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review.solar · Warranty summary
ESA G20
5–48 kWh · LFP · All-in-one · Single-phase
GoodWe
10-year product warrantyAustralia
Reviewed 2026-06 · Document Current (as at 2026-06)
43/100
Limited
Guarantee & backbone
About this document
review.solar’s plain-language summary of the manufacturer’s warranty terms as at the review date. Not a legal instrument: verify current terms with the manufacturer before making a claim.
10yr
Warranty period
70%
Capacity at end of term
Parts only
Coverage

Capacity guarantee: minimum retained at year 10

60708090100Rated capacity 100%Guaranteed floor 70.0%70.0%0yr2yr4yr6yr8yr10yr
Rated capacity (reference)Guaranteed floor: 70.0% at yr 10

No year-by-year capacity schedule is published for this product - the manufacturer guarantees only this end-of-term minimum, not a specific decline curve.

The guarantee
  • 10-year product warranty
  • Capacity retention guarantee
  • Defects in materials and workmanship
  • Battery capacity retention
  • Replacement parts
What voids or limits it
  • Labour and removal costs
  • Unauthorised installation or modification
  • Physical damage, misuse, or neglect
  • Normal wear and degradation within tolerance
  • Failure to register
  • Grid events and external factors
How to claim
Contact your authorised GoodWe installer or GoodWe Australia via goodwe.com.au, with proof of purchase, system serial number, installation date and installer details. Full summary, conditions and sources: page 2.
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Page 2 · Complete warranty summaryGoodWe ESA All-in-One
Warranty period
10-year product warranty
Covers the system: power module (inverter) and battery modules: against defects in materials and workmanship for 10 years from installation. Conditional on installation by an authorised installer and registration with GoodWe via SEMS or SolarGo within the required period.
Capacity retention guarantee
Guarantees at least 70% of rated usable capacity at the end of the 10-year period under normal operating conditions and specified cycle usage; degradation beyond that threshold qualifies for remedy. Contingent on use within the rated temperature range and compliance with installation requirements.
What’s covered
Defects in materials and workmanship
Covers manufacturing defects in materials or workmanship in the power module (inverter), battery modules and integrated BMS under normal operating conditions. Remedy: repair or replacement of the defective unit or component at GoodWe's sole discretion.
Battery capacity retention
A minimum 70% retained usable capacity is warranted across the 10-year term; below that under normal use, GoodWe repairs or replaces the affected module. Applies to beginning-of-life usable capacity as defined in the datasheet, subject to the module specification's cycle-life conditions.
Replacement parts
Replacements may be remanufactured or equivalent units at GoodWe's discretion, warranted for the remainder of the original term or 12 months from replacement, whichever is longer.
Exclusions
Labour and removal costs: Removal, re-installation, and labour for returning or replacing the unit are not covered: the customer or installer bears all such costs.
Unauthorised installation or modification: Void if installed by anyone other than a licensed electrician or authorised GoodWe installer, or if hardware or software is modified outside GoodWe's published specifications.
Physical damage, misuse, or neglect: Excludes damage from accident, misuse, abuse, neglect, flooding, fire, lightning or other external causes, including operation outside specified voltage, temperature or humidity ranges.
Normal wear and degradation within tolerance: Gradual capacity fade that remains above the 70% retention threshold is considered normal battery degradation and is not covered as a warranty defect.
Failure to register: Coverage may be limited or voided if the system is not registered with GoodWe via SEMS or SolarGo within the specified window after installation.
Grid events and external factors: Excludes damage or reduced performance from grid instability, overvoltage events, or other causes external to the unit and beyond GoodWe's control.
Transferability
Not transferable to a subsequent property owner. If the property is sold the warranty does not pass to the new owner: coverage ceases on change of ownership.
How to make a claim
Contact your authorised GoodWe installer or GoodWe Australia via goodwe.com.au, with proof of purchase, system serial number, installation date and installer details. Remote SEMS diagnostics may be requested before a field replacement is approved. Claims must be submitted within the warranty period.
Source reference
DocumentGoodWe ESA Series Warranty Statement
Version at auditCurrent (as at 2026-06)
Sourced byreview.solar, 2026-06
Manufacturergoodwe.com.au

review.solar · complete warranty summary · review.solar/warranties/goodwe-technologies-co-ltd-goodwe-esa-all-in-one-home-energy · © Solar Analytica 2026