--- title: "Waaree WS-330 330W Solar Panel - Specs & Review | ComparePV" description: "Waaree WS-330 330W solar panel. Specs: 16.57% efficiency, Polycrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/waaree-ws-330" updated: 2026-09-11 --- # Waaree WS-330 Middle of its segment, modest efficiency 3,085 panels in the 230-430 W band, all technologies ## Identity - **Manufacturer:** Waaree - **Model:** WS-330 - **Series:** EDO PRO SERIES - **Rated power:** 330 W - **Cell technology:** Polycrystalline ## How it compares Compared against 230-430 W band, all technologies (3085 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 330 W | 395 W | Weak - bottom 17% | | | Module efficiency | 16.57% | 20.30% | Weak - bottom 8% | 13,557 | | Power density | 165.7 | 202.8 | Weak - bottom 8% | 13,549 | | Temperature coefficient | -0.386 | -0.350 | Weak - bottom 8% | 13,485 | | Weight (kg) | 21.5 kg | 21.2 kg | Weak - bottom 18% | | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 16.57% | 20.30% | Weak - bottom 8% | 13,557 | | Power density | 165.7 | 202.8 | Weak - bottom 8% | 13,549 | | Temperature coefficient | -0.386 | -0.350 | Weak - bottom 8% | 13,485 | | Weight per kWp | 65.2 | 55.7 | Weak - bottom 18% | 13,048 | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,798 | ### Watch out for - **16.57% module efficiency** - Bottom 8% of the 230-430 W band, against a median of 20.30%. Ranked 13,557th in the whole database. - **165.7 watts per square metre** - Bottom 8% of the 230-430 W band, against a median of 202.8. Ranked 13,549th in the whole database. - **-0.386 %/°C temperature coefficient** - Bottom 8% of the 230-430 W band, against a median of -0.350. Ranked 13,485th in the whole database. - **Best for:** Residential and commercial. - **Not ideal for:** Tight roof space, roofs where every square metre has to count and hot climates. ## Specification ### Electrical - **Rated power (Pmax):** 330 W - **Efficiency:** 16.57 % - **Voltage at Pmax (Vmp):** 37.95 V - **Current at Pmax (Imp):** 8.70 A - **Open-circuit voltage (Voc):** 46.70 V - **Short-circuit current (Isc):** 9.25 A - **Max system voltage:** 1500 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 - **Cell count:** 72 ### Physical - **Length:** 1985 mm - **Width:** 1003 mm - **Thickness:** 35 mm - **Weight:** 21.5 kg - **Area:** 1.99 m2 - **Power density:** 165.7 Wp/m2 ### Warranty and degradation - **Product warranty:** 10 years - **Performance warranty:** 25 years - **Output guaranteed at end of warranty:** 80.7 % - **First-year degradation:** 2.50 % - **Annual degradation:** 0.70 % - **Output after 30 years:** 255 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 13557 of 14005 | | Power density | 13549 of 14005 | | Temperature coefficient | 13485 of 14005 | | Weight | 13048 of 14005 | | Warranty | 9798 of 14005 | ## About this series The Waaree EDO PRO SERIES is designed for installations where predictable module performance over years and stable yields in variable weather conditions are crucial. Panels feature **glass with an antireflection coating**, which enhances light transmission and helps maintain production even with diffuse radiation. In practice, this means less fluctuation in yields on cloudy days and better utilization of morning and afternoon sunlight. A key advantage of the series is **PID resistance** and the use of durable, **UV-resistant encapsulation**, which minimizes the risk of power degradation over the long term and increases investment security. Additionally, the modules are **current-matched**, making it easier to build strings with balanced parameters and reduce losses due to mismatching. EDO PRO SERIES is suitable for rooftop and ground installations for homes, businesses, and PV farms - especially where resilience to harsh conditions is important, such as salt mist, dust, or hail. ## Notable figures - Efficiency of 16.6% is 5.3pp below the \*\*database\*\* median (21.8%) - 165.8 W/m² power density is 52.3 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) - At 21.5 kg, this panel is 5.0 kg lighter than \*\*database\*\* median (26.5 kg) - easier handling during installation - Ranked #13557 out of 14005 panels for efficiency in the database ## Questions ### Is the Waaree EDO PRO SERIES 395W panel still available for purchase? No, the EDO PRO SERIES has been discontinued from Waaree's current production lineup and replaced by newer, higher-power models. Availability is now limited to remaining warehouse stock from distributors holding final production batches. It's worth checking current stock levels and manufacturing date with the seller, since limited ongoing supply can make it harder to source matching modules for future system expansion. ### What warranty comes with Waaree EDO PRO SERIES panels? The manufacturer provides a 10-year product warranty covering material and workmanship defects, plus a 25-year power performance warranty. This means the panel should still deliver a significant share of its rated output after a quarter century of operation. This is standard for Tier 1 manufacturers and gives investors predictable returns over the system's long-term lifecycle. ### What is PID resistance in EDO PRO SERIES panels and why does it matter? PID (Potential Induced Degradation) is power loss caused by voltage differences between the cells and the frame, worsening in hot, humid climates. EDO PRO SERIES panels are tested for PID resistance and use durable, UV-resistant encapsulation, reducing the risk of sudden output drops after several years of operation. For investors, this means lower risk of unexpected efficiency loss over the system's lifetime. ### What does current-matching in EDO PRO SERIES mean and how does it affect system output? Current matching means sorting panels with similar current values before wiring them into a string. This keeps cells operating under comparable electrical conditions, reducing mismatch losses caused by differences between modules. In practice, this results in higher real-world string yield compared to randomly selected panels, especially in larger utility-scale PV farm installations. ### Is Waaree a Tier 1 manufacturer, and what does that mean for buyers of EDO PRO SERIES? Yes, Waaree Energies is an Indian manufacturer classified as Tier 1 by Bloomberg NEF, confirming financial stability, production capacity, and creditworthiness for lenders financing PV projects. For buyers, this means easier access to project financing, lower risk of the manufacturer going out of business during the warranty period, and greater confidence in the quality control behind EDO PRO SERIES modules. ### Are EDO PRO SERIES panels suitable for harsh environments, such as coastal installations? Yes, the series was designed for resilience against challenging conditions like salt mist, dust, and hail, thanks to durable antireflective-coated glass and resistant encapsulation. This makes the 395W panels suitable for both rooftop and ground-mount installations in coastal or dusty regions, though for very aggressive environments it's worth also verifying the frame's corrosion resistance rating. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/edo-pro-series-ws-320-350-734630e7c0-ae473abb1d48.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [SunLink LNSK-340M](https://comparepv.com/panel/sunlink-lnsk-340m) | 340 W | +10 W, cooler, +3.5 pp | | [Canadian Solar CS3K-330P](https://comparepv.com/panel/canadian-solar-cs3k-330p) | 330 W | Cooler, lighter, +3.3 pp | | [Canadian Solar CS3K-335MB-AG](https://comparepv.com/panel/canadian-solar-cs3k-335mb-ag) | 335 W | Cooler, +3.3 pp, +5 yr warranty | | [SunLink LNSK-335M](https://comparepv.com/panel/sunlink-lnsk-335m) | 335 W | Cooler, +3.2 pp | | [Canadian Solar CS3L-365P](https://comparepv.com/panel/canadian-solar-cs3l-365p) | 365 W | +35 W, cooler, +3.1 pp | | [Canadian Solar CS3K-325P](https://comparepv.com/panel/canadian-solar-cs3k-325p) | 325 W | Cooler, lighter, +3.0 pp | | [Canadian Solar CS3L-360P](https://comparepv.com/panel/canadian-solar-cs3l-360p) | 360 W | +30 W, cooler, +2.9 pp | | [SunLink LNSK-330M](https://comparepv.com/panel/sunlink-lnsk-330m) | 330 W | Cooler, +2.9 pp | | [Waaree WS-320](https://comparepv.com/panel/waaree-ws-320) | 320 W | -10 W, -0.5 pp | | [Waaree WS-325](https://comparepv.com/panel/waaree-ws-325) | 325 W | -0.2 pp | | [Waaree WS-335](https://comparepv.com/panel/waaree-ws-335) | 335 W | +0.2 pp | | [Waaree WS-340](https://comparepv.com/panel/waaree-ws-340) | 340 W | +10 W, +0.5 pp | | [Waaree WS-345](https://comparepv.com/panel/waaree-ws-345) | 345 W | +15 W, +0.8 pp | | [Waaree WS-350](https://comparepv.com/panel/waaree-ws-350) | 350 W | +20 W, +1.0 pp | | [Waaree WSM-380](https://comparepv.com/panel/waaree-wsm-380) | 380 W | +50 W, cooler, +2.5 pp | | [Waaree WSM-385](https://comparepv.com/panel/waaree-wsm-385) | 385 W | +55 W, cooler, +2.8 pp | | [Maxeon SPR-MAX7-475](https://comparepv.com/panel/maxeon-spr-max7-475) | 475 W | +145 W, +7.4 pp, +15 yr warranty | --- Source: https://comparepv.com/panel/waaree-ws-330 Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.