725Wp

Trina Solar Review

TSM-NEG21C.20 725W

Name: Trina Solar TSM-NEG21C.20 725W
Brand: Trina Solar

MonocrystallineBifacial

Datasheet

23.30%

Efficiency

233.4 Wp/m²

Power Density

-0.290%/°C

Temp. Coeff. Pmax chart

634W from 725W

Power after 30 years

Smart Insights (data-driven)

At 23.3% efficiency, this panel is on par with typical TOPCon 700-750W modules
At 233.4 W/m² power density, this panel generates 4.6 W/m² more per unit area than TOPCon 700-750W median (228.8 W/m²)
Temperature coefficient of -0.29%/°C matches the TOPCon 700-750W median
Bifacial design (80% factor) captures reflected light - adds 4-12% yield on ground-mount or white roof
In the top 6% for efficiency among all TOPCon panels

Price Offers 0

Shop	Country	Price	Price/kWp

Electrical Parameters (STC)

Nominal Power (Pmax)	725 Wp
Module Efficiency	23.30%
Voltage at Max Power (Vmpp)	41.50 V
Current at Max Power (Impp)	17.47 A
Open Circuit Voltage (Voc)	49.60 V
Short Circuit Current (Isc)	18.54 A
Max System Voltage	1500 V

Temperature Coefficients

Temp. Coeff. Pmax	-0.290%/°C
Temp. Coeff. Voc	-0.240%/°C
Temp. Coeff. Isc	0.040%/°C
NOCT	43°C

Cell Technology

Cell Type	Monocrystalline
Cell Count	132
Bifacial	Yes
Bifaciality Factor	80%

Dimensions & Weight

Length	2384 mm
Width	1303 mm
Height	33 mm
Weight	38.3 kg
Area	3.11 m²
Power Density	233.4 Wp/m²

Warranty

Product Warranty	12 years
Performance Warranty	30 years
End-of-Warranty Output	87.4%
First Year Degradation	1.00%
Annual Degradation	0.40%/year

Key Specifications

23.30%

Efficiency

725 Wp

Power

-0.29%/°C

Temp Coeff

30 yrs

Warranty

30-Year Degradation & Energy Production Simulation

Quick Presets

Irradiance (kWh/kWp/year) US avg: 1200-1800

Energy Price ($/kWh) Inflation: 0%

Energy Price Inflation (%/year)

Power after 30 years

Total Energy (30 yrs)

Energy Value

Efficiency & Power Over Time

Annual Energy Production

About the simulation: Calculations based on declared annual degradation (-%/year). Default irradiance (1200 kWh/kWp/year) is an average - check your exact value using PVGIS. Actual production depends on location, orientation, shading, and installation quality.

Power vs Cell Temperature Simulation (-0.290%/°C)

At 75°C (hot roof in summer):

Power: -

Power Loss: -

At Different Temperatures:

25°C (STC)	-
45°C	-
55°C	-
65°C	-
75°C	-

Your Temperature:

°C

Cell temperature of 75°C is typical for rooftop panels on a hot summer day at full irradiance. Temperature coefficient -0.290%/°C means power drops by this percentage for each degree above 25°C.

Bifacial Profit Calculator 80%

Select Surface Below Panel

What is albedo? Albedo is the fraction of sunlight reflected by a surface. Higher albedo (lighter surfaces) means more light reaches the back of bifacial panels, increasing total energy production.

Estimated Rear Gain

Front Power: -

Rear Gain: -

Total Effective Power: -

Calculation: Bifaciality (-) × Albedo × 0.6 (view factor)

This calculator uses a simplified model with default albedo values and a ground coverage factor of 0.6. Actual gain depends on installation conditions, tilt angle, mounting height, and season. For accurate calculations, we recommend measuring albedo on-site.

Sources: Sandia PVPMC (Albedo) · Bifacial Solar Guide · IEA PVPS

Similar Panels

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AIKO 680W

TSM-NEG21C.20 725W

Price Offers 0

Electrical Parameters (STC)

Temperature Coefficients

Cell Technology

Dimensions & Weight

Warranty

Key Specifications

30-Year Degradation & Energy Production Simulation

Efficiency & Power Over Time

Annual Energy Production

Power vs Cell Temperature Simulation (-0.290%/°C)

At 75°C (hot roof in summer):

At Different Temperatures:

Your Temperature:

Bifacial Profit Calculator 80%

Select Surface Below Panel

Estimated Rear Gain

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