What each solar system produces in Karachi
Average production at 5.4 peak sun hours, 14% system losses and 96% inverter efficiency, with 550 W panels.
| System | 550 W panels | Units per day | Units per month |
|---|---|---|---|
| 1 kW | 2 | 4.5 | 134 |
| 2 kW | 4 | 8.9 | 267 |
| 3 kW | 6 | 13.4 | 401 |
| 5 kW | 10 | 22.3 | 669 |
| 7.5 kW | 14 | 33.4 | 1,003 |
| 10 kW | 19 | 44.6 | 1,337 |
| 15 kW | 28 | 66.9 | 2,006 |
| 20 kW | 37 | 89.2 | 2,675 |
Solar size needed in Karachi for your monthly units
| Monthly units | Array needed | 550 W panels | Guide |
|---|---|---|---|
| 200 | 1.5 kW | 3 | 200 units → |
| 300 | 2.2 kW | 5 | 300 units → |
| 400 | 3 kW | 6 | 400 units → |
| 500 | 3.7 kW | 7 | 500 units → |
| 600 | 4.5 kW | 9 | 600 units → |
| 700 | 5.2 kW | 10 | 700 units → |
| 800 | 6 kW | 11 | 800 units → |
| 1,000 | 7.5 kW | 14 | 1000 units → |
| 1,200 | 9 kW | 17 | 1200 units → |
| 1,500 | 11.2 kW | 21 | 1500 units → |
| 2,000 | 15 kW | 28 | 2000 units → |
Nearby and related cities
Net metering vs net billing in Pakistan
In February 2026 NEPRA replaced net metering with a net-billing model for new solar consumers. Under net billing, units you export are credited at a lower buyback rate than the price you pay for imported units, so using more of your own solar output directly (daytime loads, or a battery) is worth more than exporting it. Reports put agreements signed before 9 February 2026 outside the new rules, and sources differ on the exact new rate. Read the report.
Rules and rates have been revised more than once, so confirm the current buyback rate and eligibility with NEPRA or your distribution company before you decide on system size or a battery.
Frequently asked questions
How many solar panels do I need in Karachi?
It depends on your usage. At 5.4 peak sun hours, 500 units a month needs about 3.7 kW, which is 7 panels of 550 W. 1,000 units needs about 7.5 kW (14 panels).
How many peak sun hours does Karachi get?
This calculator uses 5.4 peak sun hours per day as a planning average for Karachi, which is 2% above the 5.3 average across the cities in the dataset. It is a planning value, not a measurement; you can change it in the wizard.
How many units does a 5 kW solar system produce in Karachi?
About 669 units a month on average (22.3 units a day), more in summer and less in winter.
Which electricity company serves Karachi?
Karachi is in Sindh and is served by K-Electric. Your distribution company handles solar interconnection applications and sets the rules for exporting surplus power.
Is net metering still available?
NEPRA moved new solar consumers from net metering to net billing in February 2026. Reports say earlier agreements are outside the new rules and that new buyback rates are lower, but sources differ. Confirm the current rules with NEPRA or your distribution company.