Net Metering Savings Estimator

A net metering savings calculator Pakistan solar indicative estimate using local import and export tariffs. Use the free Net Metering Savings Estimator below — enter your values and get instant results, right in your browser. Monthly generation (kWh) = system kW × peak sun hours × 30. Self-used units = generation × self-use % (valued at import tariff). Exported units = generation × (1 − self-use %) (valued at export rate). Monthly saving = self-used × import tariff + exported × export rate.

How to use the Net Metering Savings Estimator

Net metering lets your solar panels sell daytime surplus back to the grid — but the export rate is lower than the import tariff, so your real saving depends on how much you use directly. This net metering savings calculator Pakistan solar indicative tool splits your monthly generation into self-used units (valued at the full tariff) and exported units (valued at the export rate) to give a realistic monthly saving figure. Use it to estimate payback time before signing a net-metering agreement.

  1. Enter your planned or installed system size in kW.
  2. Enter peak sun hours for your city (5 is typical for most of Pakistan; 5.5–6 for southern Punjab/Sindh).
  3. Estimate what percentage of generation you use directly during the day — 30% is typical for working households.
  4. Enter your import tariff and the DISCO export rate from your latest bill.
  5. Click Calculate to see monthly generation, self-use vs export split, and the indicative rupee saving.

Formula

Monthly generation (kWh) = system kW × peak sun hours × 30. Self-used units = generation × self-use % (valued at import tariff). Exported units = generation × (1 − self-use %) (valued at export rate). Monthly saving = self-used × import tariff + exported × export rate.

Worked example

A 5 kW system at 5 sun hours generates 750 kWh/month. With 30% daytime self-use: 225 kWh × Rs 45 = Rs 10,125 avoided imports, plus 525 exported kWh × Rs 27 = Rs 14,175 credit — total indicative saving Rs 24,300/month. At a Rs 900,000 system cost, simple payback is about 37 months.

Frequently asked questions

NEPRA sets the export rate periodically and DISCOs apply it with adjustments; it has typically been well below the import tariff (often around Rs 25–30/kWh recently). Always confirm the current rate on your DISCO bill or NEPRA notification before calculating payback.

After installation by a licensed vendor, DISCO inspection and meter replacement typically take 4–12 weeks depending on the DISCO and city. Your system generates from day one, but export credit only starts after the net meter is installed.

Usually yes — a 5 kW system can offset Rs 20,000–28,000/month depending on tariffs and self-use, giving a 3–4 year simple payback. Higher daytime self-use improves returns because self-used units are worth the full import tariff.

Generator Fuel Cost Calculator A generator fuel cost per hour calculator petrol Pakistan that prices every hour your generator runs. Solar Water Pump HP Sizing Calculator A how many solar panels do I need for a 1 HP water pump calculator with panel count and array size. Extension Cable Voltage Drop Calculator A voltage drop calculator for extension cable 220v home wiring showing lost volts and percentage.