How to Connect Solar to WAPDA Grid — Net Metering Technical Guide Pakistan
Connecting your solar system to the WAPDA grid for net metering is the final step that unlocks your ability to export surplus electricity and earn credits on your bill. The process involves both technical installation requirements and a regulatory application process with your local DISCO. This guide covers both — in the correct sequence.
Technical Requirements for Grid Connection
| Requirement | Specification |
|---|---|
| Inverter type | Grid-tied or hybrid with grid-sync capability |
| AEDB certification | Inverter must be on AEDB approved list |
| Anti-islanding protection | Built into all AEDB-certified inverters — required by NEPRA |
| Automatic disconnection | Inverter must disconnect from grid within 0.2 seconds of grid outage |
| Voltage range | Must operate within ±10% of 230V AC |
| Frequency range | Must operate within 49–51 Hz |
| Metering | Bidirectional meter (provided/installed by DISCO) |
The Complete Grid Connection Process
- Install an AEDB-certified system: Your solar system must use AEDB-certified panels and inverter. Your installer provides the AEDB installation certificate upon completion.
- Prepare application documents: Gather CNIC copy, WAPDA bill copy, AEDB installation certificate, single-line electrical diagram of the system, inverter AEDB certification, panel specifications, and completed DISCO net metering application form (available from your DISCO’s website or office).
- Submit application to your DISCO: Submit the package to your local DISCO’s commercial/net metering office. DISCOs: LESCO (Lahore region), IESCO (Islamabad), HESCO (Hyderabad/Sindh), MEPCO (Multan), PESCO (Peshawar), QESCO (Quetta), FESCO (Faisalabad).
- Application fee payment: Pay the net metering processing fee (varies by DISCO — typically Rs. 5,000–15,000 for residential).
- DISCO technical inspection: A DISCO technical team visits your property to inspect the installation. They verify AEDB certificates, check that the inverter is correctly installed, confirm anti-islanding protection, and assess grid connection point.
- Agreement signing: After successful inspection, you sign a net metering agreement with the DISCO specifying your connection capacity, tariff conditions, and quarterly settlement terms.
- Bidirectional meter installation: DISCO installs a bidirectional (net metering) meter at your property. Meter cost is borne by the applicant — typically Rs. 15,000–25,000.
- Grid connection activation: After meter installation, your system is officially connected. From this date, exports are recorded and credited on your bill.
Key Timelines by DISCO
| DISCO | Typical Application-to-Activation Time |
|---|---|
| LESCO (Lahore) | 8–16 weeks |
| IESCO (Islamabad) | 6–12 weeks |
| FESCO (Faisalabad) | 10–20 weeks |
| MEPCO (Multan) | 12–24 weeks |
| HESCO (Hyderabad) | 12–20 weeks |
| PESCO (Peshawar) | 14–24 weeks |
ℹ️ Important: Your solar system works perfectly as a self-consumption hybrid system while the net metering application is pending. You save on your bill through self-consumption from day one — net metering only adds the ability to receive credits for exports beyond your own consumption.
Frequently Asked Questions
❓ Can I connect solar to the grid myself without professional help?
Technically possible but strongly inadvisable. Grid connection involves live AC mains wiring and must comply with NEPRA’s technical standards. Incorrect connection creates electrocution risk for WAPDA linesmen working on the distribution line (anti-islanding protection prevents this when installed correctly, but improper DIY connections can bypass safety mechanisms). Your DISCO will also require a professional installation certificate — self-installed systems cannot be approved for net metering.
❓ What is anti-islanding protection and why is it required?
Anti-islanding protection is a safety feature built into all grid-tied inverters that automatically disconnects the inverter from the grid within milliseconds when grid power fails. Without this, a solar system could continue energising the local grid line during a WAPDA outage — creating a dangerous “island” of live power that could electrocute linesmen working on what they believe is a dead line. NEPRA mandates anti-islanding as a non-negotiable requirement for all grid-connected solar systems in Pakistan.
❓ What happens to my net metering if I move house?
Net metering agreements are tied to the electricity connection at a specific address — not to you personally. If you sell or vacate the property, the net metering agreement transfers with the property to the new owner. The new owner must notify the DISCO of the change in ownership. If you’re buying a property with existing solar and net metering, verify the system’s registration and ensure the net metering agreement is transferred to your name.
❓ Can I have net metering for a 3-phase connection in Pakistan?
Yes — NEPRA’s net metering regulations cover both single-phase and three-phase connections. Three-phase net metering applications require a three-phase AEDB-certified inverter (or three single-phase inverters balanced across phases). Three-phase net metering systems are more common in commercial and industrial applications. The application process is the same as single-phase but with additional technical documentation for three-phase systems.
⚡ Ready to connect? Start with the right system
Sources & references
Tariff, net-metering, and policy details on this page draw on the following official sources. Rates change often, so confirm current figures with the relevant authority or a licensed installer before you decide.
- NEPRA — National Electric Power Regulatory Authority: electricity tariffs and the 2026 shift from net metering to net billing.
- AEDB — Alternative Energy Development Board: solar policy, installer standards, and net-metering guidance.
- Your local distribution company (DISCO) — for example LESCO, K-Electric, IESCO, MEPCO, PESCO or QESCO — for area-specific tariffs and the net-metering application process.
