--- title: "Waaree WS-120 /12V 120W Solar Panel - Specs & Review | ComparePV" description: "Waaree WS-120 /12V 120W solar panel. Specs: 14.11% efficiency, Polycrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/waaree-ws-120-12v" updated: 2026-09-11 --- # Waaree WS-120 /12V Middle of its segment, heavy for its output 296 panels in the 20-220 W band, all technologies ## Identity - **Manufacturer:** Waaree - **Model:** WS-120 /12V - **Series:** ARUN SERIES (WS-100 to WS-235) - **Rated power:** 120 W - **Cell technology:** Polycrystalline ## How it compares Compared against 20-220 W band, all technologies (296 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 120 W | 160 W | Typical | | | Module efficiency | 14.11% | 15.88% | Weak - bottom 13% | 13,914 | | Power density | 141.1 | 158.7 | Weak - bottom 16% | 13,895 | | Temperature coefficient | -0.386 | -0.370 | Typical | 13,485 | | Weight (kg) | 13.0 kg | 11.3 kg | Weak - bottom 6% | | | Performance warranty | 10 yrs | 25 yrs | Weak - bottom 13% | 13,806 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 14.11% | 15.88% | Weak - bottom 13% | 13,914 | | Power density | 141.1 | 158.7 | Weak - bottom 16% | 13,895 | | Temperature coefficient | -0.386 | -0.370 | Typical | 13,485 | | Weight per kWp | 108.3 | 71.2 | Weak - bottom 6% | 13,950 | | Performance warranty | 10 yrs | 25 yrs | Weak - bottom 13% | 13,806 | ### Watch out for - **108.3 kg per kWp** - Bottom 6% of the 20-220 W band, against a median of 71.2. Ranked 13,950th in the whole database. - **10 year performance warranty** - Bottom 13% of the 20-220 W band, against a median of 25 yrs. - **14.11% module efficiency** - Bottom 13% of the 20-220 W band, against a median of 15.88%. - **Best for:** Residential and off-grid. - **Not ideal for:** Weight-limited structures, owners who want a long output guarantee and tight roof space. ## Specification ### Electrical - **Rated power (Pmax):** 120 W - **Efficiency:** 14.11 % - **Voltage at Pmax (Vmp):** 17.56 V - **Current at Pmax (Imp):** 6.84 A - **Open-circuit voltage (Voc):** 22.17 V - **Short-circuit current (Isc):** 7.22 A - **Max system voltage:** 1000 V ### Temperature - **Temperature coefficient of Pmax:** -0.386 %/degC - **Temperature coefficient of Voc:** -0.278 %/degC - **Temperature coefficient of Isc:** 0.051 %/degC - **NOCT:** 46 degC ### Cell and construction - **Cell type:** Polycrystalline ### Physical - **Length:** 1260 mm - **Width:** 675 mm - **Thickness:** 35 mm - **Weight:** 13.0 kg - **Area:** 0.85 m2 - **Power density:** 141.1 Wp/m2 ### Warranty and degradation - **Product warranty:** 5 years - **Performance warranty:** 10 years ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 13914 of 14005 | | Power density | 13895 of 14005 | | Temperature coefficient | 13485 of 14005 | | Weight | 13950 of 14005 | | Warranty | 13806 of 14005 | ## About this series The Waaree ARUN series (WS-100 to WS-235) are silicon modules designed for stable operation in typical real-world operating conditions - from domestic installations to utility and off-grid applications. A key feature is **polycrystalline cell technology**, valued where predictable performance and a good quality-to-cost ratio of the entire system are important. In practice, this means easier design of installations with repeatable yields, without overpaying for solutions you don’t use. A major advantage of the series is **the wide range of power options and voltage configurations**, enabling the modules to be adapted both to traditional rooftop installations and to battery systems, lighting, monitoring, or recreational facilities. Users gain **greater design flexibility** - it’s easier to match the number of panels to the inverter or charge controller, minimizing losses from mismatching. This is an option for investors who expect **proven construction and predictable operation**, rather than marketing promises. ## Notable figures - Efficiency of 14.1% is 7.7pp below the \*\*database\*\* median (21.8%) - 141.1 W/m² power density is 77.0 W/m² below \*\*database\*\* median (218.1 W/m²) - requires larger installation area - -0.39%/°C temperature coefficient - 0.09pp worse than \*\*database\*\* median (-0.30%/°C), expect higher hot weather losses - 13.0 kg weight - 13.5 kg lighter than \*\*database\*\* median (26.5 kg), reducing installation effort - #13914 for efficiency, #13485 for temperature performance out of 14005 panels ## Questions ### What's the difference between the polycrystalline technology used in Waaree ARUN panels and popular monocrystalline modules? Polycrystalline cells in the ARUN series have slightly lower efficiency than monocrystalline (around 15.6%), but offer more predictable performance and lower cost per Wp. For installations where roof area is less critical than budget - such as residential or utility projects - this is a sensible trade-off. The power temperature coefficient is -0.39%/°C, a typical value for this technology. ### What's the maximum power output in the Waaree ARUN series, and how do I choose the right variant for my system? The series spans WS-100 to WS-235, with the most powerful modules reaching up to 220 Wp. A wide range of power ratings and voltage configurations (36-cell and 72-cell versions) makes it easy to match panel count to a specific inverter or charge controller - whether for a rooftop installation or a smaller battery-based system powering lighting or monitoring equipment. ### What warranty applies to Waaree ARUN panels? The manufacturer provides a 5-year product warranty covering material and workmanship defects, plus a 10-year power performance warranty. This is a standard level of protection for polycrystalline modules in this price segment, sufficient for most residential and utility installations, though shorter than premium series that offer warranties extending to 25-30 years. ### Are Waaree ARUN panels suitable for off-grid and battery-based systems? Yes, this is one of the series' main use cases. Thanks to the availability of lower power variants and different voltage configurations, ARUN modules integrate easily with MPPT or PWM charge controllers in off-grid setups powering lighting, monitoring, pumps, or recreational properties. The flexibility in power selection minimizes losses from mismatching the panel to battery capacity. ### Do Waaree ARUN panels perform well in low temperatures and harsh weather conditions? Yes, the modules are rated for operation between -40°C and 85°C, making them suitable for continental climates with cold winters. The design resists potential-induced degradation (PID), and tempered low-iron glass provides resistance to hail and snow loads. The panels also have confirmed resistance to salt mist and ammonia exposure. ### Is Waaree a proven Tier 1 manufacturer, and is it worth buying panels made in India? Yes, Waaree is classified as a Tier 1 manufacturer, meaning it meets the financial stability, production scale, and bankability criteria required by project financiers. The company is headquartered in India and is one of Asia's largest PV module manufacturers, translating into competitive pricing while maintaining quality standards comparable to Chinese producers. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/ARUN-SERIES-WS-100-235-WEL-E-PD-100-235-36-72-P-C-02-13-082-9ee66c3c3d31.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [MY Solar MYM2036-170](https://comparepv.com/panel/my-solar-mym2036-170) | 170 W | +50 W, +3.0 pp, +15 yr warranty | | [JA Solar MYP3036-170](https://comparepv.com/panel/ja-solar-myp3036-170) | 170 W | +50 W, +2.6 pp, +15 yr warranty | | [MY Solar MYP3036-170](https://comparepv.com/panel/my-solar-myp3036-170) | 170 W | +50 W, +2.6 pp, +15 yr warranty | | [MY Solar MYM2036-165](https://comparepv.com/panel/my-solar-mym2036-165) | 165 W | +45 W, +2.5 pp, +15 yr warranty | | [Resun Solar RS6E-160P](https://comparepv.com/panel/resun-solar-rs6e-160p) | 160 W | +40 W, +2.1 pp, +20 yr warranty | | [JA Solar MYP3036-165](https://comparepv.com/panel/ja-solar-myp3036-165) | 165 W | +45 W, +2.1 pp, +15 yr warranty | | [MY Solar MYP3036-165](https://comparepv.com/panel/my-solar-myp3036-165) | 165 W | +45 W, +2.1 pp, +15 yr warranty | | [TPL Solar TPL160P-36](https://comparepv.com/panel/tpl-solar-tpl160p-36) | 160 W | +40 W, +2.0 pp, +20 yr warranty | | [MY Solar MYM2036-160](https://comparepv.com/panel/my-solar-mym2036-160) | 160 W | +40 W, +2.0 pp, +15 yr warranty | | [Waaree WS-160 /24V](https://comparepv.com/panel/waaree-ws-160-24v) | 160 W | +40 W, +1.8 pp | | [Waaree WS-115 /12V](https://comparepv.com/panel/waaree-ws-115-12v) | 115 W | -0.6 pp | | [Waaree WS-125 /12V](https://comparepv.com/panel/waaree-ws-125-12v) | 125 W | +0.6 pp | | [Waaree WS-130 /12V](https://comparepv.com/panel/waaree-ws-130-12v) | 130 W | +10 W, +1.2 pp | | [Waaree WS-135 /12V](https://comparepv.com/panel/waaree-ws-135-12v) | 135 W | +15 W, +1.8 pp | | [Gamko New Energy GKA182M180W](https://comparepv.com/panel/gamko-new-energy-gka182m180w) | 180 W | +60 W, +8.9 pp, +20 yr warranty | | [Gamko New Energy GKA182M200W](https://comparepv.com/panel/gamko-new-energy-gka182m200w) | 200 W | +80 W, +8.9 pp, +20 yr warranty | --- Source: https://comparepv.com/panel/waaree-ws-120-12v Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.