MEPCO Green Meter Bill Calculation: How to Read Your Meter and Work Out Your Bill

By Mepco Bill Editorial Team · editor@mepco-bill.net

What a MEPCO Green Meter Actually Records

A green meter is not a single-number device. It is a bidirectional meter that keeps separate running totals for electricity you draw from MEPCO’s grid (import) and electricity your solar system sends back (export). That separation is the foundation of every green meter bill calculation.

On most MEPCO green meters, the important registers are organized in a predictable pattern. Even-numbered codes typically show import quantities, while odd-numbered codes show export quantities. The total import register is usually code 04, and the total export register is usually code 05. Peak (Rate A or T1) and off-peak (Rate B or T2) versions of those totals appear in adjacent codes, such as 06 and 08 for import and 07 and 09 for export. MEPCO’s net-meter reading guide also identifies display sequences for peak export, peak import, off-peak export, and off-peak import, though the exact sequence can vary by meter model [citation:2].

This matters because your bill is not calculated from one net number. MEPCO reads the import registers and the export registers, applies the appropriate treatment to each, and then combines the results. If you only note the total import and total export, you can still make a reasonable estimate, but you lose the ability to check peak and off-peak components separately.

A practical reading habit is to record the date, time, and every visible green-meter code that matters: 04, 05, 06, 07, 08, and 09. Compare those values with the previous month’s record. The difference in each register is the monthly quantity for that category. If the total import does not equal peak import plus off-peak import, or total export does not equal peak export plus off-peak export, re-read the screen before assuming a fault.

How the Bill Calculation Works Under 2026 Rules

The 2026 framework changed the arithmetic for many MEPCO solar consumers. Under the NEPRA Prosumer Regulations 2026, new net-metering connections operate under net billing rather than the older one-for-one net metering arrangement [citation:3]. In practice, this means imported units are charged at the applicable MEPCO tariff, while exported units are credited at a separate export value set through NEPRA’s net-billing mechanism. The two are not automatically equal.

For a green meter consumer, the energy portion of the bill follows a basic structure: charge all imported units at the relevant import rate or rates, calculate an export credit using the applicable export rate, and subtract the credit from the import charge. If the credit is larger than the import charge, the excess is typically carried forward or settled according to MEPCO’s net-billing process rather than paid out as cash on the spot [citation:2]. A worked example from a MEPCO bill-checking guide shows peak and off-peak import charges calculated separately, then an export credit subtracted at a lower per-unit value, producing a net energy charge before fixed charges and taxes are added [citation:2].

Two cautions are important. First, the export rate applied to your account may differ from illustrative rates you see online, because the value is set through NEPRA determinations and can be revised. Second, the energy calculation is only one part of a real bill. Fixed charges, fuel adjustments, quarterly adjustments, and taxes are added separately and can substantially change the final payable amount. A calculation that stops at “imports minus exports” is an energy estimate, not a complete bill prediction.

For consumers still on an older net-metering agreement, the treatment of exports may follow different terms than for a new net-billing connection. The meter readings look the same, but the credit logic can differ. That is why the first step in any accurate calculation is knowing which framework applies to your connection, not simply assuming that every exported unit is worth the same as an imported unit.

Step-by-Step: Calculating Your MEPCO Green Meter Bill

Use the following sequence to turn meter readings into a working estimate. You will need your current readings, your previous readings, and a recent MEPCO bill to identify the charges that apply to your connection.

Step 1: Record the current register values. Note the date and read codes 04, 05, 06, 07, 08, and 09 if your meter displays them. Write them down in a fixed order so you can compare them next month without confusion.

Step 2: Subtract the previous month’s readings. For each register, current value minus previous value gives the units used or exported during the billing period. Do this separately for total import, total export, peak import, off-peak import, peak export, and off-peak export.

Step 3: Check the arithmetic on the meter. Total import should equal peak import plus off-peak import. Total export should equal peak export plus off-peak export. If the sums do not match, re-read the codes; a misread digit is more common than a meter error.

Step 4: Apply the import tariff. Charge the imported units at the rates shown on your bill or the tariff schedule that applies to your consumer category. If your bill separates peak and off-peak rates, use the corresponding units for each rate rather than applying one blended rate to everything.

Step 5: Apply the export credit. Multiply exported units by the export rate that applies to your account under the current net-billing or net-metering arrangement. Keep this figure separate from the import charge until you have checked whether any peak or off-peak distinction affects the export value.

Step 6: Subtract the export credit from the import charge. The result is your estimated net energy charge. A positive result means you owe energy charges; a negative result means you have an energy credit to carry forward or settle under MEPCO’s process [citation:2].

Step 7: Add the non-energy lines. Add fixed charges, fuel adjustment, quarterly adjustment, electricity duty, and any applicable taxes. These lines are not reduced by export credits in the same way as energy charges, so they can turn a negative energy estimate into a positive payable bill.

Step 8: Compare with the actual bill and refine. Once the MEPCO bill arrives, compare your estimate line by line. If the difference is large, check whether your export rate assumption was correct, whether the billing period matches your reading dates, and whether any adjustment or arrears were included. Over two or three cycles, this comparison will show you which assumptions need adjusting for your own connection.

Worked example: a simple monthly estimate

Suppose your previous readings were total import 4,200 and total export 1,100. This month you read total import 4,750 and total export 1,320. The monthly quantities are 550 imported units and 220 exported units.

If your applicable import charge averages Rs 45 per unit, the import energy charge is 550 × 45 = Rs 24,750. If the export credit rate is Rs 11 per unit, the export credit is 220 × 11 = Rs 2,420. The net energy estimate is Rs 24,750 − Rs 2,420 = Rs 22,330. A real bill would then add fixed charges, adjustments, and taxes, so the final payable amount would be higher than this energy-only figure. The numbers here are illustrative; substitute your own tariff and export values.

Edge cases to watch

Meter replacement or reset. If MEPCO replaces your green meter, the new meter may start from zero. Do not subtract the old meter’s final reading from the new meter’s first reading. Use the replacement reading as the new baseline and check that the bill reflects the change correctly.

Missing or estimated readings. If a reading is estimated rather than actual, your calculated quantity will differ from the billed quantity. Compare the reading date on the bill with your own record before treating a discrepancy as an error.

Export credit larger than import charge. A negative energy estimate does not necessarily mean a zero bill. Fixed charges and taxes can still produce a payable amount, and the treatment of excess credit depends on your agreement and MEPCO’s settlement process [citation:2].

Peak and off-peak mismatch. If your bill separates peak and off-peak import charges, do not apply a single average rate to total imports. The difference between peak and off-peak rates can be significant enough to make a blended estimate misleading.

What Is a MEPCO Bill and How Does the Green Meter Fit In?

Before you can check a green meter calculation against reality, it helps to be clear about what a MEPCO bill actually is. A MEPCO bill is the monthly electricity statement issued by Multan Electric Power Company to consumers in its service territory across South Punjab. It shows your consumer number, reference number, tariff category, sanctioned load, meter readings, units consumed, and the charges payable for the billing period.

For a green meter consumer, the MEPCO bill does something extra: it reports imported and exported units separately. The bill may print both sets of readings and list the export credit as its own line before arriving at a net energy charge. This is why a green meter bill is not just a higher or lower version of an ordinary bill; it is a bill built from two opposing flows of electricity.

If you want to see how your own calculation compares with the official statement, the first step is knowing how to get your MEPCO bill online. The official route is the PITC web bill page at bill.pitc.com.pk/mepcobill, which is also linked from the MEPCO website menu [citation:1]. You need your 14-digit reference number, which is printed on any old bill, and you do not need to register or log in. The page lets you view the latest bill and print or save it as a PDF [citation:1].

How Do I Check My MEPCO Bill Online?

The phrase “MEPCO bill check online” covers a simple action: retrieving your latest bill from the official portal. Here is the process in plain steps.

Open the PITC web bill page at bill.pitc.com.pk/mepcobill. Keep Reference No selected, type your 14-digit reference number without spaces or dashes, choose U or R to match the letter on your bill, and press Search. Your latest MEPCO bill opens on the screen [citation:1]. From there, you can print it or save it as a PDF using your browser’s print option.

If you do not have the reference number handy, the same page offers a Customer ID option. You can switch to that and enter your Customer ID instead [citation:1]. MEPCO’s own mobile app also provides a Pay Bill service that lets you download and pay your bill, according to the MEPCO website [citation:5].

The key point for green meter users is that the online bill is the document that shows how MEPCO has actually treated your import and export registers. Your manual calculation is an estimate; the online bill is the official record. Checking the bill online is free, and it does not require CNIC or payment details [citation:1].

How to Pay MEPCO Bill Online

Once you have checked your bill and compared it with your green meter calculation, the next practical question is how to pay MEPCO bill online. MEPCO bills can be paid through several digital channels, and the right one depends on what you already use.

Online banking is one option. The general flow is to log in to your bank’s app or portal, find the bill payment section, add MEPCO as a biller using your reference number, verify the amount, and authorize the payment [citation:10]. Mobile wallets such as JazzCash and EasyPaisa also support utility bill payments: you select the bill payment option, choose MEPCO as the provider, enter the reference number and amount, and confirm with your PIN [citation:10].

For consumers who prefer scanning, MEPCO has been rolling out Raast QR code payments on bills. The QR code can be scanned with a Raast-enabled mobile banking app, which fills in the bill amount and reference number automatically, and you confirm the payment in the app [citation:14]. If your bill does not have a QR code yet, the reference-number route through online banking or a mobile wallet remains the standard method.

The important habit for green meter users is to pay the billed amount, not your calculated estimate. Your calculation helps you understand the bill and spot discrepancies, but the payable amount on the official MEPCO bill is what the payment system will expect.

How Do I Get My Old MEPCO Bill?

There are practical reasons to want an old MEPCO bill when you are working on green meter calculations. You may need the previous month’s export register, the opening credit balance, or the reference number itself. The good news is that getting an old bill is usually straightforward.

The first place to look is the same online portal you use for a current MEPCO bill check online. When your bill opens on the PITC page, you can print it or save it as a PDF [citation:1]. If you have saved previous bills as PDFs, your own archive becomes the fastest source for an old bill. If you have not saved them, the portal is still the starting point, though it is designed primarily for the latest bill.

If you need a bill from an earlier period that is not available through the online view, visit a MEPCO customer service centre with your reference number or Customer ID. The reference number is printed on every MEPCO bill, and it is the key that lets staff locate your account [citation:1]. Keeping a photograph or PDF of each month’s bill is the simplest way to avoid needing to retrieve an old one later, especially when you are tracking green meter credits across billing cycles.

Comparing Green Meter Reading Codes and Bill Lines

The table below summarizes how the readings you note from the meter typically map to the lines you see on a MEPCO green meter bill. Exact code numbers can vary by meter model, so always follow the labels on your own meter display and the readings printed on your bill.

The key takeaway is that the meter gives you quantities, while the bill gives you priced quantities. Your calculation bridges the two by applying the rates and rules that MEPCO uses for your connection. When the bill arrives, compare the billed import and export quantities with your recorded differences first. If the quantities match but the rupees do not, the gap is likely in the rates, fixed charges, or adjustments rather than in your reading.

Frequently Asked Questions

How do I calculate my green meter bill?

Record your current and previous readings for import and export registers, subtract to find the monthly units, charge imports at your applicable tariff, credit exports at the net-billing rate, subtract the credit from the import charge, and then add fixed charges and taxes. The result is an estimate; the official MEPCO bill remains the final record.

Go to bill.pitc.com.pk/mepcobill, enter your 14-digit reference number, choose U or R, and press Search. Your latest bill opens for viewing, printing, or saving as a PDF. No login or payment is required [citation:1].

What is a MEPCO bill?

A MEPCO bill is the monthly electricity statement from Multan Electric Power Company showing your consumption, meter readings, tariff category, and charges. For green meter consumers, it also shows imported and exported units separately.

Save each bill as a PDF when you check it online. If you need an older bill you did not save, visit a MEPCO customer service centre with your reference number or Customer ID, or check whether the online portal still displays the previous billing period.

Use online banking, JazzCash, EasyPaisa, or a Raast QR code on the bill if available. Enter your reference number and the billed amount, verify the details, and confirm the payment in the app [citation:10][citation:14].

Why is my calculated green meter bill lower than the amount I have to pay?

Your calculation produces a unit-charge estimate. The payable amount also includes fixed charges, meter rent, taxes, surcharges, and duties, which are added after the per-unit cost of electricity.

Should I subtract exported units before or after applying the tariff?

Net the export against import first to get net units, then apply the tariff to that net figure. Applying the tariff to gross import and deducting export value afterwards can give a different result.

My export was larger than my import. Will I receive a cash refund?

A negative net-unit result usually produces a credit carried to a later bill rather than a cash payment. Check the credit line on the bill rather than expecting the full negative amount as a refund.

Do peak and off-peak units use the same rate?

No. Units consumed in the peak window are priced differently from off-peak units, so a calculation that combines them into one import total will not reproduce the bill exactly.

Can I calculate my bill without the previous reading?

No. You need the opening and closing reading for the billing period, plus the export register, to establish how many units were imported and exported during that period.

Are domestic and commercial green meter rates the same?

No. Rates depend on the tariff category printed on your bill. Always confirm your category before comparing a calculation with the billed amount.

Can a manual calculation replace the official bill?

No. It is an estimate for checking and planning. Tariff schedules and netting rules are set by the utility and regulator, and the official bill remains the record of what was charged.

Conclusion

MEPCO green meter bill calculation comes down to three habits: read the right registers, apply the right rates, and compare your estimate with the official bill. The green meter separates import and export, and often peak and off-peak, so a single-number estimate will rarely match the bill exactly. Once you know your reading codes and your applicable export treatment, the calculation becomes a repeatable monthly check rather than a mystery.

Use the MEPCO bill check online portal to retrieve the official bill, keep the PDF for your records so you always have an old MEPCO bill when you need it, and pay through a channel that suits you. The calculation is your tool for understanding the bill, not a replacement for it.