--- title: "Ulica Solar UL-660M-132HV 660W Solar Panel - Specs & Review | ComparePV" description: "Ulica Solar UL-660M-132HV 660W solar panel. Specs: 21.25% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/ulica-solar-ul-660m-132hv" updated: 2026-09-11 --- # Ulica Solar UL-660M-132HV Middle of its segment, short guarantee 249 panels in the segment TOPCon 650-700 W ## Identity - **Manufacturer:** Ulica Solar - **Model:** UL-660M-132HV - **Series:** UL-655 \| 660 \| 665 \| 670M-132HV - **Rated power:** 660 W - **Cell technology:** TOPCon ## How it compares Compared against segment TOPCon 650-700 W (249 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 660 W | 665 W | Typical | | | Module efficiency | 21.25% | 22.40% | Weak - bottom 6% | 8,904 | | Power density | 212.5 | 223.7 | Weak - bottom 5% | 8,959 | | Temperature coefficient | -0.340 | -0.290 | Weak - bottom 6% | 8,778 | | Weight (kg) | 33.3 kg | 34.6 kg | Typical | | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 2% | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.25% | 22.40% | Weak - bottom 6% | 8,904 | | Power density | 212.5 | 223.7 | Weak - bottom 5% | 8,959 | | Temperature coefficient | -0.340 | -0.290 | Weak - bottom 6% | 8,778 | | Weight per kWp | 50.5 | 53.2 | Typical | 3,831 | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 2% | 9,798 | ### Watch out for - **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. - **212.5 watts per square metre** - Bottom 5% of the TOPCon 650-700 W segment, against a median of 223.7. Ranked 8,959th 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. - **Best for:** Utility-scale, commercial and shaded-installations. - **Not ideal for:** Owners who want a long output guarantee, roofs where every square metre has to count and hot climates. ## Specification ### Electrical - **Rated power (Pmax):** 660 W - **Efficiency:** 21.25 % - **Voltage at Pmax (Vmp):** 38.20 V - **Current at Pmax (Imp):** 17.28 A - **Open-circuit voltage (Voc):** 45.70 V - **Short-circuit current (Isc):** 18.44 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.340 %/degC - **Temperature coefficient of Voc:** -0.265 %/degC - **Temperature coefficient of Isc:** 0.049 %/degC - **NOCT:** 43 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 132 ### Physical - **Length:** 2384 mm - **Width:** 1303 mm - **Thickness:** 35 mm - **Weight:** 33.3 kg - **Area:** 3.11 m2 - **Power density:** 212.5 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 25 years - **Output guaranteed at end of warranty:** 84.8 % - **First-year degradation:** 2.00 % - **Annual degradation:** 0.55 % - **Output after 30 years:** 542 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 8904 of 14005 | | Power density | 8959 of 14005 | | Temperature coefficient | 8778 of 14005 | | Weight | 3831 of 14005 | | Warranty | 9798 of 14005 | ## About this series 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. ## Notable figures - Efficiency of 21.2% is 1.1pp below the \*\*TOPCon 650-700W\*\* median (22.4%) - Power density of 212.5 W/m² is 11.2 W/m² below \*\*TOPCon 650-700W\*\* median (223.7 W/m²) - needs more roof space - 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 - Ranked #8904 out of 14005 panels for efficiency in the database ## Questions ### 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. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/ulica-mono-perc-2384mm-665w-silver-frame35mm-240726-5c491e144555.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | Cooler, lighter, +3.9 pp | | [AIKO AIKO-A680-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a680-mde72mw) | 680 W | Cooler, +3.9 pp, +5 yr warranty | | [AIKO AIKO-A675-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a675-mde72mw) | 675 W | Cooler, +3.8 pp, +5 yr warranty | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | Cooler, lighter, +3.8 pp | | [AIKO AIKO-A700-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a700-mae78dw) | 700 W | Cooler, +3.8 pp, +5 yr warranty | | [AIKO AIKO-A695-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a695-mae78dw) | 695 W | Cooler, +3.6 pp, +5 yr warranty | | [AIKO AIKO-G670-MCH72Mw](https://comparepv.com/panel/aiko-aiko-g670-mch72mw) | 670 W | Cooler, lighter, +3.6 pp | | [Ulica Solar UL-655M-132DG](https://comparepv.com/panel/ulica-solar-ul-655m-132dg) | 655 W | Heavier, +5 yr warranty | | [Ulica Solar UL-665M-132HV](https://comparepv.com/panel/ulica-solar-ul-665m-132hv) | 665 W | Very close match | | [Ulica Solar UL-670M-132DG](https://comparepv.com/panel/ulica-solar-ul-670m-132dg) | 670 W | Heavier, +0.3 pp, +5 yr warranty | | [Ulica Solar UL-700M-132DGN](https://comparepv.com/panel/ulica-solar-ul-700m-132dgn) | 700 W | Cooler, +1.3 pp, +5 yr warranty | | [Ulica Solar UL-705M-132DGN](https://comparepv.com/panel/ulica-solar-ul-705m-132dgn) | 705 W | Cooler, +1.4 pp, +5 yr warranty | | [AIKO AIKO-A805-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a805-grh78dw) | 805 W | +145 W, cooler, +3.9 pp | | [AIKO AIKO-A800-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a800-grh78dw) | 800 W | +140 W, cooler, +3.6 pp | | [AIKO AIKO-A795-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a795-grh78dw) | 795 W | +135 W, cooler, +3.6 pp | | [AIKO AIKO-A790-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a790-grh78dw) | 790 W | +130 W, cooler, +3.4 pp | --- Source: https://comparepv.com/panel/ulica-solar-ul-660m-132hv Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.