--- title: "Waaree WS-205 205W Solar Panel - Specs & Review | ComparePV" description: "Waaree WS-205 205W solar panel. Specs: 13.90% efficiency, Polycrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/waaree-ws-205" updated: 2026-09-11 --- # Waaree WS-205 Middle of its segment, modest efficiency 542 panels in the 105-305 W band, all technologies ## Identity - **Manufacturer:** Waaree - **Model:** WS-205 - **Series:** Arun Series - **Rated power:** 205 W - **Cell technology:** Polycrystalline ## How it compares Compared against 105-305 W band, all technologies (542 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 205 W | 230 W | Typical | | | Module efficiency | 13.90% | 16.60% | Weak - bottom 7% | 13,930 | | Power density | 139.0 | 166.0 | Weak - bottom 7% | 13,914 | | Temperature coefficient | -0.386 | -0.370 | Typical | 13,485 | | Weight (kg) | 17.5 kg | 15.3 kg | Weak - bottom 14% | | | Performance warranty | 10 yrs | 25 yrs | Weak - bottom 7% | 13,806 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 13.90% | 16.60% | Weak - bottom 7% | 13,930 | | Power density | 139.0 | 166.0 | Weak - bottom 7% | 13,914 | | Temperature coefficient | -0.386 | -0.370 | Typical | 13,485 | | Weight per kWp | 85.4 | 67.9 | Weak - bottom 14% | 13,826 | | Performance warranty | 10 yrs | 25 yrs | Weak - bottom 7% | 13,806 | ### Watch out for - **13.90% module efficiency** - Bottom 7% of the 105-305 W band, against a median of 16.60%. Ranked 13,930th in the whole database. - **10 year performance warranty** - Bottom 7% of the 105-305 W band, against a median of 25 yrs. Ranked 13,806th in the whole database. - **139.0 watts per square metre** - Bottom 7% of the 105-305 W band, against a median of 166.0. Ranked 13,914th in the whole database. - **Best for:** Commercial and hot-climate. - **Not ideal for:** Tight roof space, owners who want a long output guarantee and roofs where every square metre has to count. ## Specification ### Electrical - **Rated power (Pmax):** 205 W - **Efficiency:** 13.90 % - **Voltage at Pmax (Vmp):** 27.10 V - **Current at Pmax (Imp):** 7.57 A - **Open-circuit voltage (Voc):** 33.10 V - **Short-circuit current (Isc):** 8.25 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:** 1490 mm - **Width:** 990 mm - **Thickness:** 35 mm - **Weight:** 17.5 kg - **Area:** 1.48 m2 - **Power density:** 139.0 Wp/m2 ### Warranty and degradation - **Product warranty:** 5 years - **Performance warranty:** 10 years ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 13930 of 14005 | | Power density | 13914 of 14005 | | Temperature coefficient | 13485 of 14005 | | Weight | 13826 of 14005 | | Warranty | 13806 of 14005 | ## About this series Waaree Arun Series are advanced photovoltaic modules utilizing **n-type TOPCon cell technology**, which significantly increases energy conversion efficiency in challenging lighting conditions. They focus on effectively solving the problem of power loss at high operating temperatures, which translates to more stable yields on hot days. The use of larger silicon wafers combined with **high bifacial efficiency** ensures that these panels generate additional energy from both sides of the module, maximizing the yield from every square meter of surface area. By using **high-transmittance glass** with an anti-reflective coating, this series handles the Polish, often cloudy sky perfectly, capturing more diffused light than standard solutions. It is an optimal choice for projects such as **utility-scale solar farms** and demanding business installations, where lowering the LCOE is key. Importantly, the Arun series shows minimal susceptibility to LID-type degradation, which, combined with **heavy-duty mechanical resistance** to extreme weather phenomena, places it at the forefront of premium products in terms of longevity and investment security. ## Notable figures - Module efficiency of 13.9% is 7.9pp below average for \*\*database\*\* panels (median: 21.8%) - 139.0 W/m² power density is 79.1 W/m² below \*\*database\*\* median (218.1 W/m²) - requires larger installation area - At -0.39%/°C, loses 0.09pp more power per degree than \*\*database\*\* median (-0.30%/°C) - Weight of 17.5 kg (9.0 kg below \*\*database\*\* median of 26.5 kg) allows easier transport and roof mounting - #13930 for efficiency, #13485 for temperature performance out of 14005 panels ## Questions ### What is the maximum power output of the Waaree Arun Series panel? Arun Series modules reach a maximum power of 235 Wp thanks to n-type TOPCon cells. This provides a reliable base for stable installations where predictable energy yield matters, even at the high module operating temperatures typical of Polish summers. Lower thermal losses let the panel maintain higher efficiency than comparable modules built on older PERC technology. ### Are Waaree Arun Series panels bifacial (double-sided)? No, the Arun Series consists of monofacial modules — energy is generated only from the front side of the panel. However, the high-transmission glass with an anti-reflective coating improves diffuse light capture, boosting yield on cloudy days even though there is no rear-side power generation. ### What warranty comes with Waaree Arun Series modules? The manufacturer provides a 5-year product (materials) warranty and a 10-year power output warranty. Waaree is a Tier 1 manufacturer, meaning proven financial stability and bankability — an important factor when applying for loans or subsidies for PV installations. ### How does TOPCon technology in the Arun Series differ from standard PERC cells? The n-type TOPCon cells used in the Arun Series have a lower temperature coefficient than classic PERC cells, meaning smaller power losses at the high module temperatures reached in summer. They also show lower susceptibility to LID degradation, helping the panel maintain its rated efficiency for longer over its service life. ### Will Waaree Arun Series panels perform well under Poland's frequently overcast skies? Yes, thanks to high-transmission glass and an anti-reflective coating, Arun Series modules effectively capture diffuse light, which dominates in Poland for most of the year. Combined with the low temperature coefficient of TOPCon cells, this results in a more stable energy yield regardless of weather conditions. ### Is Waaree a proven, bankable solar panel manufacturer? Yes, Waaree Energies is an Indian Tier 1 manufacturer with a long-standing presence in the global PV market. Tier 1 status confirms the company's financial stability and its ability to honor long-term warranty commitments, which matters when financing an installation through a loan or subsidy program. ## 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 | | --- | --- | --- | | [JA Solar MYP3036-180](https://comparepv.com/panel/ja-solar-myp3036-180) | 180 W | Lighter, +3.7 pp, +15 yr warranty | | [MY Solar MYP3036-180](https://comparepv.com/panel/my-solar-myp3036-180) | 180 W | Lighter, +3.7 pp, +15 yr warranty | | [JA Solar MYP3048-235](https://comparepv.com/panel/ja-solar-myp3048-235) | 235 W | Lighter, +3.6 pp, +15 yr warranty | | [MY Solar MYP3048-235](https://comparepv.com/panel/my-solar-myp3048-235) | 235 W | +30 W, +3.6 pp, +15 yr warranty | | [JA Solar MYP3048-230](https://comparepv.com/panel/ja-solar-myp3048-230) | 230 W | Lighter, +3.3 pp, +15 yr warranty | | [JA Solar MYP3036-175](https://comparepv.com/panel/ja-solar-myp3036-175) | 175 W | Lighter, +3.3 pp, +15 yr warranty | | [MY Solar MYP3048-230](https://comparepv.com/panel/my-solar-myp3048-230) | 230 W | +25 W, +3.3 pp, +15 yr warranty | | [MY Solar MYP3036-175](https://comparepv.com/panel/my-solar-myp3036-175) | 175 W | Lighter, +3.3 pp, +15 yr warranty | | [JS Solar JS 225P](https://comparepv.com/panel/js-solar-js-225p) | 225 W | Hotter, +3.2 pp, +15 yr warranty | | [MY Solar MYM2036-170](https://comparepv.com/panel/my-solar-mym2036-170) | 170 W | Lighter, +3.2 pp, +15 yr warranty | | [Waaree WS-200](https://comparepv.com/panel/waaree-ws-200) | 200 W | -0.3 pp | | [Waaree WS-215](https://comparepv.com/panel/waaree-ws-215) | 215 W | +10 W, +0.7 pp | | [Waaree WS-220](https://comparepv.com/panel/waaree-ws-220) | 220 W | +15 W, +1.0 pp | | [Waaree WS-225](https://comparepv.com/panel/waaree-ws-225) | 225 W | +20 W, +1.3 pp | | [Waaree WS-230](https://comparepv.com/panel/waaree-ws-230) | 230 W | +25 W, +1.7 pp | | [Waaree WS-235](https://comparepv.com/panel/waaree-ws-235) | 235 W | +30 W, +2.0 pp | | [JA Solar MYM2054-270](https://comparepv.com/panel/ja-solar-mym2054-270) | 270 W | +65 W, +7.3 pp, +15 yr warranty | --- Source: https://comparepv.com/panel/waaree-ws-205 Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.