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Tata Power Solar TP637LG10B
Tata Power Solar Brand review

TP637LG10B

637 Wp PERC Bifacial 70%
ComparePV verdict

Efficiency leader, weak in heat

Rank 2,188 of 14,005
Compare panels Datasheet PDF
Power (Wp)
637
Strong · top 18%
Efficiency (%)
22.87
Strong · top 1%
Density (Wp/m²)
228.7
Strong · top 1%
Temp (%/°C)
-0.370
Weak · bottom 2%
Weight (kg)
36.0
Typical · median 34.0 kg
Warranty (yrs)
30
Typical · median 30 yrs

The Tata Power Solar TPxx0LG10B (glass-glass) series are bifacial modules with a glass-glass construction, designed for high durability and stable operation in demanding conditions. The use of a glass-glass architecture increases resistance to moisture, microcracks, and material aging, which realistically reduces the risk of yield losses over the long term. Thanks to the bifacial technology, the module can also utilize light reflected from the ground - this is a practical advantage on roofs with light membranes, on ground with proper site preparation, and in industrial installations where every additional percentage of production counts.

This series uses monocrystalline cells in an optimized configuration for operation under variable sunlight, which translates to improved performance in low light and more predictable yields in the Polish climate. The TPxx0LG10B will be suitable for PV farms, carports, and larger commercial roofs, where long lifespan and stable performance over time are the priorities.

Ranking

217 panels in the segment PERC 600-650 W
Metric This panel Median Position in segment Overall rank
Module efficiency 22.87% 21.38% Strong · top 1% 2,531
Power density 228.7 213.8 Strong · top 1% 2,447
Temperature coefficient -0.370 -0.340 Weak · bottom 2% 13,081
Weight per kWp 56.5 55.7 Typical 10,693
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

2 positive · 1 caution
Best for

Commercial and utility-scale.

Not ideal for

Hot climates.

Strengths
22.87% module efficiency

Top 1% of the PERC 600-650 W segment, against a median of 21.38%. Ranked 2,531st in the whole database.

228.7 watts per square metre

Top 1% of the PERC 600-650 W segment, against a median of 213.8. Ranked 2,447th in the whole database.

Watch-outs
-0.370 %/°C temperature coefficient

Bottom 2% of the PERC 600-650 W segment, against a median of -0.340. Ranked 13,081st in the whole database.

Notes from the database
  • Efficiency of 22.9% is 1.5pp above the PERC 600-650W median (21.4%)
  • 228.7 W/m² power density - 14.9 W/m² more than PERC 600-650W median (213.8 W/m²), more power per roof area
  • Temperature coefficient of -0.37%/°C is 0.03pp worse than PERC 600-650W median (-0.34%/°C) - higher losses in summer heat
  • At 36.0 kg, this panel is 2.0 kg heavier than the PERC 600-650W median (34.0 kg) - more demanding for installation crews
  • Bifacial design (70% factor) captures reflected light - adds 4-10% yield on ground-mount or white roof

Specifications

Open datasheet PDF
Nominal power (Pmax) 637 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 22.87 % Strong Segment median 21.38%
Vmpp · Impp 47.16 V · 13.50 A Operating point at max power
Voc · Isc 54.88 V · 13.97 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2456×1134×35 mm · 2.79 m² of roof
Weight 36.0 kg Typical Typical · median 34.0 kg
Cells 156 · PERC Monocrystalline
Bifaciality 70 % Rear output as a share of front
Coefficient Pmax -0.370 %/°C Weak bottom 2% of its segment
Coefficient Voc · Isc -0.280 · 0.050 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 12 years Hardware defects only
Performance warranty 30 years Typical median 30 yrs · median 30 yrs
End-of-warranty output 80.0 % Equals 510 W guaranteed
Degradation 2.50 → 0.60 % 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
-
With bifacial gain
-

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

Heat losses
-0.370 %/°C against a segment median of -0.340
-
Bifacial gain
Rear gain over light concrete: -
-

Model: bifaciality × albedo × 0.6 view factor. A first-order estimate, not a yield simulation.

Filter these
Size
Panel Power Eff. Temp. Weight Difference
Tata Power Solar TP637LG10B 637 W 22.87% -0.370 36.0 kg You are here
AIKO-A650-MAE72Mw 650 W 25.20% -0.260 27.0 kg Cooler, lighter, +2.3 pp
AIKO-A680-MDE72Mw 680 W 25.20% -0.260 29.0 kg Cooler, lighter, +2.3 pp
AIKO-A675-MDE72Mw 675 W 25.00% -0.260 29.0 kg Cooler, lighter, +2.1 pp
AIKO-A645-MAE72Mw 645 W 25.00% -0.260 27.0 kg Cooler, lighter, +2.1 pp
AIKO-G670-MCH72Mw 670 W 24.80% -0.260 28.2 kg Cooler, lighter, +1.9 pp
LR7-72HVHF-670M 670 W 24.80% -0.260 28.5 kg Cooler, lighter, +1.9 pp
AIKO-A640-MAE72Mw 640 W 24.80% -0.260 27.0 kg Cooler, lighter, +1.9 pp
TP570LG10B 570 W 20.47% -0.370 36.0 kg -67 W, -2.4 pp
TP575LG10B 575 W 20.65% -0.370 36.0 kg -62 W, -2.2 pp
TP580LG10B 580 W 20.83% -0.370 36.0 kg -57 W, -2.0 pp
TP585LG10B 585 W 21.00% -0.370 36.0 kg -52 W, -1.9 pp
TP590LG10TB 590 W 21.18% -0.360 31.0 kg Lighter, -1.7 pp, -5 yr warranty
AIKO-A700-MAE78Dw 700 W 25.00% -0.260 34.5 kg +63 W, cooler, +2.1 pp
AIKO-A695-MAE78Dw 695 W 24.90% -0.260 34.5 kg +58 W, cooler, +2.0 pp
JKM650-670N-66QL6-BDV (670W class) 670 W 24.80% -0.260 32.5 kg Cooler, lighter, +1.9 pp

Found 613 panels of the same or similar size to this one, within ±10 mm. See them here Found 616 panels of the same or similar size to this one, within ±25 mm. See them here Found 616 panels of the same or similar size to this one, within ±50 mm. See them here Found 1813 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
What is the difference between the TPxx0LG10B (glass-glass) series and a standard backsheet version?
In glass-glass construction the cells are laminated between two glass sheets instead of glass and a polymer backsheet. This makes the module more airtight, less prone to moisture ingress and microcracks, and slower to degrade over time. It also enables bifacial operation, since the rear side stays transparent to light. The trade-off is a heavier panel compared to a backsheet version.
Are Tata Power Solar TPxx0LG10B panels suitable for a residential sloped roof?
This series reaches up to 642 Wp and has large physical dimensions, so it is mainly used on PV farms, carports, and larger commercial or industrial roofs where installation scale matters. It can be installed on a sloped residential roof, but roof load capacity and available mounting space need to be checked first - smaller residential modules are usually a better fit for single-family homes.
How much extra energy can the bifacial technology provide in these panels?
The actual bifacial gain depends on the mounting environment - the brighter the ground surface and the higher the module is raised off the ground, the more reflected light reaches the rear side. In practice, on roofs with a light-colored membrane, gravel, or a properly prepared ground surface, you can expect a few to over ten percent extra output compared to a standard monofacial panel, without increasing the installed area.
What warranty comes with the TPxx0LG10B modules and what does it cover?
Tata Power Solar offers a 12-year product warranty covering material and workmanship defects, plus a 30-year power output warranty. This means the manufacturer guarantees a defined level of power generation over three decades, which is a key factor when calculating the return on investment for a PV installation built around this series.
Do Tata Power Solar TPxx0LG10B panels perform well in low-light and cooler climate conditions?
The monocrystalline PERC cells used in this series are optimized for variable and diffuse irradiance, which translates into better performance under cloudy skies or early morning light. That is a real advantage in a climate like Poland's, where full sun is not the norm for most of the year, and consistent output under such conditions meaningfully affects annual energy yield.
Is Tata Power Solar a Tier 1 manufacturer, and is it trustworthy for a large PV investment?
Yes, Tata Power Solar is a Tier 1 manufacturer headquartered in India, with a long track record in solar cell and module production and a financially stable position confirmed by independent industry rankings. Tier 1 status means lower risk of warranty support issues down the line, which matters most for farm-scale and commercial installations designed to operate for decades.
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