--- title: "ET Solar Panels Review 2026: Pros, Cons & Specs | ComparePV" description: "In-depth ET Solar solar panel review 2026. 10 models analyzed: efficiency, cell technology, warranty, top picks. Compare ET Solar panels on ComparePV." source: "https://comparepv.com/reviews/et-solar" --- # ET Solar panels, *read off the datasheets* ET Solar has 10 modules in the database, from 530 to 555 Wp. Everything below is computed from those 10 datasheets: no score out of ten, no ranking of brands against each other, and nothing a manufacturer can pay to change. Where ET Solar does not publish a figure, it is left out of the average rather than assumed. ## The company - **Founded:** 2005 - **Headquarters:** Nanjing, China Company facts, not datasheet figures. Tier 1 is a financier's bankability list, and says nothing about how a panel performs. ## Key figures | Measure | Value | Note | | --- | --- | --- | | Panels | 10 | models in the database | | Average efficiency | 21.0 % | across the catalogue | | Best efficiency | 21.4 % | their strongest module | | Power range | 530-555 Wp | smallest to largest | | Bifacial share | 50 % | 5 dual-sided models | | Average warranty | 28 years | guaranteed output term | ## 01. The top of the range The leaders of ET Solar's own catalogue on the two figures a specification sheet leads with. Neither is a verdict: the most efficient module in a range is rarely the one that suits a given roof. ### Most efficient module efficiency | # | Panel | power | efficiency | | --- | --- | --- | --- | | 1 | [ET-M772BH555WW/WB](https://comparepv.com/panel/et-solar-et-m772bh555ww-wb) | 555 Wp | 21.4% | | 2 | [ET-M772BH550TW/TB](https://comparepv.com/panel/et-solar-et-m772bh550tw-tb) | 550 Wp | 21.3% | | 3 | [ET-M772BH550WW/WB](https://comparepv.com/panel/et-solar-et-m772bh550ww-wb) | 550 Wp | 21.3% | | 4 | [ET-M772BH545TW/TB](https://comparepv.com/panel/et-solar-et-m772bh545tw-tb) | 545 Wp | 21.1% | | 5 | [ET-M772BH545WW/WB](https://comparepv.com/panel/et-solar-et-m772bh545ww-wb) | 545 Wp | 21.1% | - ET-M772BH555WW/WB - Monocrystalline - ET-M772BH550TW/TB - Monocrystalline bifacial - ET-M772BH550WW/WB - Monocrystalline - ET-M772BH545TW/TB - Monocrystalline bifacial - ET-M772BH545WW/WB - Monocrystalline [Sort the whole catalogue by efficiency](https://comparepv.com/panels/et-solar?sort_by=efficiency&sort_order=desc) ### Highest power nameplate output | # | Panel | efficiency | power | | --- | --- | --- | --- | | 1 | [ET-M772BH555WW/WB](https://comparepv.com/panel/et-solar-et-m772bh555ww-wb) | 21.4% | 555 Wp | | 2 | [ET-M772BH550TW/TB](https://comparepv.com/panel/et-solar-et-m772bh550tw-tb) | 21.3% | 550 Wp | | 3 | [ET-M772BH550WW/WB](https://comparepv.com/panel/et-solar-et-m772bh550ww-wb) | 21.3% | 550 Wp | | 4 | [ET-M772BH545TW/TB](https://comparepv.com/panel/et-solar-et-m772bh545tw-tb) | 21.1% | 545 Wp | | 5 | [ET-M772BH545WW/WB](https://comparepv.com/panel/et-solar-et-m772bh545ww-wb) | 21.1% | 545 Wp | - ET-M772BH555WW/WB - Monocrystalline - ET-M772BH550TW/TB - Monocrystalline bifacial - ET-M772BH550WW/WB - Monocrystalline - ET-M772BH545TW/TB - Monocrystalline bifacial - ET-M772BH545WW/WB - Monocrystalline [Sort the whole catalogue by power](https://comparepv.com/panels/et-solar?sort_by=power&sort_order=desc) ## 02. By what the array is for Three cuts of the same catalogue, each ordered by efficiency inside its band. An empty column means the brand does not build for that case. ### For a commercial array 500 Wp and up | # | Panel | power | efficiency | | --- | --- | --- | --- | | 1 | [ET-M772BH555WW/WB](https://comparepv.com/panel/et-solar-et-m772bh555ww-wb) | 555 Wp | 21.4% | | 2 | [ET-M772BH550TW/TB](https://comparepv.com/panel/et-solar-et-m772bh550tw-tb) | 550 Wp | 21.3% | | 3 | [ET-M772BH550WW/WB](https://comparepv.com/panel/et-solar-et-m772bh550ww-wb) | 550 Wp | 21.3% | | 4 | [ET-M772BH545TW/TB](https://comparepv.com/panel/et-solar-et-m772bh545tw-tb) | 545 Wp | 21.1% | | 5 | [ET-M772BH545WW/WB](https://comparepv.com/panel/et-solar-et-m772bh545ww-wb) | 545 Wp | 21.1% | - ET-M772BH555WW/WB - Monocrystalline - ET-M772BH550TW/TB - Monocrystalline bifacial - ET-M772BH550WW/WB - Monocrystalline - ET-M772BH545TW/TB - Monocrystalline bifacial - ET-M772BH545WW/WB - Monocrystalline ### For a ground mount dual-sided | # | Panel | power | efficiency | | --- | --- | --- | --- | | 1 | [ET-M772BH550TW/TB](https://comparepv.com/panel/et-solar-et-m772bh550tw-tb) | 550 Wp | 21.3% | | 2 | [ET-M772BH545TW/TB](https://comparepv.com/panel/et-solar-et-m772bh545tw-tb) | 545 Wp | 21.1% | | 3 | [ET-M772BH540TW/TB](https://comparepv.com/panel/et-solar-et-m772bh540tw-tb) | 540 Wp | 20.9% | | 4 | [ET-M772BH535TW/TB](https://comparepv.com/panel/et-solar-et-m772bh535tw-tb) | 535 Wp | 20.7% | | 5 | [ET-M772BH530TW/TB](https://comparepv.com/panel/et-solar-et-m772bh530tw-tb) | 530 Wp | 20.5% | - ET-M772BH550TW/TB - Monocrystalline bifacial - ET-M772BH545TW/TB - Monocrystalline bifacial - ET-M772BH540TW/TB - Monocrystalline bifacial - ET-M772BH535TW/TB - Monocrystalline bifacial - ET-M772BH530TW/TB - Monocrystalline bifacial ## 03. What the catalogue is made of Shares are of the 10 modules in the database, counted once each. A power ladder of one module counts as its rungs, which is why a large catalogue is not the same as a wide one. [Cell technology across the market](https://comparepv.com/stats/cell-technology) ### Cell technology share of the catalogue | # | Panel | share | panels | | --- | --- | --- | --- | | | PERC | 100.0% | 10 | PERC accounts for 100.0% of the catalogue - 10 of 10 modules. ### Efficiency spread share of the catalogue | # | Panel | share | panels | | --- | --- | --- | --- | | | 20-21% | 50.0% | 5 | | | 21-22% | 50.0% | 5 | ## 04. Strengths and gaps Both lists are derived from the figures above rather than written about the brand. A gap here is a gap in what is published, which is not always a gap in what is built. ### What this catalogue is good at - **Strength:** Strong bifacial lineup - 50% of portfolio supports dual-sided generation - **Strength:** Strong warranty coverage averaging 28 years - **Strength:** Established manufacturer with 21+ years of experience ### Where it is thin - **Watch out:** Average efficiency of 21.0% is below the industry leading edge - **Watch out:** Limited adoption of latest cell technologies (TOPCon/HJT) ## 05. In short > **ET Solar:** ET Solar is a solid option, offering 10 panels suitable for commercial and utility-scale projects. With an average efficiency of 21.0% and top models reaching 21.4%, their panels deliver competitive performance. ### Common questions #### Is ET Solar a good solar panel manufacturer? ET Solar offers 10 solar panel models with an average efficiency of 21.0%. Check their full panel lineup on ComparePV to find the best model for your needs. #### What types of solar panels does ET Solar make? ET Solar manufactures panels ranging from 530W to 555W, covering both residential and commercial applications. Their portfolio includes PERC (100%) cell technologies. #### How efficient are ET Solar solar panels? ET Solar panels have an average efficiency of 21.0%, with their most efficient model reaching 21.4%. This puts them at a solid mid-range level in the current market. #### Does ET Solar make bifacial solar panels? Yes, ET Solar offers 5 bifacial panels, representing 50% of their portfolio. Bifacial panels can generate additional energy from the rear side, making them ideal for ground-mounted systems. #### What warranty does ET Solar offer on their solar panels? ET Solar panels come with an average performance warranty of 28 years. This warranty guarantees that the panels will maintain a specified level of power output over time, protecting your investment against degradation beyond normal levels. #### Are ET Solar panels good for residential use? ET Solar offers panels in the residential-friendly 380-460W range. For home installations, look for models with high efficiency and compact dimensions to maximize power from limited roof space. Browse their full lineup on ComparePV to filter by power range and specifications. ## 06. Compared with A brand comparison weighs the two catalogues against each other - what each builds, at what efficiency, and how deep the range goes. [Build your own](https://comparepv.com/comparisons) - [ET Solar vs Jinko Solar](https://comparepv.com/et-solar-vs-jinko-solar) - [ET Solar vs JA Solar](https://comparepv.com/et-solar-vs-ja-solar) - [ET Solar vs Trina Solar](https://comparepv.com/et-solar-vs-trina-solar) - [ET Solar vs LONGi](https://comparepv.com/et-solar-vs-longi) - [ET Solar vs Canadian Solar](https://comparepv.com/canadian-solar-vs-et-solar) - [ET Solar vs Q-Cells](https://comparepv.com/et-solar-vs-q-cells) - [ET Solar vs AIKO](https://comparepv.com/aiko-vs-et-solar) - [ET Solar vs Hyundai](https://comparepv.com/et-solar-vs-hyundai) ## Elsewhere - [All ET Solar panels 10](https://comparepv.com/panels/et-solar) - [All manufacturers](https://comparepv.com/reviews) - [Panel database](https://comparepv.com/panels) - [Market statistics](https://comparepv.com/stats) --- Source: https://comparepv.com/reviews/et-solar