Solar installation paperwork in Perth: what you should receive and why it matters

After your solar installation is complete, a professional installer should provide a set of documents. Many homeowners receive them, file them away without reading, and forget about them until they need them — often years later when selling, claiming warranty, or troubleshooting a fault. Knowing what you're supposed to have and what each document is for means you can chase up missing paperwork while the installer relationship is fresh.

Document 1: Network Connection Notice (NCN) approval

What it is: A letter or email from Western Power confirming that your solar system has been approved for grid connection at your property. It will include a reference number.

Why it matters:

• Without a lodged NCN, your system is technically not grid-legal
• Required to register for DEBS (Synergy needs the NCN reference)
• Required if you sell your home and the buyer asks for solar compliance documentation
• Required for certain insurance claims

Who lodges it: Your CEC-accredited installer. They submit the NCN on your behalf before installation; Western Power approves it (usually electronically within days to weeks for standard residential systems).

When you receive it: Either during the pre-installation process (when the installer advises they've lodged it) or after commissioning. Some installers provide a copy of the approval; others just confirm it's been done verbally.

If you don't have it: Contact your installer and ask for the NCN reference number and a copy of the Western Power approval. If the installer is unresponsive, contact Western Power directly with your address to query the connection status.

Document 2: Electrical Safety Certificate (ESC)

What it is: A formal certificate issued by the licensed electrician who performed the electrical work (connecting the inverter to your switchboard, DC wiring, earthing). Certifying the work meets AS/NZS 3000 (Wiring Rules) and the specific solar installation standards.

Why it matters:

• Required for home building/contents insurance claims involving the solar system or an electrical fault
• Required documentation if you sell
• Verifies the installation was done by a licensed electrician (not unlicensed labour)
• Required for body corporate / strata applications in some situations

Who issues it: The licensed electrician who performed the work. In many cases, this is the installer's own licensed electrician employee; in others, a licensed subcontractor.

When you receive it: Should be provided at completion. If you paid in full on completion day and didn't receive the ESC, follow up within a week.

Format: Can be a paper certificate or email PDF. Some jurisdictions use specific forms; in WA, it's a Certificate of Compliance – Electrical Work.

Document 3: CEC Design and Installation Certificate

What it is: A document issued by the Clean Energy Council showing that the system was designed and installed by an accredited person, and confirming the system specifications (panel model, inverter model, system size, installation address).

Why it matters:

• Required for STCs to be assigned (your point-of-sale discount comes from STC assignment; this certificate is part of the paperwork trail)
• Confirms the installer was CEC-accredited at time of installation
• Provides a formal record of the system specification as installed

When you receive it: Some installers provide this proactively; others only if you ask. It's worth requesting explicitly.

Document 4: Panel warranty documentation

What it is: The panel manufacturer's warranty certificate or warranty terms for your specific panels. Covers:

• Product warranty: Defects in materials or workmanship (typically 10–15 years)
• Performance warranty: Minimum output guarantee over time (typically ≥80% at year 25)

Why it matters:

• If a panel fails or underperforms outside the warranty period, you have no recourse
• The warranty is with the manufacturer, not necessarily your installer
• Different panel models have different warranty terms — verify yours match what was quoted

What to do with it: Note the warranty hotline or claims process contact, and file it with your other solar documents. Also note the date of installation — warranties run from installation date.

Document 5: Inverter warranty documentation

What it is: The inverter manufacturer's warranty certificate or registration. Typically 10 years from installation date for a standard string inverter (Fronius, Sungrow, SolarEdge, etc.).

Important step — warranty registration: Many inverter manufacturers require you to register the inverter online to activate the full warranty. This is separate from what your installer does. Check your inverter documentation for a QR code or web address to register.

Why it matters:

• An unregistered inverter may have a shorter warranty period (some manufacturers offer 5 years without registration, 10 with)
• Provides direct manufacturer support relationship

Document 6: Workmanship warranty (from the installer)

What it is: The installer's own warranty covering the quality of the physical installation — roof penetrations, racking, cable management, connections. Minimum 5 years under CEC Code requirements.

Why it matters:

• Covers labour costs for fixing installation defects (panel leaks, wiring failures, mounting failures)
• Distinct from panel and inverter warranties (which cover the products themselves)
• The installer's continued business operation determines whether this is practical

What to check: Does it cover labour only, or parts and labour? Is there an explicit call-out fee for warranty claims?

Document 7: Monitoring platform setup confirmation

What it is: Login credentials for your inverter's monitoring platform (Fronius Solar.web, Sungrow iSolarCloud, SolarEdge monitoring, Enphase Enlighten, etc.). Many installers set this up on your behalf; others leave it to you.

Why it matters:

• Monitoring is how you know whether your system is generating as expected
• Required to detect faults early (underperforming strings, inverter errors)
• Needed for the annual health check

What to check: Log in to the monitoring platform and confirm you can see live data. If your system shows "no data" in monitoring, contact your installer to check the inverter's communication connection.

What to file and where

Keep these documents together — either:

• A physical folder in the home files
• A scanned folder in cloud storage

Include:

• NCN reference number and approval document
• ESC
• CEC certificate
• Panel warranty (with manufacturer contact and warranty period)
• Inverter warranty (with registration confirmation)
• Installer workmanship warranty
• Copy of the original quote/contract (for warranty dispute comparison)
• A note of the installation date

What to do if documentation is missing

Most installers have their own records. Contact them directly and ask for specific documents by name. A response time of 1–2 business days is reasonable for certificate requests.

If an installer is unresponsive or no longer operating:

• NCN: Contact Western Power directly with your address
• ESC: Contact your state electrical licensing authority (Electrical Safety Office WA / Energy Safety WA)
• CEC certificate: Contact the Clean Energy Council with your address and installation date
• Warranties: Contact the panel and inverter manufacturers directly with product serial numbers (found on the product nameplates on your roof/wall)

Solar documentation is worth 10 minutes of filing attention at installation time. The alternative is tracking it down under time pressure when you're selling your home or dealing with a warranty fault.