What your ComEd bill proves, and what it cannot
A bill is a receipt, not a record. It tells you what you were charged with real precision, and tells you almost nothing about when you used the electricity or why the total came out the way it did. This reads the first part properly and is honest about the second.
What this tool does
It reads every charge line on your bill and re-adds them. If the lines we extracted do not sum to the Service Period Total ComEd printed, we missed something, and we tell you that instead of showing you a breakdown we cannot vouch for. Each volumetric line is recomputed from its own printed rate, and each section is checked against its own printed subtotal.
On a commercial bill the demand charge is rebuilt from ComEd’s filed ratebook, rider by rider, and has to match the bill to the cent. Your delivery class is identified by which class actually reproduces the rate printed on your bill, not guessed from your peak kW. On a residential bill we do not hold ComEd’s filed residential rate sheets, so the check is against the rates ComEd printed for you, and the report says so rather than implying a comparison it did not make.
What it cannot do, and says so
Four questions decide whether an energy decision is a good one, and a bill answers none of them: when you used the electricity, what your peak was and when it happened, what your always-on floor costs, and whether a different rate would have been cheaper. That last one is not merely unknown from a bill. ComEd’s hourly pricing rate settles against each hour of usage, and a bill does not record hours, so it is unanswerable from the document by anyone.
The report names those gaps after showing you everything the bill does establish, because a gap you cannot see past is a sales technique and a gap explained is a finding.
What you need
The PDF bill you download from your ComEd account. A photo or a scan will not work: those have no text layer, and we would rather refuse than read numbers off an image and be wrong about your money.
What happens to your bill
It is read once, in the moment, and discarded. We do not write it to disk, we do not keep a copy, and nothing on it is sold or shared. If you then ask us to request your interval data from ComEd, we keep the record of your asking, and the Electric Choice ID and meter number are deleted once the request has been submitted.
Then what
If you want the gap closed, we can request your interval data from ComEd for you. That is your call and your click, and it is recorded as such. Once the data arrives, the interval analyzer reads your load shape, and for a commercial demand charge the reconciliation tool finds the exact half hour that set it.