--- title: "Solar-Fabrik Mono S4 Halfcut Chroma Orange 420W 420W Solar Panel - Specs & Review | ComparePV" description: "Solar-Fabrik Mono S4 Halfcut Chroma Orange 420W 420W solar panel. Specs: 21.02% efficiency, Monocrystalline cells." source: "https://comparepv.com/panel/solar-fabrik-mono-s4-halfcut-chroma-orange-420w" updated: 2026-09-11 --- # Solar-Fabrik Mono S4 Halfcut Chroma Orange 420W Middle of its segment, modest efficiency 1,218 panels in the segment TOPCon 400-450 W ## Identity - **Manufacturer:** Solar-Fabrik - **Model:** Mono S4 Halfcut Chroma Orange 420W - **Series:** Mono S4 Halfcut Chroma Orange - **Rated power:** 420 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 400-450 W (1218 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 420 W | 435 W | Weak - bottom 16% | | | Module efficiency | 21.02% | 22.00% | Weak - bottom 6% | 9,696 | | Power density | 210.2 | 220.2 | Weak - bottom 6% | 9,728 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight (kg) | 24.0 kg | 22.0 kg | Weak - bottom 13% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.02% | 22.00% | Weak - bottom 6% | 9,696 | | Power density | 210.2 | 220.2 | Weak - bottom 6% | 9,728 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight per kWp | 57.1 | 51.4 | Weak - bottom 13% | 11,083 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **21.02% module efficiency** - Bottom 6% of the TOPCon 400-450 W segment, against a median of 22.00%. Ranked 9,696th in the whole database. - **210.2 watts per square metre** - Bottom 6% of the TOPCon 400-450 W segment, against a median of 220.2. Ranked 9,728th in the whole database. - **57.1 kg per kWp** - Bottom 13% of the TOPCon 400-450 W segment, against a median of 51.4. - **Best for:** BIPV, residential, commercial and shaded-installations. - **Not ideal for:** Tight roof space, roofs where every square metre has to count and weight-limited structures. ## Specification ### Electrical - **Rated power (Pmax):** 420 W - **Efficiency:** 21.02 % - **Voltage at Pmax (Vmp):** 29.07 V - **Current at Pmax (Imp):** 14.45 A - **Open-circuit voltage (Voc):** 34.69 V - **Short-circuit current (Isc):** 15.29 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:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 96 - **Bifacial:** yes ### Physical - **Length:** 1762 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 24.0 kg - **Area:** 2.00 m2 - **Power density:** 210.2 Wp/m2 ### Warranty and degradation - **Product warranty:** 30 years - **Performance warranty:** 30 years ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 9696 of 14005 | | Power density | 9728 of 14005 | | Temperature coefficient | 2165 of 14005 | | Weight | 11083 of 14005 | | Warranty | 21 of 14005 | ## About this series The Mono S4 Halfcut Chroma Orange series is Solar Fabrik's answer for buildings where roof aesthetics matter just as much as system performance. The key feature is **copper-red tinted front glass similar to RAL 8004**, which blends the module into the color palette of traditional ceramic roof tiles and allows solar installations in places where classic black panels would be unacceptable - on historic buildings, in heritage conservation zones, or in old town centers. The panel uses **bifacial N-Type TopCon half-cut cell technology** in a **glass-glass** construction, delivering extra energy yield from the rear side of the module along with significantly higher mechanical and fire resistance compared to conventional backsheet modules. This construction also improves resistance to ammonia, salt, and hail, making the series a solid choice for agricultural sites and coastal regions. The manufacturer backs the module with a **30-year product warranty and linear performance warranty**, reflecting confidence in the durability of the glass-glass build. It's a solution for investors, architects, and installers looking for a compromise between heritage protection requirements and real-world solar energy production. ## Notable figures - Module efficiency of 21.0% is 1.0pp below average for \*\*TOPCon 400-450W\*\* panels (median: 22.0%) - 210.2 W/m² power density is 10.0 W/m² below \*\*TOPCon 400-450W\*\* median (220.2 W/m²) - requires larger installation area - Temperature coefficient of -0.29%/°C matches the \*\*TOPCon 400-450W\*\* median - At 24.0 kg (2.0 kg above \*\*TOPCon 400-450W\*\* median of 22.0 kg), requires checking roof load capacity - 80% bifaciality enables rear-side power generation, boosting yield by 4-12% on reflective surfaces ## Questions ### Are Solar-Fabrik Mono S4 Halfcut Chroma Orange panels suitable for roofs with ceramic tiles in heritage conservation areas? Yes, that's the main purpose of this series. The copper-red front glass, close to RAL 8004, blends the module into the color of traditional ceramic roof tiles, so the installation doesn't stand out against historic buildings. This solution is often accepted by conservation authorities in places where standard black panels would be rejected, such as old town centers or listed heritage buildings. ### Does the colored glass reduce the panel's efficiency compared to black modules? The tinted front glass causes a certain efficiency loss compared to standard black panels in the same series, since part of the light is absorbed or reflected by the pigment. Solar-Fabrik partly offsets this with bifacial TOPCon technology, which additionally captures light reflected off the roof on the rear side of the module, narrowing the yield gap. ### What is bifacial N-type TOPCon technology and what advantages does it bring in this series? TOPCon (Tunnel Oxide Passivated Contact) is an N-type cell technology offering higher efficiency and lower degradation than conventional PERC cells. In its bifacial version, the module also generates power from its rear side, using light reflected off the roof or surroundings. The glass-glass construction further increases cell rigidity and durability, resulting in more stable performance over the module's lifetime. ### What is the maximum power output and warranty for this series? Modules in the Mono S4 Halfcut Chroma Orange series reach up to 420 Wp. Solar-Fabrik backs them with a 30-year product warranty and a 30-year linear power warranty - among the longest terms on the market, reflecting the manufacturer's confidence in the durability of the glass-glass construction. ### Will Chroma Orange panels hold up on a farm building or near the coast? Yes. The glass-glass construction provides higher resistance to ammonia, salt, and hail compared to modules with a back sheet, making this series a good choice for livestock buildings, farms, and properties in coastal areas, where standard panels degrade faster. ### Does installing Solar-Fabrik Chroma Orange panels require special mounting hardware or an inverter? No, the modules are mounted on standard roof racking just like regular silicon panels, with no special hardware needed. However, due to the bifacial design, it's worth ensuring adequate clearance and a light, reflective surface beneath the panels, such as light-colored tiles, to make the most of the rear-side gain. The inverter should support the slightly higher voltages typical of bifacial modules. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/au_s4_chr_orange_420_hc_96_de-1853df3b3357.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Just Solar JST-EDMH-(445-465)W-TD (465W class)](https://comparepv.com/panel/just-solar-jst-edmh-445-465-w-td-465w-class) | 465 W | +45 W, lighter, +2.8 pp | | [Luxor Solar LX-465M/182R-96+ GG](https://comparepv.com/panel/luxor-lx-465m-182r-96-gg) | 465 W | +45 W, cooler, +2.8 pp | | [Maxeon SPR-MAX7-470](https://comparepv.com/panel/maxeon-spr-max7-470) | 470 W | +50 W, +2.7 pp, +10 yr warranty | | [AIKO AIKO-A470-MAH54Mb](https://comparepv.com/panel/aiko-aiko-a470-mah54mb) | 470 W | +50 W, cooler, +2.6 pp | | [AIKO AIKO-A460-MAH54Mb](https://comparepv.com/panel/aiko-shenzhen-aiko-digital-energy-technology-co-ltd-aiko-a460-mah54mb-1) | 460 W | +40 W, lighter, +2.6 pp | | [TCL Zhonghuan HSM-BD54-LA470](https://comparepv.com/panel/tcl-zhonghuan-hsm-bd54-la470) | 470 W | +50 W, cooler, +2.6 pp | | [Solar-Fabrik Mono S4 HC V 400 BF-DG](https://comparepv.com/panel/solar-fabrik-mono-s4-hc-v-400-bf-dg) | 400 W | -20 W, -1.0 pp | | [Solar-Fabrik Mono S4 Halfcut Trend Full Black 445 W](https://comparepv.com/panel/solar-fabrik-mono-s4-halfcut-trend-full-black-445-w) | 445 W | +25 W, +1.3 pp | | [Solar-Fabrik Mono S4 Halfcut Trend Full Black 450 W](https://comparepv.com/panel/solar-fabrik-mono-s4-halfcut-trend-full-black-450-w) | 450 W | +30 W, +1.5 pp | | [Solar-Fabrik Mono S4 Halfcut Trend White 455W](https://comparepv.com/panel/solar-fabrik-mono-s4-halfcut-trend-white-455w) | 455 W | +35 W, hotter, +1.8 pp | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +90 W, cooler, +4.0 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +75 W, lighter, +3.8 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +85 W, cooler, +3.7 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +70 W, lighter, +3.5 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +80 W, cooler, +3.5 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +80 W, cooler, +3.5 pp | --- Source: https://comparepv.com/panel/solar-fabrik-mono-s4-halfcut-chroma-orange-420w Not in this file, on the page: a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.