Somewhere in the excitement of picking panel brands, comparing battery chemistries, and negotiating on price, one piece of paper decides whether your solar installation is actually legal, insurable, and safe: the Certificate of Compliance (CoC). It's the single most under-discussed part of a solar quote, and it's the first thing that should be on the table before you sign anything.
What a Certificate of Compliance Actually Covers
A CoC is issued by a registered electrician confirming that an electrical installation — including the solar and battery wiring, not just your home's existing wiring — meets South Africa's wiring regulations. For solar specifically, that includes correct isolation switches, earthing, cable sizing, and DC/AC combiner and inverter installation, done in a way that a qualified third party has signed off on.
It is not the same thing as an installer's own invoice, a warranty card, or a "job complete" sign-off from the sales team. It has to come from someone registered to issue it, and it has to reflect the installation as actually built — not a generic template.
Why Skipping It (Or Getting a Rubber-Stamped One) Is a Real Risk
Three consequences show up if your solar installation doesn't have a proper CoC, or has one that wasn't genuinely inspected:
- Insurance claims can be declined. If a fire, surge, or other incident traces back to the electrical installation and there's no valid CoC covering the solar addition, insurers have grounds to reject the claim entirely — at exactly the moment you need cover most.
- Resale becomes harder. Buyers and bond originators increasingly ask for a CoC covering any solar installation as standard due diligence on a property sale. Without one, you may need to pay for a retrospective inspection, and any defects found become your problem to fix before the sale can close.
- Safety risk is real, not theoretical. Incorrectly installed DC wiring and isolation switches are a genuine fire and shock hazard. The CoC process exists specifically to catch the mistakes that aren't visible just by looking at a neatly mounted panel array.
What to Check Before You Accept One
When your installer hands over a Certificate of Compliance, it's worth actually checking it rather than filing it away:
- Confirm the registration details of the electrician who signed it are current and match the name on the certificate
- Confirm the certificate explicitly references the solar/battery installation, not just the pre-existing home wiring
- Keep a copy separate from your installer's paperwork — you'll want it for insurance, resale, and warranty claims independently of the company that installed the system
If an installer is reluctant to provide one, treats it as an optional add-on, or can't clearly explain who will be issuing it before work starts, that's a signal to get a second quote.
This Is a Different Check to Vetting the Company Itself
Checking a company's track record, reviews, and registration is a separate (and equally important) step — we cover that ground on our sister directory, ADEO, where every listed installer is vetted before appearing. This article covers the document itself: the specific piece of paper that protects you regardless of how reputable the installer appeared going in.
Before you get quotes, it's worth running your own numbers through our solar calculator so you have an independent baseline for system size and cost — then ask every installer you shortlist, in writing, who will issue your Certificate of Compliance and when.
Frequently Asked Questions
Does every solar installation legally need a Certificate of Compliance? Any addition or change to a property's electrical installation, which a grid-tied or hybrid solar system is, should be certified by a registered person. Treat "no CoC needed for solar" as a claim worth verifying independently rather than accepting at face value.
Who is allowed to issue a CoC for a solar installation? A registered electrician with the appropriate registration to sign off electrical work, not necessarily the same person who physically installed your panels — some installer companies subcontract the compliance sign-off to a registered partner.
What if my installer already left and I never got a CoC? You can arrange an independent inspection and compliance certificate after the fact, though it typically costs more than getting it right during the original installation, and any non-compliant work found will need correcting first.
Writes about solar and renewable energy for South African homes and businesses at SolarTally, and cross-checks every guide against current tariffs and installer standards.
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