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Solitek Brand review

SOLID Solrif Terracotta Bronze 355

355 Wp TOPCon Bifacial
ComparePV verdict

Solid all-round for its segment

Rank 12,177 of 14,129
Compare panels Datasheet PDF
Power (Wp)
355
Weak · bottom 13%
Efficiency (%)
18.00
Typical · median 18.20%
Density (Wp/m²)
173.2
Typical · median 181.8
Temp (%/°C)
-0.300
Typical · median -0.290
Weight (kg)
27.0
Typical · median 26.0 kg
Warranty (yrs)
30
Typical · median 30 yrs

The Solitek SOLID Solrif Terracotta Bronze series is an advanced BIPV (Building Integrated Photovoltaics) solution that functions as both a roofing system and a solar power installation - replacing traditional ceramic tiles without the need for additional supporting structures. Its distinctive, matte bronze color perfectly complements historic urban landscapes, meeting stringent conservation requirements in historic city centers dominated by red-tiled roofs. Special glass coatings reduce reflections, making the panel appear like a standard ceramic tile from the street, rather than a typical solar panel. The construction, featuring double-tempered glass, guarantees exceptional mechanical strength, certified to a Class 5 hail resistance. A wide range of mounting angles and high resistance to snow and wind loads make it a versatile solution for year-round use. A 30-year product and performance warranty, along with Cradle to Cradle Gold certification, confirms the highest standard of sustainable production, carried out in Europe using renewable energy. The series is primarily intended for investors renovating historic buildings, villas, and protected structures, where the use of standard solar panels is impossible or undesirable.

Ranking

112 panels in the segment TOPCon 350-400 W
Metric This panel Median Position in segment Overall rank
Module efficiency 18.00% 18.20% Typical 13,330
Power density 173.2 181.8 Typical 13,482
Temperature coefficient -0.300 -0.290 Typical 6,152
Weight per kWp 76.1 68.9 Typical 13,760
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
Best for

BIPV, residential and commercial.

Notes from the database
  • At 18.0% efficiency, this panel is 2.0pp above typical TOPCon 0-400W modules (median: 16.0%)
  • Power density of 173.2 W/m² packs 13.4 W/m² more into the same footprint vs TOPCon 0-400W median (159.8 W/m²)
  • At -0.30%/°C, hot weather performance is typical for TOPCon 0-400W panels
  • At 27.0 kg, this panel is 3.5 kg heavier than the TOPCon 0-400W median (23.5 kg) - more demanding for installation crews
  • In the top 94% for efficiency among all TOPCon panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 355 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 18.00 % Typical Segment median 18.20%
Vmpp · Impp 32.96 V · 10.77 A Operating point at max power
Voc · Isc 38.92 V · 11.30 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1767×1160×17 mm · 2.05 m² of roof
Weight 27.0 kg Typical Typical · median 26.0 kg
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 320 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 Solrif Terracotta Bronze 355 355 W 18.00% -0.300 27.0 kg You are here
NS-330MH-80 330 W 23.15% -0.290 15.0 kg Lighter, +5.1 pp, -5 yr warranty
NS-330MH-80 330 W 23.15% -0.290 15.0 kg Lighter, +5.1 pp, -5 yr warranty
GKA210M320W 320 W 23.00% - 16.2 kg -35 W, lighter, +5.0 pp
GKA210M340W 340 W 23.00% - 16.2 kg -15 W, lighter, +5.0 pp
GKA210M360W 360 W 23.00% - 16.2 kg Lighter, +5.0 pp
GKA210M380W (1/4*4*38) 380 W 23.00% - 17.1 kg +25 W, lighter, +5.0 pp
GKA210M400W (1/2*4*20) 400 W 23.00% - 18.0 kg +45 W, lighter, +5.0 pp
GKA210M400W (1/4*4*40) 400 W 23.00% - 18.0 kg +45 W, lighter, +5.0 pp
GKA210M380W (1/2*4*19) 380 W 23.00% - 17.1 kg +25 W, lighter, +5.0 pp
SPR-MAX3-400-COM 400 W 22.60% -0.270 19.0 kg Lighter, +4.6 pp, +10 yr warranty
SOLID Solrif Terracotta Orange 285W 285 W 14.45% -0.300 33.5 kg -70 W, heavier, -3.6 pp
SOLID Solrif Transparent 290 290 W 14.69% -0.300 33.5 kg -65 W, heavier, -3.3 pp
SOLID Solrif 425 425 W 21.54% -0.300 33.5 kg +70 W, heavier, +3.5 pp
SOLID Solrif 435 435 W 22.04% -0.300 27.0 kg +80 W, +4.0 pp
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +155 W, cooler, +7.0 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +140 W, lighter, +6.8 pp

Found 9 panels of the same or similar size to this one, within ±10 mm. See them here Found 30 panels of the same or similar size to this one, within ±25 mm. See them here Found 3556 panels of the same or similar size to this one, within ±50 mm. See them here Found 3703 panels of the same or similar size to this one, within ±100 mm. See them here

About the SOLID Solrif Terracotta Bronze series

6 answered

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

Can Solitek SOLID Solrif Terracotta Bronze panels be installed on a historic tenement building subject to heritage conservation requirements?
Yes, the SOLID Solrif Terracotta Bronze series was designed specifically for buildings under heritage conservation oversight. The matte bronze color mimics traditional ceramic roof tiles, and special glass coatings reduce light reflections so the modules look like classic tiles from street level rather than conventional solar panels. The system is installed without additional support framing, preserving the original roof geometry, which significantly simplifies obtaining heritage authority approval in historic city centers dominated by red-tiled rooftops.
How does the Solitek SOLID Solrif Terracotta Bronze differ from standard solar panels - does it truly replace roof tiles?
The SOLID Solrif Terracotta Bronze is a BIPV system in which the modules simultaneously function as waterproof roof cladding and a photovoltaic generator. Unlike standard PV panels mounted on top of an existing roof, Solrif is the roof itself - installed directly on battens without a separate ceramic tile layer and without any additional steel racking. This eliminates the cost of traditional tile covering and shortens the overall project timeline.
What is TOPCon technology in the Solitek SOLID Solrif Terracotta Bronze series, and what does bifacial design offer in a rooftop BIPV application?
TOPCon (Tunnel Oxide Passivated Contact) is an N-type cell technology that delivers higher efficiency and a lower temperature coefficient than older PERC cells, meaning less power loss on hot days. The bifacial rear gain is smaller in a BIPV application than in ground-mount systems because the back pane is enclosed, but the glass-glass construction inherent to bifacial cell design translates directly into exceptional mechanical durability and an extended module service life.
How resistant are Solitek SOLID Solrif Terracotta Bronze modules to hail, snow, and wind loads?
The SOLID Solrif Terracotta Bronze modules use double-tempered glass (3.2 mm per pane) and carry a Class 5 hail resistance certificate, meaning they withstand impact from 50 mm diameter hailstones. The glass-glass construction handles mechanical loads up to 10,500 Pa, comfortably exceeding the structural requirements for typical European rooftops exposed to heavy snow accumulation or strong wind gusts.
What warranty does Solitek provide on the SOLID Solrif Terracotta Bronze series and what does it cover?
Solitek offers a 30-year product warranty and a 30-year power output warranty on the SOLID Solrif Terracotta Bronze series. The product warranty covers material and manufacturing defects, while the power warranty guarantees a minimum percentage of nominal output throughout the full 30-year operational period. The Cradle to Cradle Gold certification confirms that production takes place in Lithuania using 100% renewable energy and in accordance with circular economy principles.
What is the maximum power output of a single Solitek SOLID Solrif Terracotta Bronze module, and is it enough for a single-family home?
The maximum rated power of a single SOLID Solrif Terracotta Bronze module is 355 Wp. Because each module is sized to match a standard ceramic roof tile, total system output depends on available roof area. For a typical single-family home with a sufficiently large roof section, the installed capacity can cover a substantial share of annual electricity consumption. A precise system design should be prepared by an installation company experienced in BIPV solutions.
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