• By Best Solar Company PK
  • 03 Aug, 2026
  • Solar Policy
  • 7 min read

Getting rooftop solar approved in Pakistan is no longer just about bolting panels to your roof. Since NEPRA's Prosumer Regulations took effect, every grid-connection file hinges on one credential: an **AEDB active installer** who signs and stamps your paperwork. Pick the wrong company and your application gets bounced — or worse, you pay lakhs for an "approval" that was never real.

This guide shows Pakistani homeowners and businesses exactly how to confirm you are dealing with a genuine AEDB active installer, why the stamped single-line diagram (SLD) now decides your fate, and how to spot the fraud spreading across the solar market in 2026.

What an "AEDB Active Installer" Actually Means in 2026

The Alternative Energy Development Board (AEDB) certifies solar firms that meet minimum standards for engineering staff, equipment and safety practice. Only a certified company can legally prepare and submit a grid-connection application to your DISCO — LESCO, K-Electric, IESCO, MEPCO and the rest.

The word "active" is doing the heavy lifting. A certificate that has expired, been suspended, or was issued to a *different* company name is not active — and DISCOs now cross-check the installer's status before processing your file. AEDB issues certification for three years and lists firms in tiered categories (currently C-1, C-2 and C-3 under the AEDB Certification Regulations, 2021), each tied to a maximum project size. A domestic rooftop needs an installer whose category covers your system in kilowatts.

No AEDB active installer, no net-metering (now net-billing) agreement. It is the single most common reason clean-looking applications get rejected.

One important context for 2026: on 9 February 2026, NEPRA replaced the old net-metering framework with a **net-billing** model for all new connections. The installer and SLD rules did not relax with that change — they got stricter, because the regulator wants every grid-tied system to be safe, traceable and installed by a competent firm.

Why a Stamped Single-Line Diagram (SLD) Is Now Non-Negotiable

A single-line diagram is the electrical map of your system. It shows how power flows from the panels, through the inverter, past the protection devices, and into your bi-directional meter. Under the current rules your **AEDB active installer must sign and stamp the SLD** — it is not a form you can download and self-fill.

A compliant, stamped SLD must clearly show:

  • The DC side: panel strings, DC isolator/breaker and a surge protection device (SPD)
  • The inverter with anti-islanding protection (IEEE 1547 / UL 1741 / IEC 62116)
  • The AC side: AC breaker, proper earthing/grounding and the meter interconnection point
  • A system capacity that does **not** exceed your sanctioned load

The stamp does two jobs. It proves a certified engineer designed the safety chain, and it makes the installer accountable if the DISCO inspector finds a fault during commissioning. A reused, generic or unstamped diagram is a fast track to rejection. If you are still deciding on hardware, our guide to choosing a net-metering-ready inverter explains which anti-islanding models pass inspection.

How to Verify Your Installer Is an AEDB Active Installer

Do this **before** you sign a contract or pay any advance — not after.

1. **Get the certificate number.** Ask for the company's AEDB certification certificate; note the exact registered name and certificate number. 2. **Check the official list.** Match the firm against <a href="https://www.aedb.org.pk" target="_blank" rel="noopener">AEDB's official certified-installer list</a> — letter for letter, not "close enough." 3. **Confirm it is active and unexpired.** Certificates run three years; verify the validity dates and that the status is not suspended. 4. **Match the category to your system size.** Ensure the installer's category (C-1/C-2/C-3) covers your kW. 5. **Check the name matches everywhere.** The company on the certificate must be the same one signing your agreement and stamping your SLD. 6. **Cross-check with your DISCO.** Your distribution company confirms installer status when it reviews the file; you can also ask its net-metering desk directly.

For the full paperwork flow, see our net-metering application guide for Pakistan.

Installer Fraud in Pakistan: Red Flags to Avoid

Fraud usually looks respectable until the file collapses at the DISCO stage. Walk away if you see any of these:

  • A **"borrowed" certificate** — the firm quoting you is not the one named on the AEDB certificate.
  • A separate **"AEDB fee" or "approval fee."** Consumers pay no fee to AEDB; that line item is a scam.
  • Refusal to write the **AEDB certificate number into your contract**.
  • An **unstamped SLD**, or one the salesman fills himself without an engineer's stamp.
  • Pressure to **oversize** beyond your sanctioned load (a guaranteed rejection — read our system-sizing and sanctioned-load guide).
  • **No physical office, no NTN, cash-only** with no proper tax invoice.

Documents, Costs and Timeline: What a Clean File Looks Like

Because 2026 splits consumers into two regimes, know which one you fall under before budgeting. Both still require an AEDB active installer and a stamped SLD.

| Feature | Net Metering (existing consumers) | Net Billing (new, from Feb 2026) | |---|---|---| | Applies to | Contracts signed before Feb 2026 | All new/renewed connections | | Export (buyback) rate | Grandfathered (~Rs21–27/unit) until expiry | National avg purchase price (~Rs10–11/unit) | | Grid import charge | Normal slab tariff (often Rs50+/unit) | Normal slab tariff (often Rs50+/unit) | | Contract term | 7 years | 5 years (+5-year renewal) | | AEDB active installer | Required | Required | | Stamped SLD | Required | Required |

**Documents to keep ready:** applicant's CNIC (matching the meter's name), the latest electricity bill with **no arrears**, proof of ownership (Fard/Registry/Allotment) or a notarised NOC from the landlord if rented, the inverter and panel datasheets, and the installer-stamped SLD.

**Realistic 2026 costs:** a quality 5 kW on-grid system runs roughly **PKR 850,000–1,300,000**, and a 10 kW system about **PKR 1.6–2.4 million**, depending on brand and structure. DISCO processing and the bi-directional meter carry only nominal official charges — anything labelled an "AEDB approval fee" is not legitimate.

**Timeline:** DISCOs are bound to process a *complete* application within 30 days, though the full journey from application to commissioning typically takes three to four months. A missing stamp or a non-active installer resets that clock. You can confirm any rule directly with the regulator at <a href="https://www.nepra.org.pk" target="_blank" rel="noopener">NEPRA</a>.

Frequently Asked Questions

**How do I check if my solar installer is AEDB registered?** Ask for the AEDB certificate number and match the company name against the official list on aedb.org.pk. Confirm the certificate is unexpired, the status is active, and the category covers your system size. If the name differs even slightly from your contract, treat it as a red flag.

**Will an expired AEDB certificate get my application rejected?** Almost always, yes. DISCOs check that the installer is an AEDB *active* installer at the time of submission. An expired, suspended or mismatched certificate is a leading cause of rejection, even when your panels and inverter are perfectly compliant.

**Who pays for the AEDB certification — me or the installer?** The installer. Certification is the company's cost of doing business. As a consumer you never pay AEDB a "registration" or "approval" fee; anyone charging you one is committing fraud.

**Can I still get net metering in 2026, or only net billing?** New connections now fall under net billing, where exported units are bought at roughly Rs10–11 per unit. Existing net-metering consumers keep their older, higher rate until their contract expires — but adding panels ("material modification") can push them onto net-billing terms.

The Bottom Line

In 2026, your solar savings begin with due diligence, not installation. Confirm your **AEDB active installer** on the official list, insist on a properly stamped single-line diagram, and refuse any "AEDB fee." Ten minutes of verification protects you from a rejected file, a failed inspection, and outright fraud. Ready to move forward? Ask any installer for their AEDB certificate number today — a genuine firm will hand it over without hesitation.

Best Solar Company PK designs and installs reliable solar systems in Rawalpindi, Islamabad, Lahore, Multan, Taunsa Sharif and Karachi. Contact us for a free survey and the best advice for your home or business.