Electricity Bill for 33 Days in Pakistan: How NEPRA's Pro-Rata Slab Rule Works
A late meter reading can stretch a bill past 30 days. NEPRA's manual pro-rates the units and carries the rest forward. See four worked examples and a check.
If your electricity meter was read late and your billing cycle ran past 30 days, NEPRA's Consumer Service Manual says the company must pro-rate your units to a 30 day month before choosing your slab. The extra units are not lost. They are carried forward and billed in the next month. That rule can keep you on the lifeline, protected or lower slab for the month.
A bill covering 33 days looks bigger than usual, and a reader who sees 309 units may assume the 301 to 400 slab applies. The manual says otherwise in a specific case. We read clause 6.1.1.1 of the revised 2025 Consumer Service Manual on NEPRA's website on 21 October 2026, and every figure below comes from it or from our own arithmetic on its examples.
The rule applies when the billing cycle runs longer than planned
Clause 6.1.1.1 applies in the event of force majeure or any unforeseen situation that stretches the billing cycle beyond the defined period. It does not give every long bill a discount. It covers delays that were outside the company's control.
The manual does not list the events. It says "force majeure or any unforeseen situation", so the company decides whether a delay qualifies. That is why you should keep your own record of the dates. A snapshot of the meter on the day you expected the reading helps, and checking your meter reading snapshot shows how to compare it with the company's photo.
Units are divided by the days in the cycle and multiplied by 30
The company divides the units on the meter by the number of days in the cycle, then multiplies by 30. That gives the units used for slab purposes in the current bill. Anything above that figure is carried forward to the next bill.
The manual gives four worked examples, all for a 33 day cycle. The last column is our own subtraction.
| Slab at risk | Units on the meter | Pro-rated to 30 days | Carried forward |
|---|---|---|---|
| Lifeline, up to 50 units | 54 units in 33 days | 49 units | 5 units |
| Lifeline, 51 to 100 units | 109 units in 33 days | 99 units | 10 units |
| Protected, up to 200 units | 208 units in 33 days | 189 units | 19 units |
| Lower to higher slab, 201 to 300 | 309 units in 33 days | 281 units | 28 units |
Check the first row yourself. 54 divided by 33 is 1.63 units a day, and 1.63 times 30 is 49. The 5 units left over go to the next month.
The lifeline and protected status stays in place for that month
The manual says the lifeline status stays intact when the pro-rated units fall within 50 or 100. The protected status stays intact when they fall within 200. A 208 unit meter reading over 33 days is therefore billed as 189 protected units.
Whether a protected or lifeline rate exists for your bill depends on the tariff in force, which changes. The manual only fixes the method. To see how the six month protected rule works now, read about the protected 200 unit rule.
Carried forward units must be printed separately on your bill
Clause 6.1.1.2 says the units carried forward must appear separately in the current bill as outstanding units. In the next bill they must show as carried forward units. The company must still complete the routine billing cycle in the next month.
So the check is simple. Find the carried forward line on your bill. If the pro-rated figure and the carried figure do not add up to the units on the meter, the arithmetic is wrong. Arithmetic errors are fixed at once under the NEPRA billing complaint deadlines.
- Note the reading date and the previous reading date on your bill.
- Count the days between them.
- Divide the units by the days, then multiply by 30.
- Compare the result with the units charged for your slab.
- Look for the carried forward units line.
If the company cannot read the meter, it can issue a provisional bill
Clause 6.1.5 covers a different case. If force majeure stops the company from taking an actual reading, you may send your own meter snapshot for actual billing. Otherwise it may issue a provisional bill on the lower of last year's same month or the average of the previous eleven months.
The manual adds that a bill with the slab benefit is issued on the actual reading once normal work resumes. Note the word "lower". It protects you from a high estimate. For a wrong or stuck meter instead, see how a faulty meter is replaced.
Clause 6.1.3.2 also says companies should send an SMS after each reading with the total units, the scheduled reading date and the actual reading date. Those two dates tell you at once whether your cycle ran long.
Common questions
Does every bill longer than 30 days get pro-rated?
No. Clause 6.1.1.1 applies when force majeure or an unforeseen situation stretches the cycle. A routine delay may not qualify, so ask the company in writing which case applied.
Do I lose the carried forward units?
No. They are billed in the next month, and the manual says they must be printed on the bill as outstanding units first.
Which slabs does the rule protect?
The manual's examples cover lifeline up to 50 and 100 units, protected up to 200 units, and the 201 to 300 slab.
What if the company never read my meter?
Send your own dated snapshot for actual billing. Otherwise the company may bill the lower of last year's same month or the previous eleven month average.
How long does the company have to fix a wrong calculation?
Seven days from your complaint for a wrong reading or wrong calculation, under clause 10.3.1(a). Arithmetic errors must be corrected at once.
Does this apply to K-Electric?
We did not check whether K-Electric follows the same clause. The manual binds the distribution companies, so ask K-Electric in writing.
How we verified this
What we checked, where we read it, and what we could not confirm.
Last checked 21 October 2026. We read clauses 6.1.1.1, 6.1.1.2, 6.1.3.2 and 6.1.5 of the NEPRA Consumer Service Manual, revised 2025. The carried forward column and the daily rate in the first row are our arithmetic on the manual's examples. We did not read the current tariff notifications, so we cannot say which protected or lifeline rates apply to your bill today. We did not test any company's billing.
About the author
Global Affairs & Political Economy Writer
Muhammad Hatim is a book lover who started writing because he enjoys it. At Pakistan Era he writes about international relations, geopolitics and the global economy, with a particular interest in South Asia and the forces behind current events.
