Skip to main content
Ulica Solar Brand review

UL-590M-144ADGN

590 Wp TOPCon Bifacial 80%
ComparePV verdict

Efficiency leader, no clear weak spot

Rank 3,086 of 14,005
Compare panels Datasheet PDF
Power (Wp)
590
Strong · top 18%
Efficiency (%)
22.84
Strong · top 15%
Density (Wp/m²)
228.4
Strong · top 17%
Temp (%/°C)
-0.290
Typical · median -0.290
Weight (kg)
30.6
Typical · median 31.2 kg
Warranty (yrs)
30
Typical · median 30 yrs

Ulica Solar TOPCon (N-TYPE) panels with a power output of 580-595W are the answer to growing efficiency requirements, utilizing advanced N-type cell technology that effectively eliminates light-induced degradation. Thanks to the use of TOPCon architecture, these modules offer significantly higher energy conversion efficiency than traditional older generation solutions, allowing for the maximization of yields from every square meter of the roof. This series stands out with an excellent temperature coefficient, which guarantees stable energy production and lower power losses even during extreme summer heat. For system owners, increased performance under low light conditions is also key, ensuring real yields early in the morning, at dusk, and on heavily cloudy days. The high unit power of up to 595W makes this solution primarily dedicated to large commercial projects and solar farms, where the priority is the optimization of BOS system costs and cabling. They are distinguished from the competition by their exceptional resistance to degradation over time, which translates into the longevity of the entire investment and the lowest levelized cost of energy. This is a proposal for investors who focus on innovations that realistically increase the profitability of a photovoltaic system in Polish climatic conditions.

Ranking

1,018 panels in the segment TOPCon 550-600 W
Metric This panel Median Position in segment Overall rank
Module efficiency 22.84% 22.44% Strong · top 15% 2,617
Power density 228.4 224.4 Strong · top 17% 2,598
Temperature coefficient -0.290 -0.290 Typical 2,165
Weight per kWp 51.9 53.8 Typical 5,287
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

2 positive · 0 caution
Best for

Commercial, utility-scale and hot-climate.

Strengths
22.84% module efficiency

Top 15% of the TOPCon 550-600 W segment, against a median of 22.44%.

228.4 watts per square metre

Top 17% of the TOPCon 550-600 W segment, against a median of 224.4.

Notes from the database
  • At 22.8% efficiency, this panel is on par with typical TOPCon 550-600W modules
  • 228.4 W/m² power density - 4.0 W/m² more than TOPCon 550-600W median (224.4 W/m²), more power per roof area
  • Temperature coefficient of -0.29%/°C matches the TOPCon 550-600W median
  • Bifacial design (80% factor) captures reflected light - adds 4-12% yield on ground-mount or white roof
  • In the top 19% for efficiency among all TOPCon panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 590 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 22.84 % Strong Segment median 22.44%
Vmpp · Impp 44.35 V · 13.30 A Operating point at max power
Voc · Isc 52.82 V · 14.02 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2278×1134×30 mm · 2.58 m² of roof
Weight 30.6 kg Typical Typical · median 31.2 kg
Cells 144 · TOPCon Monocrystalline
Bifaciality 80 % Rear output as a share of front
Coefficient Pmax -0.290 %/°C Typical median -0.290 of its segment
Coefficient Voc · Isc -0.250 · 0.046 %/°C
NOCT 43 °C At 800 W/m², 20 °C ambient
Product warranty 15 years Hardware defects only
Performance warranty 30 years Typical median 30 yrs · median 30 yrs
End-of-warranty output 87.4 % Equals 516 W guaranteed
Degradation 1.00 → 0.40 % First year, then annual

Datasheet charts

Open datasheet PDF

Measured curves published by Ulica Solar in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 590 Wp appear here. The rest cover the whole series.

PERC vs TOPCon bifacial module linear power output degradation warranty (30 years) PERC vs TOPCon bifacial module linear power output degradation warranty (30 years) Whole series I-V characteristics at different irradiations I-V characteristics at different irradiations Whole series I-V characteristics at different temperature I-V characteristics at different temperature Whole series

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
-0.290 %/°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
Ulica Solar UL-590M-144ADGN 590 W 22.84% -0.290 30.6 kg You are here
LR7-60HVH-560M 560 W 24.80% -0.260 25.0 kg -30 W, lighter, +2.0 pp
AIKO-A640-MAE72Mw 640 W 24.80% -0.260 27.0 kg +50 W, lighter, +2.0 pp
LR7-60HVH-555M 555 W 24.60% -0.260 25.0 kg -35 W, lighter, +1.8 pp
AIKO-A635-MAE72Mw 635 W 24.60% -0.260 27.0 kg +45 W, lighter, +1.8 pp
AIKO-A630-MAH72Dw 630 W 24.40% -0.260 32.5 kg +40 W, cooler, +1.6 pp
LR7-60HVHL-550M 550 W 24.40% -0.260 16.3 kg -40 W, lighter, +1.6 pp
UL-540M-144HV 540 W 20.84% -0.360 28.3 kg -50 W, hotter, -2.0 pp
UL-545M-144HV 545 W 21.09% -0.360 28.3 kg Hotter, -1.8 pp, -5 yr warranty
UL-550M-144HV 550 W 21.28% -0.360 28.3 kg Hotter, -1.6 pp, -5 yr warranty
UL-555M-144HV 555 W 21.48% -0.340 27.5 kg Hotter, -1.4 pp, -5 yr warranty
TSM144-9-570-595BNDG (570W) 570 W 22.10% -0.290 31.0 kg -20 W, -0.7 pp
TSM144-9-570-595BNDG (575W) 575 W 22.30% -0.290 31.0 kg -15 W, -0.5 pp
UL-580M-144ADGN 580 W 22.45% -0.290 30.6 kg -10 W, -0.4 pp
UL-585M-144ADGN 585 W 22.65% -0.290 30.6 kg Very close match
AIKO-A650-MAE72Mw 650 W 25.20% -0.260 27.0 kg +60 W, lighter, +2.4 pp
AIKO-A645-MAE72Mw 645 W 25.00% -0.260 27.0 kg +55 W, lighter, +2.2 pp

Found 2326 panels of the same or similar size to this one, within ±10 mm. See them here Found 2368 panels of the same or similar size to this one, within ±25 mm. See them here Found 2382 panels of the same or similar size to this one, within ±50 mm. See them here Found 2547 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
How much extra energy can you actually gain from the bifacial design of Ulica Solar TOPCon 580-595W panels?
Thanks to the dual-glass construction and N-type cells, these panels capture light reflected off the ground from both the front and rear side of the module. Depending on the albedo of the surface beneath the array (light gravel, white roofing, snow), the extra rear-side yield can range from 5% up to 25-30%. The biggest gains come from ground-mounted racking or flat roofs with reflective coating, where the panel's underside has unobstructed access to reflected light.
Do Ulica Solar TOPCon 595W panels perform well in high summer temperatures?
Yes. TOPCon N-type technology has a lower power temperature coefficient (around -0.29%/°C) compared to conventional PERC P-type panels (around -0.35% to -0.40%/°C). This means that as cell temperature rises above 25°C, the module loses less power, resulting in higher energy yield during hot, sunny days typical of Polish summers.
What warranty exactly comes with the Ulica Solar TOPCon 580-595W series?
The manufacturer provides a 15-year product warranty covering material and workmanship defects, plus a 30-year linear power warranty guaranteeing a minimum retained output over the years of operation. This exceeds the market standard for older-generation panels (typically 12/25 years), lowering the levelized cost of energy (LCOE) and improving the long-term security of the investment.
Is Ulica Solar a Tier 1 manufacturer, and will banks finance an installation using these panels?
Ulica Solar is not currently listed as a Tier 1 manufacturer under the BloombergNEF classification, despite operating its own production lines and having years of experience (the company was founded in 2006 and is headquartered in China). In practice, this may prompt additional questions from some banks or leasing companies when financing large commercial projects — it's worth confirming directly with the financing institution before signing a contract.
What kind of installations are the 595W TOPCon Ulica Solar panels best suited for?
Given the high unit power and larger dimensions typical of 144-cell modules, this series is designed mainly for large industrial roofs, commercial buildings, and solar farms, where fewer, higher-power panels reduce wiring, mounting structure, and labor (BoS) costs. For typical single-family homes with smaller sloped roof areas, more compact, lower-power modules are usually a better fit.
How do TOPCon N-type panels differ from older PERC P-type panels in terms of degradation?
The N-type cells used in this series are far less prone to light-induced degradation (LID) and light- and elevated-temperature-induced degradation (LeTID), which in older PERC P-type panels can reduce power by as much as 2-3% in the first year of operation. As a result, Ulica Solar TOPCon panels retain higher efficiency throughout their service life, delivering genuinely higher energy yields over a 25-30 year horizon.
Add to compare