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Waaree Brand review

WS-320

320 Wp Polycrystalline
ComparePV verdict

Middle of its segment, modest efficiency

Rank 13,558 of 14,005
Compare panels Datasheet PDF
Power (Wp)
320
Weak · bottom 16%
Efficiency (%)
16.06
Weak · bottom 7%
Density (Wp/m²)
160.7
Weak · bottom 8%
Temp (%/°C)
-0.386
Weak · bottom 10%
Weight (kg)
21.5
Weak · bottom 17%
Warranty (yrs)
25
Typical · median 25 yrs

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.

Ranking

2,653 panels in the 220-420 W band, all technologies
Metric This panel Median Position in segment Overall rank
Module efficiency 16.06% 20.10% Weak · bottom 7% 13,629
Power density 160.7 200.6 Weak · bottom 8% 13,614
Temperature coefficient -0.386 -0.350 Weak · bottom 10% 13,485
Weight per kWp 67.2 56.5 Weak · bottom 17% 13,223
Performance warranty 25 yrs 25 yrs Typical 9,798
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

0 positive · 3 caution
Best for

Residential and commercial.

Not ideal for

Tight roof space, roofs where every square metre has to count and hot climates.

Watch-outs
16.06% module efficiency

Bottom 7% of the 220-420 W band, against a median of 20.10%. Ranked 13,629th in the whole database.

160.7 watts per square metre

Bottom 8% of the 220-420 W band, against a median of 200.6. Ranked 13,614th in the whole database.

-0.386 %/°C temperature coefficient

Bottom 10% of the 220-420 W band, against a median of -0.350. Ranked 13,485th in the whole database.

Notes from the database
  • Efficiency of 16.1% is 5.8pp below the database median (21.8%)
  • 160.7 W/m² power density is 57.4 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
  • #13629 for efficiency, #13485 for temperature performance out of 14005 panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 320 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 16.06 % Weak Segment median 20.10%
Vmpp · Impp 37.65 V · 8.50 A Operating point at max power
Voc · Isc 46.50 V · 9.15 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1985×1003×35 mm · 1.99 m² of roof
Weight 21.5 kg Weak Weak · bottom 17%
Cells 72 Polycrystalline
Coefficient Pmax -0.386 %/°C Weak bottom 10% of its segment
Coefficient Voc · Isc -0.278 · 0.051 %/°C
NOCT 46 °C At 800 W/m², 20 °C ambient
Product warranty 10 years Hardware defects only
Performance warranty 25 years Typical median 25 yrs · median 25 yrs
End-of-warranty output 80.7 % Equals 247 W guaranteed
Degradation 2.50 → 0.70 % First year, then annual

Simulations

Live - change any input
Lifetime output & value
30 years at 1200 kWh/kWp/year and €0.50 per kWh
Power in year 30
-
Lifetime energy
-
Energy value
-

Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.

Heat losses
-0.386 %/°C against a segment median of -0.350
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Waaree WS-320 320 W 16.06% -0.386 21.5 kg You are here
LNSK-340M 340 W 20.08% -0.360 21.0 kg +20 W, cooler, +4.0 pp
CS3K-330P 330 W 19.90% -0.360 18.5 kg Cooler, lighter, +3.8 pp
CS3K-335MB-AG 335 W 19.90% -0.360 22.3 kg Cooler, +3.8 pp, +5 yr warranty
LNSK-335M 335 W 19.78% -0.360 21.0 kg +15 W, cooler, +3.7 pp
CS3L-365P 365 W 19.70% -0.360 21.1 kg +45 W, cooler, +3.6 pp
CS3K-325P 325 W 19.60% -0.360 18.5 kg Cooler, lighter, +3.5 pp
CS3L-360P 360 W 19.50% -0.360 21.1 kg +40 W, cooler, +3.4 pp
LNSK-330M 330 W 19.49% -0.360 21.0 kg +10 W, cooler, +3.4 pp
WS-325 325 W 16.32% -0.386 21.5 kg +0.3 pp
WS-330 330 W 16.57% -0.386 21.5 kg +10 W, +0.5 pp
WS-335 335 W 16.82% -0.386 21.5 kg +15 W, +0.8 pp
WS-340 340 W 17.07% -0.386 21.5 kg +20 W, +1.0 pp
WS-345 345 W 17.32% -0.386 21.5 kg +25 W, +1.3 pp
WS-350 350 W 17.57% -0.386 21.5 kg +30 W, +1.5 pp
WSM-380 380 W 19.08% -0.370 21.5 kg +60 W, cooler, +3.0 pp
WSM-385 385 W 19.33% -0.370 21.5 kg +65 W, cooler, +3.3 pp
SPR-MAX7-475 475 W 24.00% -0.270 21.1 kg +155 W, +7.9 pp, +15 yr warranty

Found 110 panels of the same or similar size to this one, within ±10 mm. See them here Found 262 panels of the same or similar size to this one, within ±25 mm. See them here Found 443 panels of the same or similar size to this one, within ±50 mm. See them here Found 548 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
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.
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