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Waaree Brand review

WSD-400

400 Wp PERC
ComparePV verdict

Middle of its segment, modest efficiency

Rank 12,885 of 14,005
Compare panels Datasheet PDF
Power (Wp)
400
Weak · bottom 9%
Efficiency (%)
18.40
Weak · bottom 1%
Density (Wp/m²)
184.0
Weak · bottom 1%
Temp (%/°C)
-0.380
Weak · bottom 2%
Weight (kg)
23.5
Weak · 1.5 kg above median
Warranty (yrs)
25
Typical · median 25 yrs

The Waaree ADITYA SERIES is an advanced technological solution designed to maximize energy yields in diverse climatic conditions. These panels use high-efficiency silicon cells, which are characterized by an excellent response to diffused light, making them an ideal choice for the Polish market. Thanks to the use of a reinforced frame and low-iron tempered glass, the modules demonstrate high mechanical resistance to extreme loads, such as heavy snow or gusty winds. A key differentiator of this series is the PID-limiting technology, which directly translates into a longer installation lifespan and slower power degradation over time. The ADITYA SERIES effectively solves the problem of energy losses resulting from high temperatures, offering a favorable temperature coefficient, which stabilizes electricity production on hot days. It is a product dedicated to both demanding prosumers and commercial investors looking for a compromise between innovation and solid build quality. They are distinguished from the competition by a rigorous quality control process, ensuring the repeatability of the parameters of each module. By choosing this series, the user gains the assurance of failure-free system operation and a high aesthetic finish that goes hand in hand with the modern design of contemporary photovoltaics.

Ranking

954 panels in the segment PERC 400-450 W
Metric This panel Median Position in segment Overall rank
Module efficiency 18.40% 20.60% Weak · bottom 1% 13,130
Power density 184.0 206.2 Weak · bottom 1% 13,114
Temperature coefficient -0.380 -0.350 Weak · bottom 2% 13,397
Weight per kWp 58.8 53.0 Weak · bottom 16% 11,876
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
18.40% module efficiency

Bottom 1% of the PERC 400-450 W segment, against a median of 20.60%. Ranked 13,130th in the whole database.

184.0 watts per square metre

Bottom 1% of the PERC 400-450 W segment, against a median of 206.2. Ranked 13,114th in the whole database.

-0.380 %/°C temperature coefficient

Bottom 2% of the PERC 400-450 W segment, against a median of -0.350. Ranked 13,397th in the whole database.

Notes from the database
  • Efficiency of 18.4% is 2.2pp below the PERC 400-450W median (20.6%)
  • At 184.0 W/m², this panel generates 22.2 W/m² less per unit area than PERC 400-450W median (206.2 W/m²)
  • At -0.38%/°C, loses 0.03pp more power per degree than PERC 400-450W median (-0.35%/°C)
  • At 23.5 kg (1.5 kg above PERC 400-450W median of 22.0 kg), requires checking roof load capacity
  • In the top 94% for efficiency among all PERC panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 400 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 18.40 % Weak Segment median 20.60%
Vmpp · Impp 39.31 V · 10.18 A Operating point at max power
Voc · Isc 47.02 V · 10.75 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2094×1038×35 mm · 2.17 m² of roof
Weight 23.5 kg Weak Weak · 1.5 kg above median
Cells 144 · PERC Polycrystalline
Coefficient Pmax -0.380 %/°C Weak bottom 2% of its segment
Coefficient Voc · Isc -0.360 · 0.070 %/°C
NOCT 43 °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 309 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
-0.380 %/°C against a segment median of -0.350
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Waaree WSD-400 400 W 18.40% -0.380 23.5 kg You are here
GS10-B120-GF-450 450 W 20.79% -0.320 24.0 kg +50 W, cooler, +2.4 pp
GS10-B120-GF-445 445 W 20.56% -0.320 24.0 kg +45 W, cooler, +2.2 pp
GS10-B120-GF-440 440 W 20.33% -0.320 24.0 kg +40 W, cooler, +1.9 pp
LNSU-410M 410 W 20.31% -0.360 24.5 kg +10 W, cooler, +1.9 pp
GS10-B120-GF-435 435 W 20.10% -0.320 24.0 kg +35 W, cooler, +1.7 pp
LNSU-405M 405 W 20.06% -0.360 24.5 kg Cooler, heavier, +1.7 pp
CS3U-395P 395 W 19.90% -0.360 22.5 kg Cooler, lighter, +1.5 pp
LNSU-400M 400 W 19.81% -0.360 24.5 kg Cooler, heavier, +1.4 pp
LNSF-400M 400 W 19.76% -0.360 23.5 kg Cooler, +1.4 pp
WSD-385 385 W 17.71% -0.380 23.5 kg -15 W, -0.7 pp
WSD-390 390 W 17.94% -0.380 23.5 kg -10 W, -0.5 pp
WSD-395 395 W 18.17% -0.380 23.5 kg -0.2 pp
WSMD-420 420 W 19.32% -0.365 23.5 kg +20 W, +0.9 pp, +2 yr warranty
Bi-33-425 425 W 19.55% -0.365 23.5 kg +25 W, +1.2 pp, +2 yr warranty
GKA120N-PRO-590W 590 W 23.82% -0.300 26.7 kg +190 W, cooler, +5.4 pp
GKA120N-PRO-585W 585 W 23.62% -0.300 26.7 kg +185 W, cooler, +5.2 pp

Found 234 panels of the same or similar size to this one, within ±10 mm. See them here Found 325 panels of the same or similar size to this one, within ±25 mm. See them here Found 352 panels of the same or similar size to this one, within ±50 mm. See them here Found 1158 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
Can Waaree ADITYA SERIES panels withstand heavy snow and strong wind loads in Poland?
Yes, ADITYA SERIES modules feature a reinforced frame and low-iron tempered glass, allowing them to withstand high mechanical loads — typically up to 5400 Pa for snow and 2400 Pa for wind. These figures significantly exceed average Polish climate conditions, making the panels suitable for both pitched and flat roofs, even in areas with heavy snowfall.
What is PID mitigation technology in Waaree ADITYA panels and is it actually useful?
PID (Potential Induced Degradation) is a gradual power loss caused by voltage potential differences between the cell and frame, worsened by high humidity and temperature. The PID-mitigation technology used in ADITYA SERIES reduces this effect, so the panel loses efficiency more slowly over its lifetime. In practice, this means more stable energy yields throughout the 25-year power warranty period.
What warranty do Waaree ADITYA SERIES 400 Wp panels come with?
The manufacturer provides a 10-year product warranty covering material and workmanship defects, plus a 25-year power output warranty. This means the panel should still deliver the guaranteed performance level specified in the datasheet after 25 years, giving investors a predictable return on investment across a full generation, or even two, of solar system operation.
Do Waaree ADITYA SERIES panels lose power on hot days?
ADITYA SERIES uses PERC cells with a favorable temperature coefficient, which limits power loss at high module operating temperatures. As a result, the panels maintain more stable current output on hot, sunny days compared to older cell technologies — an important factor for roof installations with poor ventilation, where modules tend to heat up more.
Is Waaree ADITYA SERIES a bifacial panel?
No, ADITYA SERIES is a mono-facial panel line built with high-efficiency PERC silicon cells rated up to 400 Wp. If you're looking for additional energy yield from reflected light on the rear side of the module, consider a different bifacial series from Waaree — this line instead focuses on maximizing efficiency and durability in a standard single-sided design.
Is Waaree a reputable solar panel manufacturer, and where is it based?
Waaree is an India-based Tier 1 manufacturer, meaning it operates its own production lines, maintains stable financials, and is regularly audited for project bankability. The ADITYA SERIES undergoes strict quality control at every production stage, ensuring consistent module parameters — an important factor for larger installations where uniform panel performance matters.
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