Sigenergy
Lacks transparency. Publishes some details, but doesn't show its workers are paid and treated fairly.
Last researched 1 November 2026 · 7 sources
Shanghai maker of stackable home batteries and hybrid solar inverters.
There's no proof Sigenergy pays more than the legal minimum, which in China is below a living wage, and it has no full independent audit.
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Why it's graded Lacks transparency
- Not met: Meets 1 of 6 Good requirements.
- Holds the grade back: It has 3 red flags: no evidence of a living wage, a hidden, unaudited supply chain in high-risk countries and battery metals it can't trace to the mine. Two or more red flags means a poor grade.
- It isn't Harm on record, because there's no serious confirmed problem on its record.
- Lacks transparency is still a poor grade: in supply chains like this, workers who can't be seen to be treated fairly are usually underpaid or unprotected.
Good requirements 1 of 6
- Not met: Pays a living wage, or holds a strong fair-pay certificationLiving wage: no evidence
- Not met: Respects worker rightsMost of its products are made in China, where unions are heavily restricted, and it has no full supply chain audit.
- Not met: Supply chain independently audited or certified, or at least 80% made in countries with strong labour standards
- Met: No child or forced labour findings or links
- Not met: Names the factories or farms that make its products, or is fully certified by a scheme that holds and audits that list
- Not met: Traces the silicon in its panels to the smelter or quartz mine, outside Xinjiang (for batteries and inverters: traces its battery metals to the mine)
Red flags 3
- Red flag: No evidence it pays a living wage
- Red flag: Hidden supply chain, mostly in countries with poor worker rights
- Red flag: Relies on battery metals it can't trace to the mineShown to explain the grade. It isn't one of the 2 red flags that set it.
- Red flag: Fails its category's raw-material check (means Lacks transparency)
Stars it would earn as Good
None yet. Stars only show on Good companies. About stars
Where it's made
From press and retailer reports; Sigenergy doesn't say where its products are made.
| Country | Worker rights | Legal minimum wage | Forced labour risk |
|---|---|---|---|
| China | No guarantee of rights | Below a living wage | Moderate |
Evidence
What we found
- Risk across the industry, not a finding about this company: battery cells and inverters rely on cobalt, lithium, graphite and nickel from mines and refineries linked to child and forced labour in DR Congo, Indonesia and Xinjiang.
- Sells no crystalline-silicon solar panels (batteries, inverters or thin-film panels only)
- Relies on cobalt, lithium, graphite and nickel from mines and refineries linked to child and forced labour in DR Congo, Indonesia and Xinjiang. It hasn't shown any steps to trace the metals in its batteries to the mine, so it's graded Lacks transparency until it does.
Research notes Sigenergy makes its SigenStor batteries and inverters at three production bases in China (Lingang and Jinqiao in Shanghai, and Nantong), using lithium iron phosphate cells, which contain no cobalt or nickel, from a cell maker it does not name. It publishes no supplier list, no smelter or refiner list for lithium or graphite, no audit results and no Australian modern slavery statement, even though it became Australia's biggest home battery brand in 2025. No labour abuses involving Sigenergy or its suppliers have been reported.
What independent sources say
| Source | Result | Details |
|---|---|---|
| Australian Modern Slavery Register | Not listed | No modern slavery statement from Sigenergy is on the Australian register (checked November 2026). View |
| US forced-labour import bans (UFLPA Entity List, CBP Withhold Release Orders) | Not listed | Sigenergy is not on the UFLPA Entity List (29 October 2026 edition). View |
| US Department of Labor goods lists | Listed | The US Department of Labor's 2024 list names Chinese lithium-ion batteries as made with child-labour inputs, and Zimbabwean lithium as made with child labour. View |
Sources and actions
Sources 7
Show all 7 sources
- Australian Modern Slavery Register search: Sigenergy · search the archive · No statements found
- DHS announces addition of 37 PRC-based companies to UFLPA Entity List (2025) · search the archive · UFLPA Entity List additions; Sigenergy not among them
- List of Goods Produced by Child Labor or Forced Labor (US Department of Labor, 2024) · search the archive · Chinese lithium-ion batteries listed for child-labour inputs; Zimbabwean lithium for child labour
- Sigenergy lists on Hong Kong Stock Exchange, raises HK$4.4 billion (Energy-Storage.news, 2026) · search the archive · Three production bases in Lingang, Nantong and Jinqiao, mainly making inverters and storage batteries; led distributed storage market share in Australia in 2025 (SunWiz)
- Chinesischer Batteriespezialist Sigenergy geht an die Börse (Solarserver, 2026) · search the archive · Three production facilities in China, new factory in Nantong; capacity 360,000 inverters and over 5.6 GWh of storage at end of 2025
- SigenStor battery datasheet (Sigenergy, via Solarproof) · search the archive · SigenStor BAT 6.0 and 10.0 use LiFePO4 (LFP) cells; cell maker not named
- Sigenergy review (SolarQuotes) · search the archive · LFP cells; battery plant in Lin-gang, Shanghai; Sydney office; sold in Australia since 2023
Company details
- Headquarters
- China
- Last researched
- 1 November 2026
- Cite this page
- Labour Lens, "Is Sigenergy ethical? Labour rating", https://www.labourlens.net/brand/sigenergy, last researched 1 November 2026, accessed [date].
- Method
- Researched with AI assistance against published rules. How we check · What Lacks transparency means
Other home batteries brands
Nothing we've rated in home batteries is better than Lacks transparency yet.
Something missing or wrong?
Grades are opinions based on the evidence listed here. Send us evidence, or a right of reply if you represent Sigenergy.