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Shinson Technology S655M66P4BF
Shinson Technology Brand review

S655M66P4BF

655 Wp Monocrystalline Bifacial 3000%
ComparePV verdict

Middle of its segment, needs the roof space

Rank 983 of 14,005
Compare panels Datasheet PDF
Power (Wp)
655
Typical for its class
Efficiency (%)
21.10
Weak · bottom 8%
Density (Wp/m²)
210.9
Weak · bottom 8%
Temp (%/°C)
-0.340
Weak · bottom 15%
Weight (kg)
38.0
Weak · 5.5 kg above median
Warranty (yrs)
30
Typical · median 30 yrs

The Shinson Technology S-Max SXXXM66P4BF series redefines performance standards through the use of advanced bifacial technology, which allows for efficient clean energy generation from both sides of the module. This design is particularly beneficial in the context of solar conditions in Poland, where utilizing light reflected from the ground significantly increases the total annual yield from the installation. A key distinguishing feature of the series is the integration of high-efficiency cells, which translates into minimal light-induced degradation and stable operation even under diffuse radiation conditions. These modules effectively solve the problem of limited mounting space, offering maximum power density while maintaining exceptional mechanical resistance to snow and wind loads. The double tempered glass used not only effectively protects the silicon against micro-cracks but also extends the system's lifespan, making it a secure capital investment for decades. This solution is designed for professional investors implementing large-scale projects and commercial rooftop systems that require the highest operational reliability. Compared to traditional panels, the S-Max series offers an excellent bifaciality factor, positioning it as a leader in cost-efficiency for modern photovoltaic farms where every kilowatt-hour obtained per square meter of available ground or roof space counts.

Ranking

5,245 panels in the 555-755 W band, all technologies
Metric This panel Median Position in segment Overall rank
Module efficiency 21.10% 22.50% Weak · bottom 8% 9,297
Power density 210.9 225.3 Weak · bottom 8% 9,459
Temperature coefficient -0.340 -0.290 Weak · bottom 15% 8,778
Weight per kWp 58.0 53.1 Weak · bottom 8% 11,517
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

0 positive · 3 caution
Not ideal for

Roofs where every square metre has to count, weight-limited structures and tight roof space.

Watch-outs
210.9 watts per square metre

Bottom 8% of the 555-755 W band, against a median of 225.3. Ranked 9,459th in the whole database.

58.0 kg per kWp

Bottom 8% of the 555-755 W band, against a median of 53.1. Ranked 11,517th in the whole database.

21.10% module efficiency

Bottom 8% of the 555-755 W band, against a median of 22.50%. Ranked 9,297th in the whole database.

Notes from the database
  • At 21.1% efficiency, this panel is 0.7pp below the database median of 21.8%
  • 210.9 W/m² power density is 7.2 W/m² below database median (218.1 W/m²) - requires larger installation area
  • At -0.34%/°C, loses 0.04pp more power per degree than database median (-0.30%/°C)
  • At 38.0 kg, this panel is 11.5 kg heavier than the database median (26.5 kg) - more demanding for installation crews
  • In the top 66% for efficiency among all N-type panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 655 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 21.10 % Weak Segment median 22.50%
Vmpp · Impp 37.90 V · 17.31 A Operating point at max power
Voc · Isc 45.70 V · 18.40 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 38.0 kg Weak Weak · 5.5 kg above median
Cells 132 Monocrystalline
Bifaciality 3000 % Rear output as a share of front
Coefficient Pmax -0.340 %/°C Weak bottom 15% of its segment
Coefficient Voc · Isc -0.250 · 0.040 %/°C
NOCT 43 °C At 800 W/m², 20 °C ambient
Product warranty 30 years Hardware defects only
Performance warranty 30 years Typical median 30 yrs · median 30 yrs
Degradation 0.50 % Per year after the first

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
-0.340 %/°C against a segment median of -0.290
-
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
Shinson Technology S655M66P4BF 655 W 21.10% -0.340 38.0 kg You are here
AIKO-A650-MAE72Mw 650 W 25.20% -0.260 27.0 kg Cooler, lighter, +4.1 pp
AIKO-A680-MDE72Mw 680 W 25.20% -0.260 29.0 kg Cooler, lighter, +4.1 pp
AIKO-A675-MDE72Mw 675 W 25.00% -0.260 29.0 kg Cooler, lighter, +3.9 pp
AIKO-A645-MAE72Mw 645 W 25.00% -0.260 27.0 kg Cooler, lighter, +3.9 pp
AIKO-A700-MAE78Dw 700 W 25.00% -0.260 34.5 kg +45 W, cooler, +3.9 pp
AIKO-A695-MAE78Dw 695 W 24.90% -0.260 34.5 kg +40 W, cooler, +3.8 pp
AIKO-G670-MCH72Mw 670 W 24.80% -0.260 28.2 kg Cooler, lighter, +3.7 pp
S650M66P4BF 650 W 20.90% -0.340 38.0 kg -0.2 pp
S660M66P4BF 660 W 21.20% -0.340 38.0 kg Very close match
S665M66P4BF 665 W 21.40% -0.340 38.0 kg +10 W, +0.3 pp
S670M66P4 670 W 21.60% -0.340 34.4 kg Lighter, +0.5 pp, -5 yr warranty
S680M66NT4BF 680 W 21.89% -0.310 38.0 kg +25 W, cooler, +0.8 pp
S685M66NT4BF 685 W 22.05% -0.310 38.0 kg +30 W, cooler, +0.9 pp
AIKO-A805-GRH78Dw 805 W 25.10% -0.260 39.8 kg +150 W, cooler, +4.0 pp
AIKO-A800-GRH78Dw 800 W 24.90% -0.260 39.8 kg +145 W, cooler, +3.8 pp
AIKO-A795-GRH78Dw 795 W 24.80% -0.260 39.8 kg +140 W, cooler, +3.7 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
Does the bifacial technology in the Shinson S-Max SXXXM66P4BF series actually boost energy output in Poland?
Yes. The bifacial design lets S-Max modules capture sunlight on both the front and rear surfaces — the rear absorbs light reflected from the ground, snow, or a light-colored rooftop. In Polish conditions, where a significant portion of irradiance arrives as diffuse or reflected light, a bifacial module can yield 5–25% more annual energy compared to a monofacial module of the same nameplate power.
What warranty does the Shinson S-Max SXXXM66P4BF series come with, and what does it cover?
The S-Max SXXXM66P4BF series carries a 30-year product warranty covering material defects and workmanship, plus a 30-year linear power warranty guaranteeing minimum output retention over three decades. This is one of the longest warranties available on the market today and makes the series a reliable long-term asset for commercial rooftop systems and utility-scale PV farms.
Does the double tempered glass construction in the Shinson S-Max SXXXM66P4BF really protect against cell microcracks?
Yes. The glass-glass structure removes the rear backsheet, which is the primary source of thermomechanical stress that causes microcracks. Both tempered glass panes form a rigid, symmetric enclosure that minimizes deformation during temperature cycling. This also increases resistance to snow and wind loads — an important factor for Polish winters — and extends the module's service life well beyond 30 years.
What installation types is the Shinson S-Max SXXXM66P4BF designed for — is it suitable for warehouse rooftops or industrial facilities?
The S-Max SXXXM66P4BF was specifically engineered for commercial and utility-scale projects: ground-mounted PV farms and large rooftop systems on warehouses, manufacturing halls, and commercial buildings. Its high power density at up to 665 Wp per module maximizes output per square meter of limited roof space. The glass-glass mechanical durability also makes it well-suited for structures exposed to high wind loads.
What is the peak power of the Shinson S-Max SXXXM66P4BF and what does it mean for project economics?
The S-Max SXXXM66P4BF reaches a peak power of 665 Wp under STC conditions. In practice, a 1 MWp plant requires roughly 1,504 modules — fewer than with lower-power 500–550 Wp panels. Fewer modules mean reduced BoS costs: less racking, cabling, and installation labor. This directly improves the project's LCOE, making the series highly cost-competitive for utility-scale and commercial PV developers.
Do the Shinson S-Max SXXXM66P4BF panels perform well on cloudy days and in low-light conditions?
Yes. The cells used in the S-Max series feature low light-induced degradation (LID) and maintain stable output under diffuse irradiance typical of Polish autumn and winter skies. The bifacial architecture further captures reflected light from the ground even under overcast conditions. As a result, the series sustains a high fill factor on its I-V curve even well below the nominal irradiance of 1,000 W/m².
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