What Warranties Should a Solar System Include?
A complete solar proposal should explain more than the length of the solar-panel warranty. It should identify the warranties for the panels, inverter, mounting system, workmanship, electrical installation, monitoring equipment, battery where applicable and any roof-related work. Each warranty should state who provides it, what it covers, what is excluded and who pays for labour, transport and replacement work.
Which Warranties Should a Solar System Include?
A solar installation contains products from different manufacturers and installation work performed by the appointed provider. This means the system is usually protected by several separate warranties rather than one single warranty covering everything.
Equipment Warranties
Cover specified manufacturing defects in panels, inverters, batteries, mounting components and selected electrical equipment.
Performance Warranties
Describe the permitted long-term decline in panel output under the manufacturer’s stated conditions.
Workmanship Warranty
Covers specified defects caused by installation work, wiring, mounting, sealing or other contractor workmanship.
Service and Support Terms
Explain monitoring assistance, fault response, warranty-claim coordination and charges not covered by product warranties.
1. What Should the Solar-Panel Product Warranty Cover?
The solar-panel product warranty generally addresses defects in materials or manufacturing. It is different from the panel performance warranty.
- Manufacturing defects
- Defective junction boxes
- Frame defects
- Premature material failure
- Specified glass defects
- Specified backsheet defects
- Specified connector defects
- Abnormal delamination
- Specified moisture-entry defects
- Defective factory assembly
- Claim documentation requirements
- Product serial-number requirements
- Inspection requirements
- Replacement or repair options
- Transport responsibility
- Labour exclusions or coverage
2. What Is a Solar-Panel Performance Warranty?
A performance warranty states how much output a solar panel is expected to retain over time under the manufacturer’s stated testing and warranty conditions.
| Product Warranty | Performance Warranty |
|---|---|
| Addresses defects in the physical product | Addresses permitted decline in panel output over time |
| May cover defective materials or manufacturing | May require measured output below the stated warranty curve |
| Does not necessarily guarantee system energy generation | Does not guarantee the building’s annual solar savings |
| May provide repair, replacement or another stated remedy | May provide replacement, additional capacity or another remedy |
3. What Should the Inverter Warranty Include?
The inverter converts solar DC electricity into usable AC electricity and manages important monitoring, safety and grid functions. Its warranty should be reviewed separately from the panel warranty.
- Warranty duration
- Covered inverter components
- Factory defects
- Internal electronic failures
- Communication-module coverage
- Display or interface coverage
- Cooling-system coverage
- Repair or replacement procedure
- Replacement-unit availability
- On-site labour coverage
- Removal and reinstallation costs
- Transport charges
- Firmware-support conditions
- Monitoring-access support
- Warranty-extension options
- Environmental exclusions
4. What Should the Mounting-System Warranty Cover?
The mounting system includes rails, brackets, clamps, anchors and other components used to secure the panels to the roof or supporting structure.
Material Defects
Covers specified defects in mounting components supplied by the manufacturer.
Corrosion Terms
Explains coverage and exclusions for corrosion under stated environmental conditions.
Structural Compatibility
Clarifies whether components are warranted only when installed according to the approved design and fixing method.
Fasteners and Clamps
Identifies whether specified fixing components are included in the warranty.
5. What Should the Workmanship and Installation Warranty Cover?
The workmanship warranty is normally provided by the installer and covers specified defects caused by installation work rather than manufacturing defects in the equipment.
- Incorrect panel installation
- Incorrect clamp placement
- Loose mounting components
- Incorrect cable support
- Loose electrical terminations
- Incorrect connector assembly
- Incorrect equipment mounting
- Incorrect labelling
- Defective sealing work
- Installation-related water entry
- Incorrect switchboard modification
- Improper earthing or bonding work
- Installation-related system faults
- Repair labour
- Retesting after repair
- Written defect-reporting process
6. Should Roof-Leak or Roof-Work Coverage Be Included?
Where the solar installation involves roof penetrations, removal of roof materials, waterproofing work or modification of roof sheets, the proposal should explain responsibility for installation-related roof leaks.
7. What Should a Solar-Battery Warranty Include?
A battery warranty should be reviewed in terms of time, usable energy, operating cycles, retained capacity and permitted operating conditions.
| Battery Warranty Item | What Should Be Checked? |
|---|---|
| Warranty Period | The number of years covered from commissioning or registration |
| Cycle Limit | Whether coverage ends after a specified number of charge cycles |
| Energy Throughput | Whether coverage is limited by total energy charged or discharged |
| Capacity Retention | The minimum usable capacity promised at a stated point |
| Operating Conditions | Temperature, ventilation, charging limits and approved system use |
| Replacement Remedy | Repair, replacement, refurbished unit or another stated remedy |
- Battery-module coverage
- Battery-management-system coverage
- Control-unit coverage
- Communication-equipment coverage
- Usable-capacity definition
- Capacity-retention threshold
- Cycle-count limit
- Energy-throughput limit
- Temperature requirements
- Installation-location requirements
- Internet-connectivity requirements
- Software-update requirements
- Labour coverage
- Transport coverage
- Replacement-unit terms
- Emergency-support process
8. Should Monitoring and Communication Equipment Be Covered?
Monitoring hardware and communication services are important for detecting faults and reviewing performance. Their support terms should be stated separately.
- Data-logger warranty
- Communication-gateway warranty
- Meter warranty
- Sensor warranty
- Monitoring-platform access
- Customer-account setup
- Inverter communication support
- Internet-connection responsibility
- SIM-card or data charges
- Cloud-platform subscription terms
- Software-support period
- Data-storage period
- Alarm-notification support
- Replacement-hardware charges
- Remote troubleshooting
- On-site communication repair
9. Which Other Equipment Warranties May Be Relevant?
DC and AC Isolators
Review coverage for switch defects, enclosure problems and other specified failures.
Protection Devices
Check warranties for breakers, fuses, surge-protection devices and related equipment.
Optimisers or Microinverters
Confirm warranty duration, labour support and access costs for roof-mounted electronics.
Energy Meters
Review product, communication and calibration-related support where applicable.
How Should a Solar Warranty Claim Work?
Report the Problem
The owner provides system details, photographs, alarm records and a description of the issue.
Complete Initial Diagnosis
The provider reviews monitoring data and determines whether a site inspection is required.
Inspect and Test
The affected equipment or installation work is checked and the cause is documented.
Submit the Claim
Required photographs, serial numbers, test results and purchase records are sent to the responsible warranty provider.
Repair or Replace
The approved remedy is completed, subject to product availability and the warranty decision.
Retest and Close
The system is tested again and the maintenance and warranty records are updated.
Which Warranty-Related Costs Should Be Clarified?
- Fault-diagnosis fee
- Site-attendance fee
- Technician labour
- Equipment-removal labour
- Replacement-installation labour
- Testing and recommissioning
- Transport and delivery
- Crane or lifting equipment
- Scaffolding
- Rope-access work
- Roof-access equipment
- Factory-shutdown costs
- Temporary safety controls
- Return of defective equipment
- Replacement consumables
- Travel outside the service area
What Is Commonly Excluded from Solar Warranties?
- Normal wear and ageing
- Expected panel degradation
- Incorrect maintenance
- Unauthorised repairs
- Unauthorised system modification
- Damage by third parties
- Damage caused by pests
- Impact damage
- Fire or flooding
- Lightning or severe weather
- Grid-voltage disturbances
- Internet-service failure
- Failure to follow product instructions
- Use outside approved conditions
- Pre-existing roof defects
- Business-interruption losses
How Should Solar Warranty Packages Be Compared?
| Warranty Item | Less Clear Offer | More Complete Offer |
|---|---|---|
| Panel Product Warranty | Warranty years stated only | Coverage, exclusions, claim process and labour responsibility stated |
| Panel Performance Warranty | Long term mentioned without degradation curve | Annual degradation and end-of-term output clearly shown |
| Inverter Warranty | Manufacturer warranty mentioned generally | On-site support, replacement process and extension options stated |
| Workmanship Warranty | No written defect list | Covered installation defects and response process defined |
| Roof Coverage | Verbal assurance only | Installation-related leak coverage and exclusions documented |
| Claim Labour | Not discussed | Diagnosis, removal, installation and retesting costs explained |
| Warranty Support | Owner contacts each manufacturer | Installer coordinates claims and maintains asset records |
What Is the Difference Between Solar100 and a Solar Provider?
| Solar100 | Solar Provider or Installer |
|---|---|
| Explains common solar warranty categories | Provides the project-specific equipment and installation warranties |
| Highlights common exclusions and claim costs | Explains the written terms of the selected products and installation |
| Helps users compare participating providers | Registers equipment and maintains project warranty records |
| Does not manufacture or warrant solar equipment | Coordinates with manufacturers, distributors and service teams |
| Does not inspect or approve warranty claims | Diagnoses faults and submits supporting claim information |
| Does not guarantee claim approval | Provides contractual responsibilities according to the agreement |
What Should You Ask before Accepting a Solar Warranty Package?
- Who provides each warranty?
- How long is the solar-panel product warranty?
- What panel defects are covered?
- What is the panel degradation schedule?
- What output level is warranted at the end of the term?
- How long is the inverter warranty?
- Is the inverter warranty on-site or return-to-base?
- Is inverter labour included?
- How long is the mounting-system warranty?
- How long is the workmanship warranty?
- Which installation defects are covered?
- Is installation-related roof leakage covered?
- What battery warranty limits apply?
- Are monitoring hardware and platform access covered?
- Who submits manufacturer warranty claims?
- Who pays for site attendance?
- Who pays for removal and reinstallation?
- Are transport and access-equipment costs included?
- Can the warranties be transferred to a new owner?
- What actions can invalidate the warranties?
What Documents Should Be Kept for Future Warranty Claims?
- Signed solar contract
- Final quotation
- Equipment datasheets
- Panel warranty certificate
- Inverter warranty certificate
- Battery warranty certificate
- Mounting warranty documents
- Workmanship warranty terms
- Equipment serial-number records
- Commissioning report
- Electrical test results
- Panel-layout drawing
- Single-line diagram
- Roof-condition photographs
- Installation photographs
- Maintenance reports
- Monitoring records
- Repair and replacement records
Frequently Asked Questions
What are the main warranties for a solar system?
The main warranties usually include panel product, panel performance, inverter, mounting-system and workmanship warranties.
Is a solar-panel product warranty the same as a performance warranty?
No. The product warranty addresses specified physical defects, while the performance warranty addresses permitted output decline over time.
Does a product warranty include installation labour?
Not always. Labour, transport, access equipment, removal and reinstallation may be excluded unless stated in writing.
Should solar workmanship have a separate warranty?
Yes. The workmanship warranty should cover specified defects caused by installation work rather than equipment manufacturing.
Does a solar warranty cover roof leaks?
Only when the written terms include installation-related roof-leak or waterproofing coverage. Existing roof defects may be excluded.
Who handles a solar warranty claim?
The process depends on the agreement. The installer may coordinate the claim, or the owner may need to contact the manufacturer directly.
Compare Solar-System Warranties before You Sign
Send your solar quotation, panel model, inverter model, battery details, workmanship terms and warranty documents to compare the proposed coverage from participating solar providers.
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