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Waaree Brand review

WSM-390

390 Wp PERC
ComparePV verdict

Middle of its segment, weak in heat

Rank 12,647 of 14,005
Compare panels Datasheet PDF
Power (Wp)
390
Typical for its class
Efficiency (%)
19.58
Typical · median 19.90%
Density (Wp/m²)
195.9
Typical · median 199.0
Temp (%/°C)
-0.370
Weak · bottom 16%
Weight (kg)
21.5
Typical · median 21.4 kg
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

579 panels in the segment PERC 350-400 W
Metric This panel Median Position in segment Overall rank
Module efficiency 19.58% 19.90% Typical 12,623
Power density 195.9 199.0 Typical 12,594
Temperature coefficient -0.370 -0.350 Weak · bottom 16% 13,081
Weight per kWp 55.1 55.8 Typical 9,554
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 · 1 caution
Best for

Residential and commercial.

Not ideal for

Hot climates.

Watch-outs
-0.370 %/°C temperature coefficient

Bottom 16% of the PERC 350-400 W segment, against a median of -0.350.

Notes from the database
  • Efficiency of 19.6% matches the PERC 0-400W median
  • At 195.9 W/m² power density, roof space requirements are typical for PERC 0-400W panels
  • Temperature coefficient of -0.37%/°C matches the PERC 0-400W median
  • At 21.5 kg, weight matches the PERC 0-400W median
  • Ranked #12623 out of 14005 panels for efficiency in the database

Specifications

Open datasheet PDF
Nominal power (Pmax) 390 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 19.58 % Typical Segment median 19.90%
Vmpp · Impp 40.10 V · 9.73 A Operating point at max power
Voc · Isc 48.85 V · 10.03 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 Typical Typical · median 21.4 kg
Cells 72 · PERC Monocrystalline
Coefficient Pmax -0.370 %/°C Weak bottom 16% of its segment
Coefficient Voc · Isc -0.270 · 0.050 %/°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 80.2 % Equals 299 W guaranteed
Degradation 3.00 → 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
-0.370 %/°C against a segment median of -0.350
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Waaree WSM-390 390 W 19.58% -0.370 21.5 kg You are here
LX-440M/182-108+GG 440 W 23.07% -0.240 23.6 kg +50 W, cooler, +3.5 pp
GKA210M340W 340 W 23.00% - 16.2 kg -50 W, lighter, +3.4 pp
GKA210M360W 360 W 23.00% - 16.2 kg Lighter, +3.4 pp, +5 yr warranty
GKA210M380W (1/4*4*38) 380 W 23.00% - 17.1 kg Lighter, +3.4 pp, +5 yr warranty
GKA210M400W (1/2*4*20) 400 W 23.00% - 18.0 kg Lighter, +3.4 pp, +5 yr warranty
GKA210M400W (1/4*4*40) 400 W 23.00% - 18.0 kg Lighter, +3.4 pp, +5 yr warranty
GKA210M380W (1/2*4*19) 380 W 23.00% - 17.1 kg Lighter, +3.4 pp, +5 yr warranty
JT440SYK(B) 440 W 22.90% -0.240 23.0 kg +50 W, cooler, +3.3 pp
WS-320 320 W 16.06% -0.386 21.5 kg -70 W, hotter, -3.5 pp
WS-325 325 W 16.32% -0.386 21.5 kg -65 W, hotter, -3.3 pp
WS-330 330 W 16.57% -0.386 21.5 kg -60 W, hotter, -3.0 pp
WS-335 335 W 16.82% -0.386 21.5 kg -55 W, hotter, -2.8 pp
WS-340 340 W 17.07% -0.386 21.5 kg -50 W, hotter, -2.5 pp
WS-345 345 W 17.32% -0.386 21.5 kg -45 W, hotter, -2.3 pp
WS-350 350 W 17.57% -0.386 21.5 kg -40 W, hotter, -2.0 pp
WSM-380 380 W 19.08% -0.370 21.5 kg -10 W, -0.5 pp
SPR-MAX7-475 475 W 24.00% -0.270 21.1 kg Cooler, +4.4 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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