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Ulica Solar Brand review

UL-665M-132HV

665 Wp TOPCon
ComparePV verdict

Middle of its segment, short guarantee

Rank 3,744 of 14,005
Compare panels Datasheet PDF
Power (Wp)
665
Typical for its class
Efficiency (%)
21.41
Weak · bottom 10%
Density (Wp/m²)
214.1
Weak · bottom 9%
Temp (%/°C)
-0.340
Weak · bottom 6%
Weight (kg)
33.3
Typical · median 34.6 kg
Warranty (yrs)
25
Weak · bottom 2%

The Ulica Solar UL-655, 660, 665 and 670M-132HV module series is a powerful solution designed to maximize yields from limited mounting space. The use of half-cut cell technology drastically reduces internal losses and minimizes the risk of hot spots, which directly translates into a longer panel lifespan. Thanks to the multi-busbar MBB system, these modules offer better current flow and higher resistance to micro-cracks, which is crucial in the variable weather conditions typical of the Polish climate. This series solves the problem of high installation costs by offering a very low LCOE, making it an ideal choice for large commercial projects and photovoltaic farms. High unit power allows for a reduction in the number of mounting structures and cabling, optimizing total investment costs. The implementation of innovative production processes ensures that the modules maintain high efficiency even after many years of intensive operation. A robust frame and reinforced tempered glass guarantee mechanical reliability under heavy snow or wind loads. These panels stand out from the competition with excellent resistance to PID degradation and stable operation in low-light conditions. This is a sound choice for investors focusing on reliability and a fast return on capital in the industrial sector.

Ranking

249 panels in the segment TOPCon 650-700 W
Metric This panel Median Position in segment Overall rank
Module efficiency 21.41% 22.40% Weak · bottom 10% 8,280
Power density 214.1 223.7 Weak · bottom 9% 8,250
Temperature coefficient -0.340 -0.290 Weak · bottom 6% 8,778
Weight per kWp 50.1 53.2 Typical 3,587
Performance warranty 25 yrs 30 yrs Weak · bottom 2% 9,798
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

0 positive · 3 caution
Best for

Utility-scale, commercial and shaded-installations.

Not ideal for

Owners who want a long output guarantee, hot climates and roofs where every square metre has to count.

Watch-outs
25 year performance warranty

Bottom 2% of the TOPCon 650-700 W segment, against a median of 30 yrs. Ranked 9,798th in the whole database.

-0.340 %/°C temperature coefficient

Bottom 6% of the TOPCon 650-700 W segment, against a median of -0.290. Ranked 8,778th in the whole database.

214.1 watts per square metre

Bottom 9% of the TOPCon 650-700 W segment, against a median of 223.7. Ranked 8,250th in the whole database.

Notes from the database
  • At 21.4% efficiency, this panel is 1.0pp below the TOPCon 650-700W median of 22.4%
  • 214.1 W/m² power density is 9.6 W/m² below TOPCon 650-700W median (223.7 W/m²) - requires larger installation area
  • At -0.34%/°C, loses 0.05pp more power per degree than TOPCon 650-700W median (-0.29%/°C)
  • Weight of 33.3 kg (1.3 kg below TOPCon 650-700W median of 34.6 kg) allows easier transport and roof mounting
  • In the top 59% for efficiency among all TOPCon panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 665 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 21.41 % Weak Segment median 22.40%
Vmpp · Impp 38.30 V · 17.36 A Operating point at max power
Voc · Isc 45.80 V · 18.53 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 33.3 kg Typical Typical · median 34.6 kg
Cells 132 · TOPCon Monocrystalline
Coefficient Pmax -0.340 %/°C Weak bottom 6% of its segment
Coefficient Voc · Isc -0.265 · 0.049 %/°C
NOCT 43 °C At 800 W/m², 20 °C ambient
Product warranty 12 years Hardware defects only
Performance warranty 25 years Weak bottom 2% · median 30 yrs
End-of-warranty output 84.8 % Equals 546 W guaranteed
Degradation 2.00 → 0.55 % 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
-0.340 %/°C against a segment median of -0.290
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Ulica Solar UL-665M-132HV 665 W 21.41% -0.340 33.3 kg You are here
AIKO-A650-MAE72Mw 650 W 25.20% -0.260 27.0 kg Cooler, lighter, +3.8 pp
AIKO-A680-MDE72Mw 680 W 25.20% -0.260 29.0 kg Cooler, +3.8 pp, +5 yr warranty
AIKO-A675-MDE72Mw 675 W 25.00% -0.260 29.0 kg Cooler, +3.6 pp, +5 yr warranty
AIKO-A645-MAE72Mw 645 W 25.00% -0.260 27.0 kg Cooler, lighter, +3.6 pp
AIKO-A700-MAE78Dw 700 W 25.00% -0.260 34.5 kg Cooler, +3.6 pp, +5 yr warranty
AIKO-A695-MAE78Dw 695 W 24.90% -0.260 34.5 kg Cooler, +3.5 pp, +5 yr warranty
AIKO-G670-MCH72Mw 670 W 24.80% -0.260 28.2 kg Cooler, lighter, +3.4 pp
UL-655M-132DG 655 W 21.09% -0.340 37.3 kg Heavier, -0.3 pp, +5 yr warranty
UL-660M-132DG 660 W 21.25% -0.340 37.3 kg Heavier, +5 yr warranty
UL-670M-132DG 670 W 21.57% -0.340 37.3 kg Heavier, +5 yr warranty
UL-700M-132DGN 700 W 22.53% -0.290 37.4 kg Cooler, +1.1 pp, +5 yr warranty
UL-705M-132DGN 705 W 22.70% -0.290 37.4 kg Cooler, +1.3 pp, +5 yr warranty
AIKO-A805-GRH78Dw 805 W 25.10% -0.260 39.8 kg +140 W, cooler, +3.7 pp
AIKO-A800-GRH78Dw 800 W 24.90% -0.260 39.8 kg +135 W, cooler, +3.5 pp
AIKO-A795-GRH78Dw 795 W 24.80% -0.260 39.8 kg +130 W, cooler, +3.4 pp
AIKO-A790-GRH78Dw 790 W 24.60% -0.260 39.8 kg +125 W, cooler, +3.2 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
What is TOPCon technology used in Ulica Solar UL-655-670M-132HV panels and is it worth choosing?
TOPCon (Tunnel Oxide Passivated Contact) is an N-type cell technology that reduces electron recombination on the silicon surface, enabling higher efficiency (up to 670 Wp) and slower power degradation over time compared to older PERC cells. In practice, this means better energy yield throughout the module's lifetime, which is especially valuable for large commercial installations where every percentage point of efficiency matters.
What warranty applies to the UL-655-660-665-670M-132HV series modules?
Ulica Solar provides a 12-year product warranty covering material and workmanship defects, plus a 25-year power performance warranty. This means the manufacturer guarantees a defined level of energy output for a quarter century, which is a market standard for modern half-cut cell panels.
Are UL-670M-132HV panels suitable for large solar farms and industrial installations?
Yes, this is one of the series' main design goals. High unit power up to 670 Wp reduces the number of modules, mounting structures, and cabling needed for a given target system size, lowering the LCOE (levelized cost of energy). This makes the series particularly cost-effective for commercial projects and utility-scale PV farms, where optimizing cost per megawatt is critical.
What are the dimensions and weight of the UL-655-670M-132HV panel, and will it fit a typical roof?
The module measures approximately 2384 x 1303 x 35 mm and weighs about 33.6 kg, a result of using 132 half-cut cells in a multi-busbar layout. Due to its large size and weight, the panel is best suited to high-load-capacity roofs or ground-mounted PV farm structures; for pitched-roof installations, structural load should be confirmed with a designer beforehand.
Are Ulica Solar UL-655-670M-132HV modules bifacial?
No, the UL-655-670M-132HV series consists of monofacial panels, not designed to capture reflected light on the rear side. If an investor is planning a ground-mounted system over a light-colored surface and wants to boost yield through albedo, they should consider Ulica Solar's bifacial TOPCon series, which is specifically built for that purpose.
Is Ulica Solar a tier 1 manufacturer, and is investing in these panels safe?
Ulica Solar is a Chinese manufacturer that is not currently on the Bloomberg NEF tier 1 list, meaning it has a shorter track record of bank project financing compared to the largest market players. This does not directly translate to lower product quality — the series offers solid technical specifications (TOPCon technology, multi-busbar, reinforced tempered glass) and standard 12/25-year warranties, though it's worth checking your financing or insurance provider's requirements before a large project.
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