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Solitek Brand review

Forza 650

650 Wp TOPCon Bifacial
ComparePV verdict

Solid all-round for its segment

Rank 551 of 14,005
Compare panels Datasheet PDF
Power (Wp)
650
Weak · bottom 13%
Efficiency (%)
22.97
Typical · median 22.40%
Density (Wp/m²)
229.7
Typical · median 223.7
Temp (%/°C)
-0.300
Typical · median -0.290
Weight (kg)
34.2
Typical · median 34.6 kg
Warranty (yrs)
30
Typical · median 30 yrs

The Forza series is SoliTek's response to the growing demands of the market for large-scale and commercial installations. By utilizing N-type TOPCon cells in a bifacial configuration, the panels generate energy from both the front and back sides, resulting in significantly higher yields in ground-mounted and reflective installations. The construction, based on a 2+2 mm double-sided glass with an anti-reflective coating, eliminates the risk of PID (Potential Induced Degradation) and provides exceptional mechanical strength - the panels easily withstand extreme snow loads, making them an ideal choice for Polish climatic conditions. The white aluminum frame aesthetically enhances the Forza, which investors appreciate for its consistent appearance on roofs or ground. The panels are certified for resistance to saline fog and ammonia, opening up possibilities for use in coastal and agricultural areas. A 25-year product warranty and a 30-year power warranty with an exceptionally low annual degradation rate are key advantages for installers and investors seeking modules with a long, reliable lifespan. Furthermore, the Forza is approved for the FER X program, which facilitates the qualification of installations for European funding and support programs for renewable energy.

Ranking

249 panels in the segment TOPCon 650-700 W
Metric This panel Median Position in segment Overall rank
Module efficiency 22.97% 22.40% Typical 2,237
Power density 229.7 223.7 Typical 2,160
Temperature coefficient -0.300 -0.290 Typical 6,093
Weight per kWp 52.6 53.2 Typical 6,240
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 · 0 caution
Notes from the database
  • 23.0% module efficiency - 0.6pp better than the TOPCon 650-700W median of 22.4%
  • Power density of 229.7 W/m² packs 6.0 W/m² more into the same footprint vs TOPCon 650-700W median (223.7 W/m²)
  • Temperature coefficient of -0.30%/°C matches the TOPCon 650-700W median
  • Ranked #2237 out of 14005 panels for efficiency in the database

Specifications

Open datasheet PDF
Nominal power (Pmax) 650 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 22.97 % Typical Segment median 22.40%
Vmpp · Impp 37.30 V · 17.43 A Operating point at max power
Voc · Isc 44.28 V · 18.48 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2172×1303×30 mm · 2.83 m² of roof
Weight 34.2 kg Typical Typical · median 34.6 kg
Cells 120 · TOPCon Monocrystalline
Coefficient Pmax -0.300 %/°C Typical median -0.290 of its segment
Coefficient Voc · Isc -0.250 · 0.045 %/°C
NOCT 45 °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 87.4 % Equals 568 W guaranteed
Degradation 1.00 → 0.40 % 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
-

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

Heat losses
-0.300 %/°C against a segment median of -0.290
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Solitek Forza 650 650 W 22.97% -0.300 34.2 kg You are here
AIKO-A650-MAE72Mw 650 W 25.20% -0.260 27.0 kg Cooler, lighter, +2.2 pp
AIKO-A680-MDE72Mw 680 W 25.20% -0.260 29.0 kg Cooler, lighter, +2.2 pp
AIKO-A675-MDE72Mw 675 W 25.00% -0.260 29.0 kg Cooler, lighter, +2.0 pp
AIKO-A645-MAE72Mw 645 W 25.00% -0.260 27.0 kg Cooler, lighter, +2.0 pp
AIKO-A700-MAE78Dw 700 W 25.00% -0.260 34.5 kg +50 W, cooler, +2.0 pp
AIKO-A695-MAE78Dw 695 W 24.90% -0.260 34.5 kg +45 W, cooler, +1.9 pp
AIKO-G670-MCH72Mw 670 W 24.80% -0.260 28.2 kg Cooler, lighter, +1.8 pp
GKA210N120 680 W 24.03% -0.340 28.0 kg Hotter, lighter, +1.1 pp
GKA210N120-675 675 W 23.85% -0.340 28.0 kg Hotter, lighter, +0.9 pp
QN-670HJT-01 670 W 23.70% -0.240 35.5 kg +20 W, cooler, +0.7 pp
GKA210N120-670 670 W 23.67% -0.340 28.0 kg Hotter, lighter, +0.7 pp
QN-665HJT-01 665 W 23.50% -0.240 35.5 kg +15 W, cooler, +0.5 pp
GKA210N120-665 665 W 23.50% -0.340 28.0 kg Hotter, lighter, +0.5 pp
SPDG660-N120M12 660 W 23.32% -0.300 34.2 kg +10 W, +0.4 pp
NS-660MH-120 660 W 23.32% -0.290 31.0 kg Lighter, +0.4 pp, -5 yr warranty
GKA210N120-660 660 W 23.32% -0.340 28.0 kg Hotter, lighter, +0.4 pp

Found 497 panels of the same or similar size to this one, within ±10 mm. See them here Found 502 panels of the same or similar size to this one, within ±25 mm. See them here Found 502 panels of the same or similar size to this one, within ±50 mm. See them here Found 506 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
What warranty does the SoliTek Forza series come with?
The Forza series includes a 25-year product warranty covering material and workmanship defects, plus a 30-year linear power warranty with an exceptionally low annual degradation rate inherent to N-type TOPCon cells. This means the manufacturer guarantees a specified minimum power output for three decades of operation — a key factor when calculating the LCOE of a commercial PV or utility-scale project.
Is the SoliTek Forza suitable for a solar farm or large ground-mount installation?
Yes. The Forza series is specifically engineered for large-scale and commercial installations. The bifacial N-type TOPCon cell layout harvests energy from both the front and rear surfaces, delivering measurably higher yields on ground-mount systems with reflective ground cover (albedo). At up to 720 Wp per module in the B132 format, Forza reduces total panel count and lowers BoS costs per installed megawatt.
What is TOPCon technology in the SoliTek Forza, and is it worth the premium over older PERC modules?
TOPCon (Tunnel Oxide Passivated Contact) is a next-generation N-type cell technology achieving efficiencies above 23%. Unlike PERC cells, N-type silicon is not susceptible to light-induced degradation (LID), which translates into higher real-world energy output over the module's entire lifetime. Combining TOPCon with a bifacial design in the Forza series maximizes energy harvest per square meter and improves the overall return on investment.
Can SoliTek Forza panels handle heavy snow loads typical of Central European winters?
Yes. The dual-glass 2+2 mm tempered construction with anti-reflective coating provides exceptional mechanical strength against extreme snow and wind loads common in the Polish climate. The glass-glass design also eliminates the risk of PID (Potential Induced Degradation), which shortens the service life of conventional backsheet modules — making Forza a reliable choice for year-round outdoor operation.
Can SoliTek Forza panels be safely deployed near the coast or on agricultural sites?
Yes. The Forza series carries salt mist and ammonia resistance certifications, making it safe for coastal zones and agricultural environments where ammonia emissions from fertilizers and livestock operations can degrade standard modules over time. This makes the series an excellent fit for agrivoltaic projects and ground-mount farms in coastal or intensive-farming regions.
Is the SoliTek Forza series eligible for European renewable energy incentive programs such as FER X?
Yes. Forza panels are approved for the FER X program, simplifying qualification for European renewable energy support mechanisms. Manufacturing in Europe (Lithuania) also aligns with the EU's NZIA requirements that favor modules produced to European industrial standards — an important advantage for public tenders and projects seeking EU co-funding.
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