Why Your PESCO Bill Is High and How to Calculate and Cut It
A PESCO bill that comes in higher than you expected is rarely a mystery once you break it apart. The bill is your metered units run through the slab rates, with adjustments and taxes on top. Reproduce that arithmetic and you can see precisely which part grew, and that almost always points to something you can act on.
Estimate your bill from the meter
Start with your units for the month: the current meter reading minus the previous reading. Price those units through the progressive slabs, then add the per-unit surcharge, electricity duty, GST, the month's FPA and the fixed fees. Because that is tedious to do by hand, our bill estimator takes either your units or two meter readings and lays out every line. It is an estimate rather than the official bill, since it cannot see your arrears or the exact FPA for the month, but it lands close and shows what is driving the figure.
The common reasons a PESCO bill is high
| Cause | How it shows | What to do |
|---|---|---|
| Lost protected status | Usage over 200 units; unprotected rates applied | Return to 200 units or below across six months |
| Slab jump | More units priced in a higher slab | Reduce or reschedule heavy loads to stay in a lower slab |
| High fuel adjustment | A large F.P.A line for the month | Temporary; it falls back when fuel costs ease |
| Estimated reading | Reading marked average or estimated | Report the real meter reading for correction |
| Arrears carried forward | A previous-balance line | Clear the arrears; confirm it was actually unpaid |
The one that catches the most people is losing protected status: crossing 200 units moves you from about Rs 12 to 14 per unit onto rates starting at Rs 23.59, which can double a bill on its own.
A worked example
Take an unprotected home using 320 units in a month. The energy charge is 100 units at Rs 23.59, plus 100 at Rs 30.07, plus 100 at Rs 34.26, plus 20 at Rs 39.15, which is about Rs 9,575 before anything else. On top of that come the per-unit surcharge, roughly 1.5% electricity duty, 18% GST, the month's FPA, and the Rs 35 TV fee and Rs 25 meter rent. Protected rates cannot apply here, because going over 200 units removes protected status, so the whole 320 units are priced on the unprotected scale. Change the units or the FPA in our estimator and you can watch each line move, which makes it easy to see which part of the bill is really driving the total.
How to bring your PESCO bill down
- Defend the 200-unit line. If you are close to it, staying under keeps you on protected rates and is the biggest single saving for most homes.
- Mind the slab boundaries. Trimming standby waste and heavy loads to stay in a lower slab lowers the rate on your top units.
- Catch estimated bills. Match the reading on the bill to your meter and report the real number if it was estimated.
- Confirm the tariff category. Make sure a home connection is billed as domestic and not on a higher-rate category.
- Pay on time. Missing the due date adds a surcharge, as the duplicate bill and due dates guide explains.
If the numbers still do not add up
When your own estimate is well below the billed amount and none of the causes above fit, the meter reading or the applied tariff may be wrong. Record your current reading, keep the bill, and raise it with PESCO quoting your reference number. A verified over-reading is adjusted in a later bill.
Frequently asked questions
How do I calculate my PESCO bill?
Take your units for the month (current reading minus previous), price them through the progressive slabs, then add the per-unit surcharge, about 1.5% electricity duty, 18% GST, the month's FPA and the fixed TV and meter fees. The on-site estimator does this automatically.
Why did my PESCO bill increase so much this month?
The most frequent reason is losing protected status by going over 200 units, which roughly doubles the per-unit rate. A slab jump, a high fuel adjustment, an estimated reading, or arrears carried forward can also cause a sharp rise.
Does using fewer units really lower my PESCO bill a lot?
Yes, especially near the 200-unit mark. Staying at or below 200 units keeps you on protected rates that are less than half the unprotected rates, so a small cut that keeps you under the line saves far more than the units alone.
What should I do if I think my PESCO bill is wrong?
Compare the reading on the bill with your meter and estimate the charge from your units. If it is still far off, keep the bill, note your current reading, and lodge a complaint with PESCO quoting your reference number so the reading or tariff can be checked.
Sources
- NEPRA notified residential (non-ToU) tariff slab structure, FY 2024-25 (base tariff reviewed July 2024). Confirm the current figure against your printed bill, as fuel and quarterly adjustments change it.
- Consumer-end tariff schedule, WAPDA/DISCO domestic tariff (A-1), NEPRA determination FY 2024-25.
- This site's own bill estimator, which applies the same July 2024 slab rates.
- PITC online bill portal for PESCO: bill.pitc.com.pk/pescobill (Power Information Technology Company).