Handover Documentation: What Does a Complete Solar Package Contain?
Published by Quinn Lai | By InverPower Technical Team
Published 22 August 2026 · Last updated 22 August 2026
DIRECT ANSWER
As-built drawings, the commissioning and test records, equipment warranty certificates with serial numbers, operation and maintenance manuals, and the licensee's approval and energisation documents. Final payment and warranty activation both depend on that set being complete, which is why it is assembled during construction rather than after it.
Handover documentation is treated as administration and behaves like commercial risk. It is the trigger for the last payment certificate, the evidence behind every warranty claim for the next twenty-five years, and the first thing anyone asks for when the building changes hands. An installation that works perfectly and cannot produce its paperwork is worth less than one that can.
The core set
As-built drawings first: the single-line as installed rather than as designed, the array layout with string numbers, the cable routes, and the position and rating of every isolator and protective device. If the installation deviated from the design — and it usually does, somewhere — the as-built is where that is recorded.
Then the commissioning and test records: the full sequence with measured values, string by string, with the conditions noted and the competent person's details on it. Then equipment documentation: warranty certificates, datasheets and the certification for modules and inverters, each tied to serial numbers that match what is physically installed.
Then the operating side: manuals, the monitoring account details in the client's name, the maintenance schedule with intervals, and a simple emergency procedure — how to shut the system down, what stays live, and who to call. That last page is the one that gets used, usually by somebody who was not at the handover meeting.
The approval documents
The licensee's paperwork is a separate strand and it belongs in the same file: the connection approval, the approved protection settings with the witnessed test record, the metering arrangements, and the programme documentation for whichever scheme the system is registered under. Where the installation is under Solar ATAP, the application was submitted through a registered service provider after commissioning, and the confirmation belongs in the pack rather than in an inbox.
Keep the correspondence too. Approvals arrive with conditions attached, and two years later nobody can remember what was agreed unless the letter is in the file.
Photographs belong in the file as well, and they cost nothing at the time. Cable routes before containment covers went on, fixings before the modules were laid over them, the board before the new breaker was fitted. Nobody wants them until somebody has to work out what is underneath something, and by then the only alternative is to take it apart.
Traceability is what makes the warranty real
A warranty certificate that does not tie to the equipment on the roof is a piece of paper. The chain a manufacturer will follow is serial number, to delivery note, to the authorised distributor, to the certificate — and the point where that chain breaks is where a claim gets refused.
That is a sourcing decision as much as a documentation one. Equipment bought through an official distributor arrives with traceable paperwork and a support route back to the manufacturer; equipment bought from a broker may not, and the difference only becomes visible under a claim. Record serial numbers as installed, module by module where the manufacturer requires it, and file the delivery notes with them.
The pack, and when each part is made
| Document | Prepared when | What it unlocks |
|---|---|---|
| As-built single-line and layout | Updated as work proceeds | Any future maintenance or extension |
| Commissioning test records | At commissioning | Energisation and the performance baseline |
| Protection settings and witness record | At commissioning | Licensee acceptance |
| Warranty certificates and serial numbers | As equipment is delivered | Every future claim |
| Product certification and datasheets | At procurement | Lender and insurer review |
| O&M manual and schedule | Before handover | The maintenance contract |
| Monitoring accounts in the client's name | At commissioning | Client access and alerting |
| Programme and connection approvals | As received | Metering and offset arrangements |
| Emergency shutdown procedure | Before handover | Safety of anyone on the roof |
Assemble it as you go
Everything in that table except the commissioning records exists before the last week of the project. The reason handover packs get scrambled together at the end is that nobody was made responsible for the file while the work was running, so delivery notes went into a van, serial numbers went onto a phone, and the as-built stayed a marked-up print in someone's bag.
Name an owner for the pack at the start, keep it as a live folder, and photograph serial numbers as equipment is installed rather than climbing back onto the roof for them. It costs a few minutes a week and it removes the most common cause of a delayed final payment.
Hand it over in a meeting rather than by email. Twenty minutes walking the client through the drawings, the monitoring login, the maintenance schedule and the shutdown procedure turns a folder into something they can use, and it is the last chance to find out that the person who will actually operate the system was never introduced to it.
The paperwork that arrives with the goods
InverPower is an official distributor for the brands we carry, so the documentation that goes into your handover pack comes with the goods: datasheets, certification, warranty terms and delivery documentation that ties serial numbers back to the manufacturer. Send the bill of materials and tell us what your client's pack has to contain, and we will make sure the paperwork arrives with the stock rather than after it.
Frequently Asked Questions
What documents does TNB require before a solar system can energise?
The connection approval and its conditions, evidence that the installation meets the technical requirements, the protection settings with the witnessed test record, and the metering arrangements — alongside the competent person's certification of the installation. Confirm the exact list for the connection type early, because it drives the programme.
What happens if the handover documentation is incomplete at final payment?
Payment is usually withheld, and reasonably so, because the client cannot operate, maintain or claim on an asset they have no records for. The more expensive consequence arrives later: a warranty claim that fails because serial numbers or delivery documentation cannot be produced.
Who keeps the handover pack?
The client, with the EPCC keeping a copy. It should be digital and complete rather than a folder on a shelf, because the people who need it — a new facilities manager, a buyer's technical adviser, the next contractor — will not be the people who received it.
Do serial numbers really need to be recorded module by module?
Where the manufacturer's warranty terms require it, yes, and most do for module claims. Recording them as installation proceeds takes minutes; reconstructing them afterwards means lifting modules. It is also what proves the goods on the roof are the goods that were bought.
Sources
- IEC — IEC 62446-1, Photovoltaic (PV) systems: requirements for testing, documentation and maintenance, including the required handover documentation — https://webstore.iec.ch
- Department of Standards Malaysia — MS 1837:2018, Installation of grid-connected photovoltaic (PV) system — https://www.jsm.gov.my
- TNB — connection requirements, metering and energisation documentation for distributed generation — https://www.tnb.com.my
- SEDA Malaysia — Solar ATAP programme application process through a registered PV service provider — https://www.seda.gov.my/reportal/atap/
- Electricity Supply Act 1990 (Act 447) and the Electricity Regulations 1994 — competent person certification of an installation — https://lom.agc.gov.my
About InverPower
InverPower is Malaysia's A–Z solar component distributor — Sungrow Preferred Distributor and Sunkean Sole Distributor — supplying EPCCs, installers, and government projects nationwide.
Explore the InverPower resource hub at inverpower.com.my
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- TNB Grid Code for Solar: What Must EPCCs Do Before Energization?
- Which Solar Inverters Are SEDA-Registered in Malaysia (2026)?
- Where Do EPCCs Source Solar PV Components in Malaysia?
