--- title: "WINAICO Solar Panels Review 2026: Pros, Cons & Specs | ComparePV" description: "WINAICO solar panels in 2026, from their datasheets: 44 models analyzed for efficiency, cell technology, warranty and top picks. Compare WINAICO panels on ComparePV." source: "https://comparepv.com/reviews/winaico" --- # WINAICO panels, *read off the datasheets* WINAICO is a Taiwanese manufacturer of high-performance crystalline silicon photovoltaic modules, operating as an independent subsidiary of Win Win Precision Technology. The company focuses on premium-quality solar panels backed by long warranty periods and has built a strong reputation in markets such... Everything below is computed from those 44 datasheets: no score out of ten, no ranking of brands against each other, and nothing a manufacturer can pay to change. Where WINAICO does not publish a figure, it is left out of the average rather than assumed. ## The company - **Founded:** 2003 - **Headquarters:** Hsinchu, Taiwan - **Annual capacity:** 0.1-1 GW - **Employees:** 100-500 - **Tier 1 bankable:** Yes (good) 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 | 44 | models in the database | | Average efficiency | 23.0 % | across the catalogue | | Best efficiency | 25.0 % (good) | their strongest module | | Power range | 400-675 Wp | smallest to largest | | Bifacial share | 77 % | 34 dual-sided models | | Average warranty | 29 years | guaranteed output term | ## 01. The top of the range The leaders of WINAICO'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 | [WST-675BKX72-A2](https://comparepv.com/panel/winaico-wst-675bkx72-a2) | 675 Wp | 25.0% (good) | | 2 | [WST-670BKX72-A2](https://comparepv.com/panel/winaico-wst-670bkx72-a2) | 670 Wp | 24.8% (good) | | 3 | [WST-505BKX54-A2](https://comparepv.com/panel/winaico-wst-505bkx54-a2) | 505 Wp | 24.7% (good) | | 4 | [WST-665BKX72-A2](https://comparepv.com/panel/winaico-wst-665bkx72-a2) | 665 Wp | 24.6% (good) | | 5 | [WST-500BKX54-B2](https://comparepv.com/panel/winaico-wst-500bkx54-b2) | 500 Wp | 24.5% (good) | - WST-675BKX72-A2 - Monocrystalline bifacial - WST-670BKX72-A2 - Monocrystalline bifacial - WST-505BKX54-A2 - Monocrystalline bifacial - WST-665BKX72-A2 - Monocrystalline bifacial - WST-500BKX54-B2 - Monocrystalline bifacial [Sort the whole catalogue by efficiency](https://comparepv.com/panels/winaico?sort_by=efficiency&sort_order=desc) ### Highest power nameplate output | # | Panel | efficiency | power | | --- | --- | --- | --- | | 1 | [WST-675BKX72-A2](https://comparepv.com/panel/winaico-wst-675bkx72-a2) | 25.0% (good) | 675 Wp | | 2 | [WST-670BKX72-A2](https://comparepv.com/panel/winaico-wst-670bkx72-a2) | 24.8% (good) | 670 Wp | | 3 | [WST-665BKX72-A2](https://comparepv.com/panel/winaico-wst-665bkx72-a2) | 24.6% (good) | 665 Wp | | 4 | [WST-630NHX66-A4](https://comparepv.com/panel/winaico-wst-630nhx66-a4) | 23.3% (good) | 630 Wp | | 5 | [WST-625NHX66-A4](https://comparepv.com/panel/winaico-wst-625nhx66-a4) | 23.1% (good) | 625 Wp | - WST-675BKX72-A2 - Monocrystalline bifacial - WST-670BKX72-A2 - Monocrystalline bifacial - WST-665BKX72-A2 - Monocrystalline bifacial - WST-630NHX66-A4 - Monocrystalline bifacial - WST-625NHX66-A4 - Monocrystalline bifacial [Sort the whole catalogue by power](https://comparepv.com/panels/winaico?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 house roof 380-460 Wp | # | Panel | power | efficiency | | --- | --- | --- | --- | | 1 | [WST-450NGX-D3](https://comparepv.com/panel/winaico-wst-450ngx-d3) | 450 Wp | 23.0% (good) | | 2 | [WST-450NFX54-B1 Full Black](https://comparepv.com/panel/winaico-wst-450nfx54-b1-full-black) | 450 Wp | 22.5% (good) | | 3 | [WST-435NGX-D3](https://comparepv.com/panel/winaico-wst-435ngx-d3) | 435 Wp | 22.3% (good) | | 4 | [WST-430NGXB-D3 Full Black](https://comparepv.com/panel/winaico-wst-430ngxb-d3-full-black) | 430 Wp | 22.0% (good) | | 5 | [WST-425NGXB-D3 Full Black](https://comparepv.com/panel/winaico-wst-425ngxb-d3-full-black) | 425 Wp | 21.8% | - WST-450NGX-D3 - Monocrystalline bifacial - WST-450NFX54-B1 Full Black - Monocrystalline bifacial - WST-435NGX-D3 - Monocrystalline bifacial - WST-430NGXB-D3 Full Black - Monocrystalline bifacial - WST-425NGXB-D3 Full Black - Monocrystalline bifacial ### For a commercial array 500 Wp and up | # | Panel | power | efficiency | | --- | --- | --- | --- | | 1 | [WST-675BKX72-A2](https://comparepv.com/panel/winaico-wst-675bkx72-a2) | 675 Wp | 25.0% (good) | | 2 | [WST-670BKX72-A2](https://comparepv.com/panel/winaico-wst-670bkx72-a2) | 670 Wp | 24.8% (good) | | 3 | [WST-665BKX72-A2](https://comparepv.com/panel/winaico-wst-665bkx72-a2) | 665 Wp | 24.6% (good) | | 4 | [WST-630NHX66-A4](https://comparepv.com/panel/winaico-wst-630nhx66-a4) | 630 Wp | 23.3% (good) | | 5 | [WST-625NHX66-A4](https://comparepv.com/panel/winaico-wst-625nhx66-a4) | 625 Wp | 23.1% (good) | - WST-675BKX72-A2 - Monocrystalline bifacial - WST-670BKX72-A2 - Monocrystalline bifacial - WST-665BKX72-A2 - Monocrystalline bifacial - WST-630NHX66-A4 - Monocrystalline bifacial - WST-625NHX66-A4 - Monocrystalline bifacial ### For a ground mount dual-sided | # | Panel | power | efficiency | | --- | --- | --- | --- | | 1 | [WST-675BKX72-A2](https://comparepv.com/panel/winaico-wst-675bkx72-a2) | 675 Wp | 25.0% (good) | | 2 | [WST-670BKX72-A2](https://comparepv.com/panel/winaico-wst-670bkx72-a2) | 670 Wp | 24.8% (good) | | 3 | [WST-505BKX54-A2](https://comparepv.com/panel/winaico-wst-505bkx54-a2) | 505 Wp | 24.7% (good) | | 4 | [WST-665BKX72-A2](https://comparepv.com/panel/winaico-wst-665bkx72-a2) | 665 Wp | 24.6% (good) | | 5 | [WST-500BKX54-B2](https://comparepv.com/panel/winaico-wst-500bkx54-b2) | 500 Wp | 24.5% (good) | - WST-675BKX72-A2 - Monocrystalline bifacial - WST-670BKX72-A2 - Monocrystalline bifacial - WST-505BKX54-A2 - Monocrystalline bifacial - WST-665BKX72-A2 - Monocrystalline bifacial - WST-500BKX54-B2 - Monocrystalline bifacial ## 03. What the catalogue is made of Shares are of the 44 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 | | --- | --- | --- | --- | | | Back Contact | 40.9% | 18 | | | Unknown | 22.7% | 10 | | | N-type | 18.2% | 8 | | | HJT | 9.1% | 4 | | | TOPCon | 9.1% | 4 | Back Contact accounts for 40.9% of the catalogue - 18 of 44 modules. ### Efficiency spread share of the catalogue | # | Panel | share | panels | | --- | --- | --- | --- | | | 20-21% | 9.1% | 4 | | | 21-22% | 15.9% | 7 | | | 22-23% | 15.9% | 7 | | | 23%+ | 59.1% | 26 | ## 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:** Tier 1 bankable manufacturer - recognized by major financial institutions - **Strength:** High-efficiency panels available (up to 25.0%) - **Strength:** Strong bifacial lineup - 77% of portfolio supports dual-sided generation - **Strength:** Strong warranty coverage averaging 29 years - **Strength:** High-power panels available (up to 675W) for commercial applications - **Strength:** Established manufacturer with 23+ years of experience - **Strength:** Large-scale production capacity of 0.1-1 GW ## 05. In short > **WINAICO:** WINAICO is an industry leader in efficiency, offering 44 panels suitable for both residential and commercial buyers. With an average efficiency of 23.0% and top models reaching 25.0%, their panels deliver competitive performance. As a Tier 1 bankable manufacturer, they offer strong financial backing and long-term reliability. ### Common questions #### Is WINAICO a good solar panel manufacturer? WINAICO offers 44 solar panel models with an average efficiency of 23.0%. They are a Tier 1 bankable manufacturer, recognized by major financial institutions for reliability. Check their full panel lineup on ComparePV to find the best model for your needs. #### What types of solar panels does WINAICO make? WINAICO manufactures panels ranging from 400W to 675W, covering both residential and commercial applications. Their portfolio includes Back Contact (41%), Unknown (23%), N-type (18%) cell technologies. #### How efficient are WINAICO solar panels? WINAICO panels have an average efficiency of 23.0%, with their most efficient model reaching 25.0%. This puts them among the industry leaders in the current market. #### Does WINAICO make bifacial solar panels? Yes, WINAICO offers 34 bifacial panels, representing 77% of their portfolio. Bifacial panels can generate additional energy from the rear side, making them ideal for ground-mounted systems. #### What warranty does WINAICO offer on their solar panels? WINAICO panels come with an average performance warranty of 29 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 WINAICO panels good for residential use? WINAICO 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) - [WINAICO vs Jinko Solar](https://comparepv.com/jinko-solar-vs-winaico) - [WINAICO vs JA Solar](https://comparepv.com/ja-solar-vs-winaico) - [WINAICO vs Trina Solar](https://comparepv.com/trina-solar-vs-winaico) - [WINAICO vs LONGi](https://comparepv.com/longi-vs-winaico) - [WINAICO vs Canadian Solar](https://comparepv.com/canadian-solar-vs-winaico) - [WINAICO vs Q-Cells](https://comparepv.com/q-cells-vs-winaico) - [WINAICO vs AIKO](https://comparepv.com/aiko-vs-winaico) - [WINAICO vs Hyundai](https://comparepv.com/hyundai-vs-winaico) ## Elsewhere - [All WINAICO panels 44](https://comparepv.com/panels/winaico) - [All manufacturers](https://comparepv.com/reviews) - [Panel database](https://comparepv.com/panels) - [Market statistics](https://comparepv.com/stats) --- Source: https://comparepv.com/reviews/winaico