Guides
What a solar warranty actually covers
Three separate warranties, and people conflate them. The panel product warranty covers manufacturing defects, typically around a decade. The performance warranty guarantees a percentage of original output at year twenty-five. The inverter's is much shorter, and workmanship is the installer's own — the one you will actually use.
Last reviewed
Product against performance
A product warranty covers a panel that fails or delaminates. A performance warranty is a promise about gradual output decline — typically that the panel still produces above a stated percentage at year twenty-five. They are different documents with different durations, and a supplier quoting only 'twenty-five year warranty' is usually referring to the performance one.
The inverter is the short one
Inverters carry substantially shorter warranties than panels, often extendable at cost, and they are the component most likely to need attention within the system's life. Any payback calculation that assumes no inverter spend across twenty-five years is optimistic. Budget for it rather than being surprised by it.
Whether a warranty is claimable here
A twenty-five year warranty from a manufacturer with no presence in Pakistan is a marketing line rather than a term you can enforce. Ask who handles a claim locally, what the process is, and whether anyone has actually completed one. This matters far more than the number of years printed on the datasheet.
Workmanship, which is the one you will use
Most real problems in the first years are installation issues: a leak at a fixing, a connector that was not seated, a structure bolt working loose. Those are the installer's warranty, not the manufacturer's, and it should be written down with a duration and a scope. An installer who will not put it in writing is telling you something.
What warranty comes with solar panels in Pakistan?
Do I need to register the warranty?
Some manufacturers require registration within a window of installation, and missing it can weaken a claim. Ask at handover and keep the invoice, serial numbers and commissioning sheet together. A warranty claim years later depends on documentation you will not be able to reconstruct from memory.
What voids a solar warranty?
Typically unauthorised modification, damage from improper installation, and physical or environmental damage outside normal use. Cleaning with a pressure washer near the frame seals is a realistic way to cause damage that is then excluded. Read the exclusions once at purchase rather than discovering them during a claim.
Is an extended inverter warranty worth buying?
Often yes, because the inverter is the component most likely to need work and the extension is usually modest against the cost of a replacement. Weigh it against the unit's price and how central the system is to your household. For a hybrid system running a backed-up circuit daily, it is easier to justify.