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HT-SAAE vs Longi Solar - solar panel manufacturer comparison

HT-SAAE
China Founded 1998 Tier 1
Read the HT-SAAE review
VS
Longi Solar
China Founded 2000 Tier 1
Read the Longi Solar review
At a glance

Longi Solar has the broader catalog (255 vs 112 models). Longi Solar leads on peak efficiency at 25.00%.

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.

Panel models
112 255
Highest power
715 Wp 670 Wp
Best efficiency
23.9% 25.0%
Average efficiency
20.5% 22.6%
Bifacial share
47% 40%
Average warranty
29 yrs 28 yrs
01

The two companies

Company facts, not datasheet figures
HT-SAAE

HT-SAAE (Shanghai Aerospace Automobile Electromechanical Co., Ltd.) is a state-owned enterprise specializing in photovoltaic products. The company integrates polysilicon, solar cells, battery packs, and photovoltaic + energy storage systems. They develop and manufacture solar panels for residential, commercial, and...

Founded
1998
Headquarters
Shanghai, China
Annual capacity
2+ GW/year
Employees
500+
Tier 1 bankable
Yes
Longi Solar

LONGi Green Energy Technology Co., Ltd. is a world-leading solar technology company that manufactures monocrystalline silicon wafers and modules. The company is committed to providing high-efficiency and reliable clean energy solutions for large-scale power plants, various industries, and households. LONGi aims to be...

Founded
2000
Headquarters
Xi'an, Shaanxi, China
Annual capacity
85-90 GW/year
Employees
37,853
Tier 1 bankable
Yes
02

Catalogue against catalogue

Averages over every model in the database
Metric HT-SAAE Longi Solar
Catalog & Power
Panel Models 112 255+143
Max Power 715 W+45 W 670 W
Avg Power 470 W 544 W+74 W
Efficiency
Max Efficiency 23.90% 25.00%+1.10 pp
Avg Efficiency 20.47% 22.65%+2.18 pp
Reliability & Warranty
Avg Temp Coefficient -0.322%/°C -0.291%/°C+0.031
Bifacial Share 53 (47%)+8 pp 101 (40%)
Avg Warranty 29.1 yrs+1.3 yr 27.8 yrs

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.

03

What each of them builds

Cell technology across the market
Efficiency spread
Share of each catalogue in every efficiency band

Longi Solar skews to higher efficiency: 43% of lineup is 23%+

Power spread
Share of each catalogue in every power band

Longi Solar offers more 600W+ panels (38% of lineup)

HT-SAAE cell technology
Share of their models by cell architecture

Dominant cell tech: TOPCon (79%)

Longi Solar cell technology
Share of their models by cell architecture

Dominant cell tech: N-type (42%)

04

The flagships

Highest-power models from each brand
05

Written summary

Checking cache...

HT-SAAE is a Chinese solar manufacturer headquartered in Shanghai, with origins in China's aerospace sector. The company was established in 1960 to develop solar technology for China's satellite program, and its parent - Shanghai Aerospace Automobile Electromechanical Co., Ltd, operating under the CASC group - entered commercial solar in 1998 upon listing on the Shanghai Stock Exchange. HT-SAAE holds confirmed BloombergNEF Tier 1 bankability status and operates production bases in China and Inner Mongolia, as well as a manufacturing subsidiary in Istanbul, Turkey, opened in 2016. LONGi Green Energy was founded in 2000 in Xi'an, Shaanxi, and has grown into one of the largest solar module suppliers globally. LONGi has consistently maintained BloombergNEF Tier 1 status and, as of Q1 2026, also achieved Tier 1 recognition in energy storage for the first time. With planned module shipments of 80-90 GW for 2025, LONGi's institutional footprint is in a substantially different league from HT-SAAE.

HT-SAAE's current product lineup is anchored in TOPCon technology, which dominates the company's catalog. The flagship Jupiter Series targets both residential rooftop and commercial ground-mount applications, with module efficiencies reaching up to 23.5%. The Istanbul production facility can offer a logistical and tariff advantage for European buyers seeking shorter supply chains. LONGi, by contrast, has positioned itself at the technological frontier: its HPBC 2.0 back-contact (BC) cell and module platform now exceeds 57 GW of total production capacity including collaborative manufacturing, and is expected to account for more than 65% of LONGi's shipments in 2026. The company serves every market segment, from residential rooftop to utility-scale ground-mount, across dozens of countries. Certified cell efficiency records - 25.82% for HJT and 33% for a crystalline silicon-perovskite tandem cell - reinforce LONGi's standing as the industry's R&D benchmark.

For most international buyers - independent installers, EPC contractors, or institutional project developers - LONGi is the lower-risk default, given its scale, depth of financing relationships, and leading BC technology roadmap. HT-SAAE is a credible Tier 1 alternative for buyers who prioritize cost competitiveness within a quality-assured bracket, or who benefit specifically from the Turkish manufacturing origin when sourcing for European projects. The two brands are not interchangeable at the enterprise level: LONGi carries considerably more weight with project lenders and offers a more advanced technology pipeline, while HT-SAAE occupies a solid mid-tier position backed by a genuinely unusual aerospace heritage.

Generated by Claude Sonnet · 2026-05-24

06

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Something missing from a catalogue? Both lists are built from the datasheets in the database. If a model is absent, it has not been ingested yet.

Shop prices: See 156 Longi Solar offers

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.