--- title: "Ulica Solar UL-505M-120BDGN 505W Solar Panel - Specs & Review | ComparePV" description: "Ulica Solar UL-505M-120BDGN 505W solar panel. Specs: 22.81% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/ulica-solar-ul-505m-120bdgn" updated: 2026-09-11 --- # Ulica Solar UL-505M-120BDGN Solid all-round for its segment 432 panels in the segment TOPCon 500-550 W ## Identity - **Manufacturer:** Ulica Solar - **Model:** UL-505M-120BDGN - **Series:** Black Jade-Flow (TOPCon N-type) 490–505W - **Rated power:** 505 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 500-550 W (432 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 505 W | 510 W | Typical | | | Module efficiency | 22.81% | 22.73% | Typical | 2,711 | | Power density | 228.1 | 227.4 | Typical | 2,755 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight (kg) | 26.5 kg | 27.0 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.81% | 22.73% | Typical | 2,711 | | Power density | 228.1 | 227.4 | Typical | 2,755 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight per kWp | 52.5 | 52.4 | Typical | 6,016 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | - **Best for:** Residential, commercial and hot-climate. ## Specification ### Electrical - **Rated power (Pmax):** 505 W - **Efficiency:** 22.81 % - **Voltage at Pmax (Vmp):** 37.18 V - **Current at Pmax (Imp):** 13.58 A - **Open-circuit voltage (Voc):** 43.94 V - **Short-circuit current (Isc):** 14.54 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.290 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.046 %/degC - **NOCT:** 43 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 120 - **Bifacial:** yes ### Physical - **Length:** 1952 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 26.5 kg - **Area:** 2.21 m2 - **Power density:** 228.1 Wp/m2 ### Warranty and degradation - **Product warranty:** 15 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 87.4 % - **First-year degradation:** 1.00 % - **Annual degradation:** 0.40 % - **Output after 30 years:** 441 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 2711 of 14005 | | Power density | 2755 of 14005 | | Temperature coefficient | 2165 of 14005 | | Weight | 6016 of 14005 | | Warranty | 21 of 14005 | ## About this series The Ulica Solar Black Jade-Flow (TOPCon N-type) 490-505W series is designed for investors who want to maximize energy production from a limited roof or ground-mounted surface, without compromising on durability. The use of **TOPCon N-type** cells helps maintain high efficiency over time and performs better in high-temperature conditions, which is particularly important in the summer on dark roof surfaces. A key feature of this series is **Cutting Free technology** - the non-cutting design reduces the risk of microcracks, ensuring long-term stability. Additionally, the modules have **Anti-PID resistance**, making them less susceptible to performance degradation in demanding installations and during long-term operation. The entire series is completed by **sleek, aesthetic finish**, which looks great on modern homes and premium buildings. This is a sensible choice for residential installations, small businesses, and projects where reliability, appearance, and predictable output are important. ## Notable figures - Efficiency of 22.8% matches the \*\*TOPCon 500-550W\*\* median - At 228.1 W/m² power density, roof space requirements are typical for \*\*TOPCon 500-550W\*\* panels - Temperature coefficient of -0.29%/°C matches the \*\*TOPCon 500-550W\*\* median - #2711 for efficiency, #2165 for temperature performance out of 14005 panels ## Questions ### Are Ulica Solar Black Jade-Flow panels bifacial, and is that worth paying for? Yes, Black Jade-Flow modules use a double-glass bifacial construction - the rear side of the cells also captures light reflected off the roof, ground, or a bright surface. This delivers extra energy yield, especially on light-colored surfaces, ground-mount racking, or flat roofs with gravel or white PVC membranes. On a typical pitched roof with dark tiles the bifacial gain is smaller, but the dual-glass design still improves mechanical durability and long-term reliability. ### What is Cutting Free technology in Ulica Solar panels, and is it worth choosing? Cutting Free means the silicon cells are not laser-cut in half, unlike standard half-cut modules. This removes the risk of microcracks that form during the cutting process and can later develop into hot spots and power loss. As a result, the panel maintains a more stable energy yield throughout its lifetime, which matters especially given the 30-year linear power warranty offered on this series. ### What warranty applies to Ulica Solar Black Jade-Flow panels? The Black Jade-Flow series comes with a 15-year product warranty covering material and workmanship defects, plus a 30-year linear power output warranty. That means the manufacturer guarantees a defined minimum power level even three decades into operation, which is standard for modern TOPCon N-type panels and helps you calculate long-term ROI more accurately. ### Are the 505W Black Jade-Flow panels suitable for a small pitched roof? Yes, the high per-module power (up to 505 Wp) makes this series well suited to limited roof space, since you can reach a higher system power with fewer panels. TOPCon N-type cell technology also handles high temperatures better on hot, sun-exposed, dark roof surfaces in summer, and the black finish blends well with the look of a typical pitched roof. ### How do the TOPCon N-type cells in Black Jade-Flow differ from standard PERC cells? TOPCon N-type cells have a lower temperature- and light-induced degradation rate than older P-type PERC cells, so they hold higher efficiency for longer, particularly in summer on a heated roof. These modules also feature Anti-PID resistance, meaning they're less prone to potential-induced degradation, which can be an issue in systems with higher system voltage or in humid climates. ### Is Ulica Solar a Tier 1 manufacturer, and is it a trustworthy brand? Ulica Solar is a Chinese manufacturer that is not currently on the BloombergNEF Tier 1 list, but it has been operating in the market for years and backs its modules with industry-standard warranties - 15 years on the product and 30 years on power output. Tier 1 status mainly reflects access to bank financing for utility-scale projects rather than module quality directly, so it shouldn't be the sole selection criterion for residential or small commercial installations. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/ul-1952-120bdgnthc-30-en-v1-0-3d1aa411d2fb.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, lighter, +2.2 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | Cooler, lighter, +2.0 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, lighter, +1.9 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | +50 W, cooler, +1.8 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | Cooler, lighter, +1.7 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | Cooler, lighter, +1.7 pp | | [Ulica Solar UL-490M-120BDGN](https://comparepv.com/panel/ulica-solar-ul-490m-120bdgn) | 490 W | -15 W, -0.7 pp | | [Ulica Solar UL-495M-120BDGN](https://comparepv.com/panel/ulica-solar-ul-495m-120bdgn) | 495 W | -10 W, -0.4 pp | | [Ulica Solar UL-500M-120BDGN](https://comparepv.com/panel/ulica-solar-ul-500m-120bdgn) | 500 W | -0.2 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | +55 W, cooler, +2.0 pp | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | +45 W, lighter, +1.6 pp | | [JA Solar JAT60S40-540/LR](https://comparepv.com/panel/ja-solar-jat60s40-540-lr) | 540 W | +35 W, lighter, +1.6 pp | | [Gokin GK-5-60HG-540M](https://comparepv.com/panel/gokin-gk-5-60hg-540m) | 540 W | +35 W, lighter, +1.6 pp | | [Jinko Solar JKM545-54QL6-DV-F1-EU](https://comparepv.com/panel/jinko-solar-jkm545-54ql6-dv-f1-eu) | 545 W | +40 W, cooler, +1.5 pp | | [Longi Solar LR7-60HVH-545M](https://comparepv.com/panel/longi-lr7-60hvh-545m) | 545 W | +40 W, cooler, +1.4 pp | --- Source: https://comparepv.com/panel/ulica-solar-ul-505m-120bdgn Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.