--- title: "Waaree Bi-27-380 380W Solar Panel - Specs & Review | ComparePV" description: "Waaree Bi-27-380 380W solar panel. Specs: 18.56% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/waaree-bi-27-380" updated: 2026-09-11 --- # Waaree Bi-27-380 Middle of its segment, heavy for its output 579 panels in the segment PERC 350-400 W ## Identity - **Manufacturer:** Waaree - **Model:** Bi-27-380 - **Series:** AHNAY SERIES - **Rated power:** 380 W - **Cell technology:** PERC - **Bifacial:** yes ## How it compares Compared against segment PERC 350-400 W (579 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 380 W | 380 W | Typical | | | Module efficiency | 18.56% | 19.90% | Weak - bottom 9% | 13,105 | | Power density | 185.6 | 199.0 | Weak - bottom 9% | 13,078 | | Temperature coefficient | -0.370 | -0.350 | Weak - bottom 16% | 13,081 | | Weight (kg) | 29.0 kg | 21.4 kg | Weak - bottom 1% | | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 18.56% | 19.90% | Weak - bottom 9% | 13,105 | | Power density | 185.6 | 199.0 | Weak - bottom 9% | 13,078 | | Temperature coefficient | -0.370 | -0.350 | Weak - bottom 16% | 13,081 | | Weight per kWp | 76.3 | 55.8 | Weak - bottom 1% | 13,641 | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,798 | ### Watch out for - **76.3 kg per kWp** - Bottom 1% of the PERC 350-400 W segment, against a median of 55.8. Ranked 13,641st in the whole database. - **18.56% module efficiency** - Bottom 9% of the PERC 350-400 W segment, against a median of 19.90%. Ranked 13,105th in the whole database. - **185.6 watts per square metre** - Bottom 9% of the PERC 350-400 W segment, against a median of 199.0. Ranked 13,078th in the whole database. - **Best for:** Commercial, utility-scale and shaded-installations. - **Not ideal for:** Weight-limited structures, tight roof space and roofs where every square metre has to count. ## Specification ### Electrical - **Rated power (Pmax):** 380 W - **Efficiency:** 18.56 % - **Voltage at Pmax (Vmp):** 39.07 V - **Current at Pmax (Imp):** 9.75 A - **Open-circuit voltage (Voc):** 48.14 V - **Short-circuit current (Isc):** 10.16 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.370 %/degC - **Temperature coefficient of Voc:** -0.270 %/degC - **Temperature coefficient of Isc:** 0.050 %/degC - **NOCT:** 43 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 144 - **Bifacial:** yes - **Bifacial gain:** 30.00 ### Physical - **Length:** 2029 mm - **Width:** 1009 mm - **Thickness:** 40 mm - **Weight:** 29.0 kg - **Area:** 2.05 m2 - **Power density:** 185.6 Wp/m2 ### Warranty and degradation - **Product warranty:** 10 years - **Performance warranty:** 25 years - **Output guaranteed at end of warranty:** 81.9 % - **First-year degradation:** 2.50 % - **Annual degradation:** 0.65 % - **Output after 30 years:** 299 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 13105 of 14005 | | Power density | 13078 of 14005 | | Temperature coefficient | 13081 of 14005 | | Weight | 13641 of 14005 | | Warranty | 9798 of 14005 | ## About this series The Waaree AHNAY series are bifacial glass-glass modules designed to genuinely increase energy yield from the same installation surface - especially on sites where the rear side of the module also generates electricity. The use of **dual-glass construction** enhances weather resistance and reduces the risk of micro-cracks, which is crucial for long-term operation. The AHNAY variants are available in both **Mono PERC** and **N-type TOPCon** technologies, making it easier to select the right module for project requirements and performance profiles (e.g., higher parameter stability over time). An additional advantage is **resistance to PID** and optimized heat dissipation thanks to **split junction box** solutions, which help limit the risk of hotspots and performance degradation. This is the series for investors building installations on flat roofs, PV farms, and commercial sites, where low energy costs and predictable power generation even under diffuse light and partial shading matter. ## Notable figures - Module efficiency of 18.6% is 0.9pp below average for \*\*PERC 0-400W\*\* panels (median: 19.4%) - Power density of 185.6 W/m² is 8.8 W/m² below \*\*PERC 0-400W\*\* median (194.4 W/m²) - needs more roof space - Temperature coefficient of -0.37%/°C matches the \*\*PERC 0-400W\*\* median - At 29.0 kg (8.5 kg above \*\*PERC 0-400W\*\* median of 20.5 kg), requires checking roof load capacity - Ranked #13105 out of 14005 panels for efficiency in the database ## Questions ### What is the difference between Waaree AHNAY Mono PERC and N-type TOPCon panel variants? Both technologies in the AHNAY series share the same dual-glass bifacial construction, but differ mainly in long-term stability and degradation rate. TOPCon modules have a lower annual degradation rate and higher output efficiency than standard PERC, resulting in higher energy yield over the system's lifetime. PERC remains a more budget-friendly option, well suited for cost-sensitive projects. ### What is the maximum power output and efficiency of the Waaree AHNAY panel? Top variants in the AHNAY series reach up to 665 Wp with 132 half-cut cells, and module efficiency reaches around 21.3 percent. This is a high value for dual-glass bifacial modules, allowing more energy to be generated from the same roof or ground-mount area compared to older, less efficient series. ### What warranty does Waaree offer on the AHNAY series, and what does it cover? The manufacturer provides a 12-year product warranty and a 30-year linear power output warranty. This means protection against factory defects for over a decade, plus a predictable, guaranteed power degradation curve over three decades of operation, which simplifies ROI planning for commercial installations and PV farms. ### Do Waaree AHNAY bifacial panels actually increase energy production compared to standard modules? Yes, the dual-glass construction lets the rear side of the module capture light reflected from the ground, roof, or surroundings, boosting total energy yield, especially over bright, reflective surfaces like gravel or white roofing. The actual gain depends on mounting height and ground albedo, but in practice AHNAY installations outperform comparable monofacial panels of the same surface area. ### Are Waaree AHNAY modules PID-resistant and suitable for large-scale PV farms? Yes, the AHNAY series has certified resistance to potential-induced degradation (PID), which matters in large installations with long strings and high system voltage. A split junction box design also improves heat dissipation and reduces hotspot risk, making this series well suited for PV farms and large commercial rooftop installations. ### Does Waaree offer the quality assurance typical of Tier 1 solar manufacturers? Yes, Waaree is an India-based Tier 1 manufacturer, meaning it has financial stability, its own production capacity, and a documented track record of supplying modules to large commercial and industrial projects worldwide. Tier 1 status increases confidence in the long-term warranty, since the manufacturer has the real capacity to honor it throughout the full 30-year power warranty period. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/AHNAY-SERIES-Bi-27-380-400-WEL-E-and-PD-380-400-144-MPB-HC-0-89eec7ff84b2.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [JA Solar NS-330MH-80](https://comparepv.com/panel/ja-solar-ns-330mh-80) | 330 W | Cooler, lighter, +4.6 pp | | [PolyCrown Solar Tech NS-330MH-80](https://comparepv.com/panel/polycrown-solar-tech-ns-330mh-80) | 330 W | Cooler, lighter, +4.6 pp | | [Gamko New Energy GKA210M340W](https://comparepv.com/panel/gamko-new-energy-gka210m340w) | 340 W | Lighter, +4.4 pp, +5 yr warranty | | [Gamko New Energy GKA210M360W](https://comparepv.com/panel/gamko-new-energy-gka210m360w) | 360 W | Lighter, +4.4 pp, +5 yr warranty | | [Gamko New Energy GKA210M380W (1/4\*4\*38)](https://comparepv.com/panel/gamko-new-energy-gka210m380w-1-4-4-38) | 380 W | Lighter, +4.4 pp, +5 yr warranty | | [Gamko New Energy GKA210M400W (1/2\*4\*20)](https://comparepv.com/panel/gamko-new-energy-gka210m400w-1-2-4-20) | 400 W | Lighter, +4.4 pp, +5 yr warranty | | [Gamko New Energy GKA210M400W (1/4\*4\*40)](https://comparepv.com/panel/gamko-new-energy-gka210m400w-1-4-4-40) | 400 W | Lighter, +4.4 pp, +5 yr warranty | | [Gamko New Energy GKA210M380W (1/2\*4\*19)](https://comparepv.com/panel/gamko-new-energy-gka210m380w-1-2-4-19) | 380 W | Lighter, +4.4 pp, +5 yr warranty | | [Maxeon SPR-MAX3-430-R](https://comparepv.com/panel/maxeon-spr-max3-430-r) | 430 W | Cooler, +4.1 pp, +15 yr warranty | | [Maxeon SPR-MAX3-400-COM](https://comparepv.com/panel/maxeon-spr-max3-400-com) | 400 W | Lighter, +4.0 pp, +15 yr warranty | | [Waaree Bi-17-380](https://comparepv.com/panel/waaree-bi-17-380) | 380 W | Lighter | | [Waaree Bi-27-385](https://comparepv.com/panel/waaree-bi-27-385) | 385 W | +0.2 pp | | [Waaree Bi-17-385](https://comparepv.com/panel/waaree-bi-17-385) | 385 W | Lighter, +0.3 pp | | [Waaree Bi-25-390](https://comparepv.com/panel/waaree-bi-25-390) | 390 W | +10 W, lighter, +0.5 pp | | [Waaree Bi-17-390](https://comparepv.com/panel/waaree-bi-17-390) | 390 W | +10 W, lighter, +0.5 pp | | [Waaree Bi-25-395](https://comparepv.com/panel/waaree-bi-25-395) | 395 W | +15 W, lighter, +0.7 pp | | [MY Solar MS480NC-HJTPBFT](https://comparepv.com/panel/my-solar-ms480nc-hjtpbft) | 480 W | +100 W, cooler, +3.5 pp | --- Source: https://comparepv.com/panel/waaree-bi-27-380 Not in this file, on the page: a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.