Every brand's warranty, read from the document
19solar brands. For each one: the term, what has to stay true to keep it, who registers, and what the claim needs. Every page prints the day somebody read the manufacturer's own document.
Checked 16 August 2026
Solar warranties are mostly not deadlines
Of the 19 brands here, 3 have a dated registration window. The rest have conditions: things that have to be true for the long term to hold, usually with no clock attached, and nothing tells you when one stops being true. GoodWe is 10 years only while the inverter is connected to SEMS, otherwise five. Tesla is 10 only while the Powerwall is online, otherwise four.
- 19
- Brands checked
- 3
- With a dated window
- 11
- With conditions to confirm
- 4
- That pay toward labour
The ones with a real clock
Three brands out of nineteen have a dated registration window. These are the only ones where a countdown is honest.
EG4
Inverter · Battery
EG4's current inverters and batteries carry 10 year terms. EG4 asks for registration within the first year of purchase, with proof of purchase from an authorised distributor accepted as the fallback.
Silfab
Solar panel
Silfab's product warranty is 12 years from delivery, extended to 25 years when the installation, site and product details are registered through Silfab's portal within 180 days of purchase. The performance warranty runs 30 years either way.
Fronius
Inverter
Fronius gives 10 years on its inverters through Warranty Plus, free but not automatic: the unit has to be registered in Solar.web within 30 months of delivery ex works. Registering also moves the start of cover from delivery to commissioning.
Every brand, side by side
Parts and labour are the longest term across each brand's product lines. Labour is almost always none, which is the point of the column.
| Brand | Parts | Labour | To keep the full term | Route |
|---|---|---|---|---|
SolarEdge | 12 years | None | 1 condition to confirm | Verify |
Enphase | 25 years | None | 1 condition to confirm | Verify |
Tesla | 10 years | None | 2 conditions to confirm | Verify |
SMA | 10 years | None | 1 condition to confirm | Register |
EG4 | 10 years | None | 1 year to register | Register |
Silfab | 12 or 25 years | None | 180 days to register | Register |
Q CELLS | 25 years | None | Nothing to register | Register |
Alpha ESS | 5 or 10 years | None | 1 condition to confirm | Register |
BYD | 10 years | None | 1 condition to confirm | Register |
Canadian Solar | 25 years | None | Nothing to register | Register |
FranklinWH | 15 years | None | 1 condition to confirm | Register |
Fronius | 10 years | 1 year | 30 months to register | Register |
GoodWe | 10 years | 1 year | 2 conditions to confirm | Register |
Jinko Solar | 30 years | None | Nothing to register | Register |
LONGi | 25 years | None | Nothing to register | Register |
REC Solar | 25 years | 20 years | 2 conditions to confirm | Register |
Sol-Ark | 10 years | None | 1 condition to confirm | Register |
Sungrow | 10 years | 1 year | Nothing to register | Verify |
Trina Solar | 25 years | None | Nothing to register | Register |
Claim Timer already holds these terms
One record per piece of equipment, with the serial, the nameplate photo and each brand's conditions on it. Put your next install in and the claim is built before the part fails.