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TN Solar Brand review

SE6-66HBD-695

695 Wp HJT Bifacial 85%
ComparePV verdict

Space saver, weak in heat

Rank 290 of 14,005
Compare panels Datasheet PDF
Power (Wp)
695
Strong · top 15%
Efficiency (%)
22.37
Typical · median 22.20%
Density (Wp/m²)
223.7
Strong · top 16%
Temp (%/°C)
-0.260
Weak · bottom 24%
Weight (kg)
38.7
Typical · median 38.5 kg
Warranty (yrs)
30
Typical · median 30 yrs

The TN Solar SE6-66HBD series is designed for installations where maximizing energy yield per square meter is the priority. These are bifacial modules that can utilize reflected light from the ground, significantly increasing power generation compared to traditional monofacial panels. The HJT technology ensures stable performance under a wide range of conditions and helps minimize losses at high temperatures, which is particularly important for roofs of warehouses and high-density solar farms. The glass-glass construction improves mechanical strength and long-term durability, which is crucial under wind and snow loads. The series also features long warranties and a focus on maintaining high efficiency over time, making it easier to plan the return on investment. The SE6-66HBD is a good choice for PV farms, carports, and large commercial rooftops, where the combination of bifaciality, HJT technology, and robust construction provides a significant advantage.

Ranking

61 panels in the segment HJT 650-700 W
Metric This panel Median Position in segment Overall rank
Module efficiency 22.37% 22.20% Typical 4,970
Power density 223.7 222.1 Strong · top 16% 4,877
Temperature coefficient -0.260 -0.240 Weak · bottom 24% 511
Weight per kWp 55.7 55.7 Typical 10,084
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

1 positive · 1 caution
Best for

Commercial, utility-scale and hot-climate.

Not ideal for

Hot climates.

Strengths
223.7 watts per square metre

Top 16% of the HJT 650-700 W segment, against a median of 222.1.

Watch-outs
-0.260 %/°C temperature coefficient

Bottom 24% of the HJT 650-700 W segment, against a median of -0.240.

Notes from the database
  • Efficiency of 22.4% matches the HJT 650-700W median
  • At 223.7 W/m² power density, roof space requirements are typical for HJT 650-700W panels
  • Temperature coefficient of -0.26%/°C is 0.02pp worse than HJT 650-700W median (-0.24%/°C) - higher losses in summer heat
  • Bifaciality factor of 85% can add 4-13% extra yield with reflective mounting surface
  • Ranked #4970 out of 14005 panels for efficiency in the database

Specifications

Open datasheet PDF
Nominal power (Pmax) 695 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 22.37 % Typical Segment median 22.20%
Vmpp · Impp 41.95 V · 16.57 A Operating point at max power
Voc · Isc 49.98 V · 17.37 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2384×1303×35 mm · 3.11 m² of roof
Weight 38.7 kg Typical Typical · median 38.5 kg
Cells 132 · HJT Monocrystalline
Bifaciality 85 % Rear output as a share of front
Coefficient Pmax -0.260 %/°C Weak bottom 24% of its segment
Coefficient Voc · Isc -0.240 · 0.040 %/°C
NOCT 44 °C At 800 W/m², 20 °C ambient
Product warranty 25 years Hardware defects only
Performance warranty 30 years Typical median 30 yrs · median 30 yrs
End-of-warranty output 88.0 % Equals 611 W guaranteed
Degradation 1.00 → 0.38 % First year, then annual

Datasheet charts

Open datasheet PDF

Measured curves published by TN Solar in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 695 Wp appear here. The rest cover the whole series.

Warranty for Power Output Warranty for Power Output Whole series Cell Temperature 25°C Cell Temperature 25°C Whole series Irradiance: AM1.5, 1000W/m² Irradiance: AM1.5, 1000W/m² Whole series

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
-0.260 %/°C against a segment median of -0.240
-
Bifacial gain
Rear gain over light concrete: -
-

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

Alternatives

All TN Solar panels
Filter these
Size
Panel Power Eff. Temp. Weight Difference
TN Solar SE6-66HBD-695 695 W 22.37% -0.260 38.7 kg You are here
AIKO-A650-MAE72Mw 650 W 25.20% -0.260 27.0 kg -45 W, lighter, +2.8 pp
AIKO-A680-MDE72Mw 680 W 25.20% -0.260 29.0 kg -15 W, lighter, +2.8 pp
AIKO-A675-MDE72Mw 675 W 25.00% -0.260 29.0 kg -20 W, lighter, +2.6 pp
AIKO-A645-MAE72Mw 645 W 25.00% -0.260 27.0 kg -50 W, lighter, +2.6 pp
AIKO-A700-MAE78Dw 700 W 25.00% -0.260 34.5 kg Lighter, +2.6 pp
AIKO-A695-MAE78Dw 695 W 24.90% -0.260 34.5 kg Lighter, +2.5 pp
AIKO-G670-MCH72Mw 670 W 24.80% -0.260 28.2 kg -25 W, lighter, +2.4 pp
SE6-66HBD-700 700 W 22.53% -0.260 38.7 kg Very close match
SE6-66HBD-705 705 W 22.70% -0.260 38.7 kg +10 W, +0.3 pp
SE6-66HBD-710 710 W 22.86% -0.260 38.7 kg +15 W, +0.5 pp
SE6-66HBD-715 715 W 23.02% -0.260 38.7 kg +20 W, +0.6 pp
AIKO-A805-GRH78Dw 805 W 25.10% -0.260 39.8 kg +110 W, heavier, +2.7 pp
AIKO-A800-GRH78Dw 800 W 24.90% -0.260 39.8 kg +105 W, heavier, +2.5 pp
AIKO-A795-GRH78Dw 795 W 24.80% -0.260 39.8 kg +100 W, heavier, +2.4 pp
AIKO-A790-GRH78Dw 790 W 24.60% -0.260 39.8 kg +95 W, heavier, +2.2 pp
TSM-NEG21C.20Q-760 760 W 24.50% -0.260 38.3 kg +65 W, +2.1 pp

Found 1390 panels of the same or similar size to this one, within ±10 mm. See them here Found 1400 panels of the same or similar size to this one, within ±25 mm. See them here Found 1400 panels of the same or similar size to this one, within ±50 mm. See them here Found 1432 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
How does HJT cell technology in TN Solar SE6-66HBD panels differ from classic PERC cells?
HJT (heterojunction) cells combine crystalline silicon with layers of amorphous silicon, delivering higher efficiency and lower power loss at high temperatures compared to classic PERC cells. This allows SE6-66HBD panels to perform better in summer on hall roofs and solar farms where modules heat up significantly. HJT also has a lower temperature coefficient, resulting in higher real annual energy yield.
Does the bifacial design of SE6-66HBD panels actually increase energy production?
Yes, the rear side of the module captures light reflected from the ground, roof, or light-colored surfaces, providing several to over a dozen percent extra energy compared to a monofacial panel. The effect is strongest when mounted above light gravel, a white roofing membrane, or on ground-mounted structures with increased clearance. On typical pitched roofs, the gain is smaller but still noticeable.
What warranty comes with TN Solar SE6-66HBD panels?
The manufacturer provides a 25-year product warranty and a 30-year power output warranty. This means TN Solar commits to maintaining adequate module performance over three decades of operation, helping investors plan the payback period of their PV installation and estimate long-term project profitability.
What is the maximum power of the SE6-66HBD panel and what installations is it suited for?
The module reaches up to 715 Wp of maximum power, placing it in the high-power segment designed mainly for large commercial installations, solar farms, and carports. High unit power reduces the number of modules needed to reach a target system capacity, lowering costs for mounting structures and cabling across large areas.
Does the glass-glass construction of the SE6-66HBD improve durability and damage resistance?
Yes, the glass-glass design replaces the standard plastic backsheet with a second layer of tempered glass, significantly increasing rigidity and mechanical resistance. This construction handles snow and wind loads better and reduces the risk of microcracks and degradation over time, resulting in longer module lifespan under demanding operating conditions.
Are TN Solar SE6-66HBD panels a good choice for ground-mounted installations or solar farms?
Yes, thanks to the combination of high power up to 715 Wp, bifacial technology, and glass-glass construction, the SE6-66HBD series performs especially well on solar farms and large ground-mounted installations, where the rear side of the module can effectively use light reflected from the ground. The robust build also handles the weather conditions typical of open terrain well.
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