Skip to main content
Waaree Brand review

WS-140 /12V

140 Wp Polycrystalline
ComparePV verdict

Middle of its segment, modest efficiency

Rank 13,969 of 14,005
Compare panels Datasheet PDF
Power (Wp)
140
Typical for its class
Efficiency (%)
13.92
Weak · bottom 10%
Density (Wp/m²)
139.2
Weak · bottom 12%
Temp (%/°C)
-0.386
Typical · median -0.370
Weight (kg)
13.0
Weak · 1.5 kg above median
Warranty (yrs)
10
Weak · bottom 13%

The Waaree ARUN series (WS-100 to WS-235) are silicon modules designed for stable operation in typical real-world operating conditions - from domestic installations to utility and off-grid applications. A key feature is polycrystalline cell technology, valued where predictable performance and a good quality-to-cost ratio of the entire system are important. In practice, this means easier design of installations with repeatable yields, without overpaying for solutions you don’t use.

A major advantage of the series is the wide range of power options and voltage configurations, enabling the modules to be adapted both to traditional rooftop installations and to battery systems, lighting, monitoring, or recreational facilities. Users gain greater design flexibility - it’s easier to match the number of panels to the inverter or charge controller, minimizing losses from mismatching.

This is an option for investors who expect proven construction and predictable operation, rather than marketing promises.

Ranking

331 panels in the 40-240 W band, all technologies
Metric This panel Median Position in segment Overall rank
Module efficiency 13.92% 15.91% Weak · bottom 10% 13,925
Power density 139.2 159.1 Weak · bottom 12% 13,907
Temperature coefficient -0.386 -0.370 Typical 13,485
Weight per kWp 92.9 70.9 Weak · bottom 14% 13,877
Performance warranty 10 yrs 25 yrs Weak · bottom 13% 13,806
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

0 positive · 3 caution
Best for

Residential and off-grid.

Not ideal for

Tight roof space, roofs where every square metre has to count and owners who want a long output guarantee.

Watch-outs
13.92% module efficiency

Bottom 10% of the 40-240 W band, against a median of 15.91%.

139.2 watts per square metre

Bottom 12% of the 40-240 W band, against a median of 159.1.

10 year performance warranty

Bottom 13% of the 40-240 W band, against a median of 25 yrs.

Notes from the database
  • At 13.9% efficiency, this panel is 7.9pp below the database median of 21.8%
  • At 139.2 W/m², this panel generates 78.9 W/m² less per unit area than database median (218.1 W/m²)
  • -0.39%/°C temperature coefficient - 0.09pp worse than database median (-0.30%/°C), expect higher hot weather losses
  • At 13.0 kg, this panel is 13.5 kg lighter than database median (26.5 kg) - easier handling during installation
  • Ranked #13925 out of 14005 panels for efficiency in the database

Specifications

Open datasheet PDF
Nominal power (Pmax) 140 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 13.92 % Weak Segment median 15.91%
Vmpp · Impp 17.59 V · 7.93 A Operating point at max power
Voc · Isc 22.37 V · 8.34 A Sizes the string length
Max system voltage 1000 V Longer strings than 1000 V modules
Dimensions 1490×675×35 mm · 1.01 m² of roof
Weight 13.0 kg Weak Weak · 1.5 kg above median
Coefficient Pmax -0.386 %/°C Typical median -0.370 of its segment
Coefficient Voc · Isc -0.278 · 0.051 %/°C
NOCT 46 °C At 800 W/m², 20 °C ambient
Product warranty 5 years Hardware defects only
Performance warranty 10 years Weak bottom 13% · median 25 yrs

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 -0.370
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Waaree WS-140 /12V 140 W 13.92% -0.386 13.0 kg You are here
MYP3036-180 180 W 17.65% -0.370 11.3 kg +40 W, +3.7 pp, +15 yr warranty
MYP3036-180 180 W 17.65% -0.370 11.3 kg +40 W, +3.7 pp, +15 yr warranty
MYP3036-175 175 W 17.16% -0.370 11.3 kg +35 W, +3.2 pp, +15 yr warranty
MYP3036-175 175 W 17.16% -0.370 11.3 kg +35 W, +3.2 pp, +15 yr warranty
MYM2036-170 170 W 17.10% -0.370 11.2 kg +30 W, +3.2 pp, +15 yr warranty
MYP3036-170 170 W 16.69% -0.370 11.3 kg +30 W, +2.8 pp, +15 yr warranty
MYP3036-170 170 W 16.67% -0.370 11.3 kg +30 W, +2.8 pp, +15 yr warranty
MYM2036-165 165 W 16.60% -0.370 11.2 kg +25 W, +2.7 pp, +15 yr warranty
WS-190 /24V 190 W 16.33% -0.386 13.0 kg +50 W, +2.4 pp
WS-125 /24V 125 W 12.43% -0.386 13.0 kg -15 W, -1.5 pp
WS-130 /24V 130 W 12.93% -0.386 13.0 kg -10 W, -1.0 pp
WS-145 /12V 145 W 14.42% -0.386 13.0 kg +0.5 pp
ZEUS 1.2 FullBlack 280W 280 W 23.31% -0.260 14.3 kg +140 W, +9.4 pp, +20 yr warranty
GKA182M285W 285 W 23.00% - 10.8 kg +145 W, +9.1 pp, +20 yr warranty
GKA182M240W 240 W 23.00% - 10.8 kg +100 W, +9.1 pp, +20 yr warranty
GKA182M260W 260 W 23.00% - 10.8 kg +120 W, +9.1 pp, +20 yr warranty

Found 92 panels of the same or similar size to this one, within ±10 mm. See them here Found 92 panels of the same or similar size to this one, within ±25 mm. See them here Found 94 panels of the same or similar size to this one, within ±50 mm. See them here Found 129 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
What's the difference between the polycrystalline technology used in Waaree ARUN panels and popular monocrystalline modules?
Polycrystalline cells in the ARUN series have slightly lower efficiency than monocrystalline (around 15.6%), but offer more predictable performance and lower cost per Wp. For installations where roof area is less critical than budget - such as residential or utility projects - this is a sensible trade-off. The power temperature coefficient is -0.39%/°C, a typical value for this technology.
What's the maximum power output in the Waaree ARUN series, and how do I choose the right variant for my system?
The series spans WS-100 to WS-235, with the most powerful modules reaching up to 220 Wp. A wide range of power ratings and voltage configurations (36-cell and 72-cell versions) makes it easy to match panel count to a specific inverter or charge controller - whether for a rooftop installation or a smaller battery-based system powering lighting or monitoring equipment.
What warranty applies to Waaree ARUN panels?
The manufacturer provides a 5-year product warranty covering material and workmanship defects, plus a 10-year power performance warranty. This is a standard level of protection for polycrystalline modules in this price segment, sufficient for most residential and utility installations, though shorter than premium series that offer warranties extending to 25-30 years.
Are Waaree ARUN panels suitable for off-grid and battery-based systems?
Yes, this is one of the series' main use cases. Thanks to the availability of lower power variants and different voltage configurations, ARUN modules integrate easily with MPPT or PWM charge controllers in off-grid setups powering lighting, monitoring, pumps, or recreational properties. The flexibility in power selection minimizes losses from mismatching the panel to battery capacity.
Do Waaree ARUN panels perform well in low temperatures and harsh weather conditions?
Yes, the modules are rated for operation between -40°C and 85°C, making them suitable for continental climates with cold winters. The design resists potential-induced degradation (PID), and tempered low-iron glass provides resistance to hail and snow loads. The panels also have confirmed resistance to salt mist and ammonia exposure.
Is Waaree a proven Tier 1 manufacturer, and is it worth buying panels made in India?
Yes, Waaree is classified as a Tier 1 manufacturer, meaning it meets the financial stability, production scale, and bankability criteria required by project financiers. The company is headquartered in India and is one of Asia's largest PV module manufacturers, translating into competitive pricing while maintaining quality standards comparable to Chinese producers.
Add to compare