JA Solar vs Thornova - solar panel manufacturer comparison
JA Solar has the broader catalog (504 vs 0 models). JA Solar leans bifacial (47% of lineup).
Both catalogues are read from the manufacturers' own datasheets. A brand is not scored against the market here, only against the other brand on this page.
The two companies
JA Solar is a global leader in the manufacturing of high-performance photovoltaic products. Founded in 2005, the company designs, develops, manufactures, and sells solar cells and modules. JA Solar's products are used in ground-mounted power plants, commercial & industrial rooftop PV systems, and residential rooftop...
- Founded
- 2005
- Headquarters
- Beijing, China
- Annual capacity
- 100+ GW/year
- Employees
- 37,289
- Listed
- SZSE: 002459
- Tier 1 bankable
- Yes
Thornova Solar (formerly Sunova Solar) is a Chinese photovoltaic manufacturer headquartered in Wuxi, Jiangsu Province, specializing in high-efficiency TOPCon and PERC bifacial solar modules. The company operates manufacturing facilities in China and Indonesia with a combined module capacity of 6.5 GW and cell capacity...
- Founded
- 2016
- Headquarters
- Wuxi, China
- Annual capacity
- 5-10 GW/year
- Tier 1 bankable
- Yes
Catalogue against catalogue
An average over a catalogue describes the range a manufacturer publishes, not the module you would buy. A brand with two flagship panels and eighty older ones averages worse than one that has retired its back catalogue.
What each of them builds
JA Solar skews to higher efficiency: 15% of lineup is 23%+
JA Solar offers more 600W+ panels (14% of lineup)
Dominant cell tech: <strong>PERC</strong> (49%)
The flagships
Written summary
JA Solar is a Chinese manufacturer founded in 2005 and headquartered in Beijing, with global operations that have grown it into one of the largest module producers in the world. The company shipped approximately 79.4 GW of modules in 2024 and holds over 100 GW of total manufacturing capacity. It appears consistently on BloombergNEF's Tier 1 list and was recognized as a Tier 1 supplier by S&P Global Commodity Insights in 2025. Thornova Solar, by contrast, was founded in 2022 and is registered in Fremont, California, operating as an independent subsidiary of the Chinese firm Sunova Solar Technology. Its module production capacity stands at around 6.5 GW, with cell capacity reaching 11.5 GW across facilities in China and Indonesia. Thornova achieved BNEF Tier 1 status beginning in Q3 2023 and has maintained that standing since. JA Solar holds a significantly larger institutional footprint, measured by shipment volume, market reach, and years of bankability track record.
JA Solar's current catalog is built primarily around n-type TOPCon technology, anchored by the Deep Blue 4.0 Pro series. These modules target the full range of applications - premium residential rooftops, commercial arrays, and large utility-scale ground mounts - at competitive price points. Thornova structures its lineup around two main families: the Zosma series, which uses PERC cell technology and is positioned as a cost-accessible option, and the Tangra series, which uses n-type cell technology and targets buyers seeking higher efficiency in residential, commercial and industrial, and utility applications. The Tangra M PRO earned recognition as an "Overall Highest Achiever" in the RETC PV Module Index, and Thornova received a Kiwa PVEL 2025 Top Performer award.
For a typical buyer in 2025, JA Solar is the lower-risk default - its scale, multi-decade warranty track record, and depth of third-party certifications reduce long-term uncertainty. Thornova is a credible and bankable alternative, particularly for North American buyers seeking competitive bifacial pricing, but its shorter operating history means it carries somewhat more counterparty risk.
Generated by Claude Sonnet · 2026-06-07
Other brand comparisons
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Comparisons are computed from manufacturer datasheets held in the ComparePV database and may not reflect a brand's complete current lineup. Nothing on this page is paid placement.