Solar warranty terms India — panel, inverter, battery, workmanship, insurance full guide

**Warranty basics — 2 types every component has:** Product warranty (manufacturing defect coverage, free replacement) + Performance warranty (specified output guarantee over time). Both separate, both important.

**Panel product warranty:** 12-15 years standard. Waaree Aditya 15yr, Vikram SOMERA 15yr, Adani Elan 12yr, TATA Power Solar 12yr, Longi 15yr, JA Solar 12yr. Covers material defects, delamination, glass breakage (spontaneous), junction box failure.

**Panel performance warranty:** 25-30 years linear. Standard TOPCon warranty — year 1 max 1% loss, year 2-30 max 0.4%/year, year 30 output ≥88%. Mono PERC — year 1 max 2%, year 2-25 max 0.55%, year 25 ≥84.8%.

**How performance claim works:** manufacturer supplies IV curve tester + trained technician. Actual output vs warranty curve compare. Below spec → free replacement panel(s) shipped. Installation labour usually customer bears (₹800-1,500 per panel).

**Inverter warranty tiers:** Standard 5 years (Deye, Growatt, Solis default). Extended 10 years (₹8k-15k extra one-time, Sungrow / SolarEdge). Microinverter 25 years (Enphase, expensive ₹4-5k/panel).

**Inverter — what's covered:** PCB failure, MOSFET/IGBT damage, capacitor failure, firmware issues, display module, cooling fans. NOT covered: power surge (need SPD — Surge Protection Device), water ingress from wrong install, rodent damage, user tampering.

**Battery warranty structure:** Lithium (LFP) — 10 years OR 6,000 cycles at 80% DoD (whichever earlier). Pylontech, Livoltek, Exide LiFE standard. Warranty degradation curve — year 10 min 70% original capacity guaranteed. Lead-acid — 2 years full + 3 years pro-rata (year 5 replacement cost 40% still borne by customer typically).

**Workmanship warranty (installer side):** industry standard 5 years. SVN 5-year workmanship covers: mounting structure integrity, cable connection tightness, waterproofing at roof penetrations, earthing continuity, junction box seal, monitoring hardware. Free labour for defect rectification.

**Extended AMC (post-workmanship period):** year 6+ typically ₹4,000-8,000/year for 3-10 kW residential. Includes quarterly cleaning, annual thermal imaging, inverter firmware update, output report, minor part replacement (fuses, connectors).

**Complete list — what's NOT covered under any warranty:** (1) Physical damage from external cause (falling coconut, cricket ball, storm debris, rat cable chewing). (2) Lightning strike (unless surge protector installed, and even then partial). (3) Vandalism or theft. (4) Force majeure (cyclone, earthquake, flood). (5) Unauthorized modification (customer/electrician tampering voids). (6) Deliberate short circuit or over-load. (7) Cosmetic wear (frame scratches, discoloration).

**Solar insurance — the missing piece:** covers what warranty doesn't. Premium ₹2,500-6,000/year for 5-10 kW residential (Bajaj Allianz, ICICI Lombard, TATA AIG). Coverage: full replacement value against theft, fire, storm, malicious damage, third-party liability (system falling on neighbor's car etc.). Claim process 15-30 days documented.

**Insurance ROI math:** 5 kW system ₹3L value. Annual premium ₹3,500. Zero-claim discount year 3+ → ₹2,800. 10-year cost ₹32k. One panel replacement claim ₹18k covers 5 years premium. Worth-it if you're in coastal / high-theft / high-monkey area.

**Warranty claim best practices:** (1) Keep original invoice + serial number sheet + install commissioning report. (2) Photograph installation on completion day (protects against modification claims). (3) Monthly generation log — attach as proof for performance claims. (4) Any issue — email vendor + manufacturer both, get ticket ID within 48 hours.

**Red flags in vendor quotes:** (1) 'Lifetime warranty' claim — vague, unenforceable, avoid. (2) Verbal-only warranty commitments — get in writing. (3) 'Combined 25-year warranty' phrasing — usually only panel; inverter separate 5 years. (4) No workmanship warranty specified — walk away.

**SVN warranty structure summary:** panel 25yr performance / 15yr product manufacturer-direct. Inverter 5yr / 10yr extended option. Battery 10yr. Workmanship 5yr from install date. Free AMC first year. Post-year 5 AMC contract ₹4,500/year residential. All warranty registrations SVN-handled with manufacturers within 30 days of install.