Solar warranty registration: who actually has to do it

Across the nineteen manufacturers in this catalogue, registration is the installer's job on fifteen brands and happens automatically at commissioning on four. On none of them is it the homeowner's job. That is good news with a catch: a task nobody hands to you is a task you cannot confirm was done. Your job is verifying it happened, not doing it.

The three routes

Each route fails in a different way, so it is worth knowing which one applies to the gear on your roof.

Route one: the installer registers it

This is most of the market. Fifteen of nineteen brands.

Examples, with the date we read each document:

• Fronius needs the inverter registered in Solar.web within 30 months of delivery ex works for the free ten year Warranty Plus. Registering also moves the start of cover from delivery to commissioning. Checked 28 July 2026.
• Silfab extends the product warranty from 12 years to 25 when the installation, site and product details are registered through its portal within 180 days of purchase. Checked 16 August 2026.
• REC offers ProTrust only where an REC Certified Solar Professional installed the system and registered the installation in ProPortal or the SunSnap app. No deadline is published. Checked 30 July 2026.
• GoodWe makes the ten year term conditional on the inverter being connected to the SEMS portal and uploading data, and on both serials being registered where a Lynx battery is fitted. Otherwise five years. Checked 28 July 2026.
• EG4 asks for registration within the first year of purchase, with proof of purchase from an authorised distributor accepted as the fallback. Checked 16 August 2026.
• SMA uses registration in its Online Service Center to attach the warranty record to the unit and to open the door to paid extensions later. No dated deadline was found. Checked 16 August 2026.

How this route fails. The person who has to do it is finishing your job and starting the next one. Registration is administrative work with no immediate consequence for skipping it, and nobody chases it. On brands like Silfab the consequence arrives 12 years later, on a Tuesday, when a panel fails and the term turns out to be shorter than the brochure said.

What you do about it. Ask for the confirmation. Not "did you register it", but "please send me the registration confirmation". A portal confirmation email is a document. Put it with your invoice.

Route two: it registers itself

Four brands here. The commissioning process or the monitoring platform creates the record without anybody filling in a form.

• Tesla: the Powerwall is registered with Tesla at commissioning. There is nothing to file afterwards.
• SolarEdge: the commissioning app registers it. The standard 12 year term needs nothing at all.
• Enphase: the system is activated in Enlighten at commissioning, and the 25 year IQ8 term applies from activation.
• Sungrow: registration is encouraged but not required. The ten year term runs from the installation date either way. EV chargers are the exception, and the installer registers those within a month.

How this route fails. It is convenient, and convenience is exactly why nobody checks. If a commissioning step was skipped, or the system was never activated, there is no missing form to notice. There is just an absence.

It also creates the other trap on this route: conditions that keep running after commissioning. Tesla's Powerwall needs to stay connected to the internet for the whole decade. If the connection drops and is not restored within 45 days of Tesla's written request, cover ends at 48 months rather than ten years. Registration was never the risk on that brand. Staying online is.

What you do about it. Get owner access to the monitoring account and check the system is actually there and reporting. On Enphase, confirm activation happened, because the 25 years runs from activation rather than from install.

Route three: you register it

Zero brands in this catalogue.

We are naming that plainly because the opposite is repeated everywhere. There is a widely held belief that solar warranty registration is a homeowner chore with a 30 day deadline attached, and across nineteen manufacturers whose documents we have read, it is not.

That is a statement about these nineteen brands, on the dates we read their documents, in the markets we read them for. It is not a statement about every product on earth. If a manufacturer or an installer tells you to register something yourself, do it, and keep the confirmation. Just do not assume the obligation exists because someone on the internet said so.

Only three brands have a real deadline

Of the nineteen, three carry a dated countdown:

Everything else has either nothing to register or something to keep true. If you want the exact date for your install, the warranty deadline calculator takes a brand and an install date and gives you the deadline and the portal link.

Conditions are the bigger risk than deadlines

This is the finding that surprised us most when we read the documents.

Deadlines are rare. Conditions are everywhere, and they mostly have no clock attached at all. A condition is something that has to stay true for the long term to hold.

• GoodWe: connected to SEMS and uploading data. Otherwise ten years becomes five.
• Tesla: the Powerwall stays online. Otherwise ten years becomes four.
• REC: a certified installer registered the installation. Otherwise ProTrust does not exist.
• Alpha ESS: the paid extension to ten years is bought within 30 days of installation. Otherwise standard cover is five years.
• Sol-Ark: coverage terms differ between professional and owner installs, so who installed it is part of the record.

Nobody notifies you when one of these breaks. There is no letter. The system carries on generating and the warranty is quietly shorter than you think.

Some brands have nothing to register, and the paperwork is the whole job

BYD has no registration at all. What it has instead is a start date that depends on a document: with written proof of delivery the ten years starts 30 days after delivery, and without one it starts six months after production, which is usually earlier and costs you cover.

Jinko, Trina, LONGi and Canadian Solar are the same shape. Nothing to file. Keep the invoice, the delivery date and the serials with the job and you are done.

For these brands, the paperwork is not admin around the warranty. It is the warranty.

What to do, in order

1. Work out which brands are on your roof. Panels, inverter, battery. They are on the contract and on the labels.
2. Ask your installer for the registration confirmations, in writing, for anything on the installer route. Ask at handover if you still can.
3. Get owner access to any monitoring account and confirm the system is there and reporting.
4. Check whether your brands have a live condition, not just a deadline. The brand pages at panel warranties, inverter warranties and battery warranties list them with the source document and the date it was read.
5. File everything in one place. Invoice, contract, install date, serial photographs, registration confirmations.

Registration is not your job. Proving it happened is, because in ten years you are the only person who will still care.