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Solitek SOLID 435 Bifacial Transparent
Solitek Brand review

SOLID 435 Bifacial Transparent

435 Wp TOPCon Bifacial
ComparePV verdict

Space saver, heavy for its output

Rank 6,329 of 14,129
Compare panels Datasheet PDF
Power (Wp)
435
Typical for its class
Efficiency (%)
22.27
Typical · median 22.00%
Density (Wp/m²)
222.8
Strong · top 17%
Temp (%/°C)
-0.300
Typical · median -0.290
Weight (kg)
33.0
Weak · 11.0 kg above median
Warranty (yrs)
30
Typical · median 30 yrs

The SOLID series from SoliTek is primarily distinguished by its glass-to-glass construction, which provides exceptional durability and resistance to harsh weather conditions - including moisture, extreme temperatures, ammonia, and salt spray. Unlike conventional glass and film modules, SOLID panels are virtually free of micro-cracks in the cells, which directly translates into long-term energy stability. The use of n-type TOPCon bifacial technology means that the modules produce energy from both sides - which, under optimal conditions, significantly increases annual energy yield compared to monofacial film modules. The series is available in both frameless and aluminum-framed versions, and the semi-transparent variant is ideal for agrowoltaic installations and building facades. The Cradle to Cradle Gold certification confirms that production adheres to circular economy principles - a key advantage for investors concerned about the carbon footprint of their investment. SOLID panels are targeted at both individual customers and large commercial projects that require 30-year product and performance warranty. The European origin of the modules guarantees independence from non-European supply chains and high quality control standards.

Ranking

1,220 panels in the segment TOPCon 400-450 W
Metric This panel Median Position in segment Overall rank
Module efficiency 22.27% 22.00% Typical 5,544
Power density 222.8 220.2 Strong · top 17% 5,212
Temperature coefficient -0.300 -0.290 Typical 6,152
Weight per kWp 75.9 51.5 Weak · bottom 2% 13,755
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

Residential, commercial, agrivoltaic and BIPV.

Not ideal for

Weight-limited structures.

Strengths
222.8 watts per square metre

Top 17% of the TOPCon 400-450 W segment, against a median of 220.2.

Watch-outs
75.9 kg per kWp

Bottom 2% of the TOPCon 400-450 W segment, against a median of 51.5. Ranked 13,755th in the whole database.

Notes from the database
  • At 22.3% efficiency, this panel is on par with typical TOPCon 400-450W modules
  • At 222.8 W/m² power density, roof space requirements are typical for TOPCon 400-450W panels
  • At -0.30%/°C, hot weather performance is typical for TOPCon 400-450W panels
  • Weight of 33.0 kg is 11.0 kg above TOPCon 400-450W median (22.0 kg) - verify structural support
  • In the top 39% for efficiency among all TOPCon panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 435 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 22.27 % Typical Segment median 22.00%
Vmpp · Impp 32.96 V · 13.20 A Operating point at max power
Voc · Isc 38.92 V · 13.80 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1722×1134×40 mm · 1.95 m² of roof
Weight 33.0 kg Weak Weak · 11.0 kg above median
Cells 108 · TOPCon Monocrystalline
Coefficient Pmax -0.300 %/°C Typical median -0.290 of its segment
Coefficient Voc · Isc -0.250 · 0.045 %/°C
NOCT 46 °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
End-of-warranty output 90.0 % Equals 392 W guaranteed
Degradation 1.00 → 0.31 % 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 SOLID 435 Bifacial Transparent 435 W 22.27% -0.300 33.0 kg You are here
JAT54S40-485/LR 485 W 24.30% -0.260 19.3 kg +50 W, lighter, +2.0 pp
AIKO-A485-MCE54Mw 485 W 24.30% -0.260 21.0 kg +50 W, lighter, +2.0 pp
AIKO-A485-MAH54Mw 485 W 24.30% -0.260 21.5 kg +50 W, lighter, +2.0 pp
GK-5-54HG-485M 485 W 24.30% -0.260 21.0 kg +50 W, lighter, +2.0 pp
ZEUS 3.0+ 108 485WP 485 W 24.30% -0.260 24.2 kg +50 W, lighter, +2.0 pp
SOLID Agro 290 290 W 14.71% -0.300 32.0 kg -145 W, lighter, -7.6 pp
SOLID Bifacial Anti-Glare 425 425 W 21.76% -0.300 33.0 kg -10 W, -0.5 pp
SOLID Bifacial 425 425 W 21.76% -0.300 33.0 kg -10 W, -0.5 pp
SOLID Bifacial Full black 435 435 W 22.07% -0.300 32.0 kg Lighter
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +75 W, lighter, +2.7 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +60 W, lighter, +2.5 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +70 W, lighter, +2.4 pp
WST-505BKX54-A2 505 W 24.70% -0.260 25.0 kg +70 W, lighter, +2.4 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg +55 W, lighter, +2.2 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg +65 W, lighter, +2.2 pp
CIPRO-TN9C54M-500W 500 W 24.50% -0.260 21.4 kg +65 W, lighter, +2.2 pp

Found 1797 panels of the same or similar size to this one, within ±10 mm. See them here Found 1928 panels of the same or similar size to this one, within ±25 mm. See them here Found 3413 panels of the same or similar size to this one, within ±50 mm. See them here Found 4007 panels of the same or similar size to this one, within ±100 mm. See them here

About the SOLID series series

6 answered

These answers cover the whole series. Where a figure differs, the specification above is this module's own.

What does the SoliTek SOLID series warranty cover and how long does it last?
SoliTek SOLID panels come with a 30-year product warranty and a 30-year power output warranty guaranteeing at least 90% of rated power after the full warranty period. This is among the longest warranties available in the PV market. The warranty covers both material defects and excessive power degradation - and because SoliTek is a European manufacturer, warranty claims are enforced under EU consumer law, reducing the risk of disputes common with overseas suppliers.
How does bifacial TOPCon technology in the SOLID panels actually increase energy yield?
SOLID panels use n-type TOPCon bifacial cells that generate electricity from both the front and rear surfaces. Reflected light (albedo) from the ground or rooftop surface reaches the rear side and can boost annual energy yield by 15-35%, depending on surface reflectivity and tilt angle. N-type TOPCon also has a lower temperature coefficient than standard PERC cells, meaning the panels lose less power on hot days - an important factor for LCOE calculations over a 30-year lifespan.
Can SoliTek SOLID frameless panels be used on building facades or in agrivoltaic installations?
Yes - the semi-transparent, frameless variant of the SOLID series is specifically designed for BIPV facades and agrivoltaic setups. In agrivoltaic use, it allows partial light transmission to crops growing below. On facades, it serves as an energy-generating architectural element. The dual 3.2 mm tempered glass construction meets building-integrated requirements and carries a Fire Class A rating, making it suitable for facade applications under standard building codes.
What is the practical difference between SOLID's glass-glass construction and a conventional glass-backsheet module?
Standard modules use a polymer backsheet that gradually allows moisture ingress, accelerating cell degradation and microcracks. SOLID panels replace the backsheet with a second 3.2 mm tempered glass layer, virtually eliminating moisture penetration and microcrack formation. The result is higher long-term durability, verified resistance to ammonia (relevant for agricultural installations) and salt mist (coastal sites), and more stable power output over decades compared to glass-backsheet alternatives.
Are SoliTek SOLID panels manufactured in Europe, and why does that matter for my project?
Yes, SoliTek is headquartered in Vilnius, Lithuania, and the SOLID modules are manufactured in Europe. This has several practical benefits: independence from Asian supply chains and potential tariff exposure, easier warranty enforcement under EU consumer law, and a Cradle to Cradle Gold certification confirming circular economy production standards. For investors pursuing grants or ESG reporting that favor low-carbon-footprint products, European origin is an increasingly significant selection criterion.
How much does a SoliTek SOLID 435W panel weigh, and will a standard roof structure support it?
The SOLID 435W glass-glass module weighs approximately 33 kg - significantly more than a typical glass-backsheet panel at 20-22 kg. A structural assessment of the roof is advisable before installation, especially on older buildings. The panel itself is engineered for extreme loads - up to 10,500 Pa snow load and 4,500 Pa wind load - so the limiting factor is typically the roof structure and racking system, not the module. Work with a certified installer to verify load capacity before specifying this series.
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