratebook
IL Electricity Distribution Charge1,518 kWh$0.00128$1.94$0.00128 filed ratebook
Taxes, fees and credits
Environmental Cost Recovery Adj1,518 kWh$0.00009$0.14
Renewable Portfolio Standard1,518 kWh$0.00516$7.83
Coal to Solar and Energy Storage Fund1,518 kWh$0.00009$0.14
Zero Emission Standard1,518 kWh$0.00087$1.32
Carbon-Free Energy Resource Adj1,518 kWh$-0.01344-$20.40
Energy Efficiency Programs1,518 kWh$0.00369$5.60
Energy Transition Assistance1,518 kWh$0.00084$1.28
Low Income Discount Recovery$1.35
State Tax$5.01
Total$281.06

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 16 line items = $281.06 = printed total
Source
Your bill, charge details section

What this bill settles

You are on ComEd's Single Family Without Electric Space Heat delivery class

We did not take this from the label on your bill, which does not say whether the home has electric space heat. We rebuilt the Distribution Facilities rate for all four residential delivery classes 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 $0.06333/kWh matches Single Family Without Electric Space Heat in the June 2026 billing period
Source
ComEd filed ratebook, matched to your bill

Price to compare: 10.399 c/kWh; you paid 10.629 c/kWh

ComEd printed a price to compare of 10.399 cents per kWh. Your supply and transmission rates add to 10.399 cents, which is the same number -- consistent with being on ComEd's default supply rather than a retail supplier. What you actually paid for supply was 10.629 cents per kWh, because the price to compare excludes the purchased electricity adjustment and your bill includes it.

How, and the source
How
supply $0.08677 + transmission $0.01722 = 10.399 c/kWh vs printed 10.399 c/kWh
Source
Your bill, supply section and the price-to-compare notice

You have no demand charge, so peak shaving saves you nothing on delivery

Your delivery charges are billed entirely on how much energy you use, not on how fast you use it. Cutting a short spike in your usage would not reduce this bill by a cent. Anyone selling you a residential battery on demand-charge savings in ComEd territory is selling a saving that does not exist on this rate.

How, and the source
How
Distribution Facilities Charge billed per kWh, not per kW
Source
Your bill, delivery section

Also on this bill

Supply $161.35 / Delivery $117.44 / Taxes, fees and credits $2.27

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 $161.35 vs printed $161.35; Delivery: lines sum to $117.44 vs printed $117.44; Taxes, fees and credits: lines sum to $2.27 vs printed $2.27
Source
Your bill, charge details section

The ICC posted 10.399 c/kWh for June 2026, the price your bill printed

The Illinois Commerce Commission posts ComEd's residential price to compare every month, and for June 2026 it posted 10.399 cents per kWh, the same figure your bill printed. That is a check against a source other than the bill itself. Your bill covers May 1, 2026 to June 2, 2026. ComEd's posted price rose from 9.660 (May 2026) to 10.399 (June 2026), and your supply lines were billed at the later figure for the whole period. On your 1,518 kWh the difference between the two postings is $11.22. A year earlier, June 2025's posting was 10.028, so this price is 0.371 cents higher than the same month last year. The ICC also posted the purchased electricity adjustment for June 2026 at 0.230 cents per kWh; the adjustment on your bill works out to 0.230 cents per kWh on the same 1,518 kWh, which agrees.

How, and the source
How
printed 10.399 c/kWh = ICC posting for 2026-06; (10.399 - 9.660) c/kWh x 1,518 kWh = $11.22; PEA $3.49 / 1,518 kWh = 0.230 c/kWh vs posted 0.230
Source
Illinois Commerce Commission, Historical Prices to Compare for ComEd, retrieved 2026-08-31; residential non-space-heat class

All-in rate: 18.52 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
$281.06 / 1,518 kWh = 18.515 c/kWh
Source
Your bill

13 months of usage, from 1,259 to 2,894 kWh a month

Your highest month was August at 2,894 kWh; your lowest was May at 1,259 kWh. That is a 2.3x swing across the year.

How, and the source
How
max 2,894 / min 1,259 = 2.30x
Source
Your bill, the usage graph

What your bill cannot tell you

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

  1. When did you actually use the electricity?

    Your bill resolves your usage to 13 monthly totals. 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.

  2. What is your peak demand, and when does it happen?

    Residential bills do not measure demand at all. Your meter records it, but nothing on the bill reports it. It is the number that decides whether a battery or a service upgrade is sized correctly.

    Interval data: the maximum interval, with its timestamp.

  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. 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.

The live price,
right now

ComEd Hourly Pricing over the last 24 hours. The rate changes every five minutes.

3.0 Live price

ComEd Hourly Pricing current price 2.0 cents per kilowatt hour. Over the last 24 hours the price ranged from -0.2 to 28.7 cents, averaging 2.8 cents. Source: ComEd Hourly Pricing.

Hourly Pricing

ComEd Live Prices: The Last 24 Hours, Every Five Minutes

The live ComEd Hourly Pricing rate drawn as a chart of the last 24 hours, so you can see where this moment sits against today's high, low and average. Updated every five minutes, straight from ComEd's public feed. Not affiliated with ComEd.

UPDATED AUG 13 2026

The instrument above shows ComEd's Hourly Pricing rate as it moves. On this program you pay the real hourly market price for the energy part of your bill instead of the flat rate, so the number changes every five minutes. The panel reads the current price, and the trace behind it is the last 24 hours, so you can see the shape of the day at a glance. The prices come straight from ComEd's public pricing feed. We are not affiliated with ComEd and we take no commission on anything.

What is the ComEd hourly price right now?

The large number in the panel is the running average of the current clock hour. That average is the figure you are actually billed on for energy this hour, because each hour's charge is the average of the twelve five minute prices inside it. The trace fills in the rest: every point is one five minute reading, so a calm flat line means a quiet grid and a tall climb in the late afternoon means the grid is straining. The dashed line marks the 24 hour average, so you can tell at a glance whether this moment is above or below a normal day.

How do I read the live price chart?

Three things carry most of the meaning. The current price tells you where you are now. The 24 hour high, low, and average tell you how unusual now is, because on Hourly Pricing the same kilowatt hour can cost a few cents overnight and several times that on a hot afternoon. And the shape of the trace tells you when the cheap and expensive hours tend to fall, which is the pattern a household on this program learns to run its flexible loads around. Hover any point on the trace to read the exact price and time.

One honest caution. A low price right now is a fact about the grid, not advice about your house. Whether running a load in this hour is a good idea depends on your own usage, your own equipment, and the rest of your day, none of which a live price can see. This page shows you what is true; it does not tell you what to do.

Is there a ComEd hourly pricing table or app?

ComEd publishes its own Hourly Pricing app and a table view of the same feed, and the chart on this page is built from that same public data. What this page adds is the shape. A table gives you the raw numbers hour by hour, which is useful when you want the exact figure; a trace gives you the pattern of the whole day in one look, which is what tells you when the cheap and expensive windows actually are. We plan to add a plain table view of the current day here as well, for readers who want the numbers rather than the curve.

How is the real-time price set?

The price on the trace is the wholesale market price for the ComEd region, passed through to you without a markup. The program doing the passing is ComEd Hourly Pricing, which also goes by its formal name, ComEd Real-Time Pricing. Starting in June 2026, Hourly Pricing bills also carry a separate summer Capacity Charge tied to your peak draw during the grid's highest demand hours, which is a residential cousin of a commercial demand charge and is not shown in this energy price. So a full picture of a summer bill on this program has two moving parts: the hourly energy price you see here, and a peak charge set by your worst summer afternoons.

Would hourly pricing have saved you?

The live price answers "what is it doing now." It cannot answer the question that actually matters, which is "would this have saved me." That answer does not live in the price. It lives in your own usage, hour by hour, priced against these rates and compared to the flat rate you pay today. Your own ComEd data holds that answer, and the independent, no commission tool that reconstructs it from your hours is on its way, so you can see what you would have paid rather than trust a generic promise. It reconstructs your own history: not a projection and not a pitch.

What is the current ComEd hourly price?

The panel above shows it live: the running average of the current hour, which is the price the energy part of your bill is charged at this hour. It updates as ComEd's feed updates, every few minutes.

Where does this price data come from?

Directly from ComEd's public Hourly Pricing feed. We display it with attribution and are not affiliated with ComEd. We do not sell energy and take no commission.

Why does the price change so much during the day?

Because it is the real wholesale market price passed through without a markup. When demand on the grid is low, usually overnight, the price is low. When demand is high, usually on hot summer afternoons, it climbs, sometimes sharply.

Does a low price right now mean I should use power now?

This page does not give that advice. A low price is a fact about the grid at this moment. Whether shifting usage into it helps you depends on your own home and habits, which the price alone cannot see.