--- title: "Emmvee E550HCBG144 550W Solar Panel - Specs & Review | ComparePV" description: "Emmvee E550HCBG144 550W solar panel. Specs: 21.29% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/emmvee-e550hcbg144" updated: 2026-09-11 --- # Emmvee E550HCBG144 Warranty pick, no clear weak spot 589 panels in the segment PERC 550-600 W ## Identity - **Manufacturer:** Emmvee - **Model:** E550HCBG144 - **Series:** SAPPHIRE - **Rated power:** 550 W - **Cell technology:** PERC - **Bifacial:** yes ## How it compares Compared against segment PERC 550-600 W (589 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 550 W | 560 W | Weak - bottom 15% | | | Module efficiency | 21.29% | 21.29% | Typical | 8,708 | | Power density | 212.9 | 212.9 | Typical | 8,497 | | Temperature coefficient | -0.350 | -0.350 | Typical | 10,419 | | Weight (kg) | 30.0 kg | 30.8 kg | Typical | | | Performance warranty | 30 yrs | 27 yrs | Strong - top 25% | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.29% | 21.29% | Typical | 8,708 | | Power density | 212.9 | 212.9 | Typical | 8,497 | | Temperature coefficient | -0.350 | -0.350 | Typical | 10,419 | | Weight per kWp | 54.5 | 52.7 | Typical | 8,867 | | Performance warranty | 30 yrs | 27 yrs | Strong - top 25% | 21 | ### Strengths - **30 year performance warranty** - Top 25% of the PERC 550-600 W segment, against a median of 27 yrs. - **Best for:** Commercial, utility-scale and shaded-installations. ## Specification ### Electrical - **Rated power (Pmax):** 550 W - **Efficiency:** 21.29 % - **Voltage at Pmax (Vmp):** 41.62 V - **Current at Pmax (Imp):** 13.22 A - **Open-circuit voltage (Voc):** 49.90 V - **Short-circuit current (Isc):** 14.01 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.350 %/degC - **Temperature coefficient of Voc:** -0.280 %/degC - **Temperature coefficient of Isc:** 0.050 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 144 - **Bifacial:** yes ### Physical - **Length:** 2278 mm - **Width:** 1134 mm - **Thickness:** 35 mm - **Weight:** 30.0 kg - **Area:** 2.58 m2 - **Power density:** 212.9 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 85.0 % - **First-year degradation:** 2.00 % - **Annual degradation:** 0.45 % - **Output after 30 years:** 467 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 8708 of 14005 | | Power density | 8497 of 14005 | | Temperature coefficient | 10419 of 14005 | | Weight | 8867 of 14005 | | Warranty | 21 of 14005 | ## Pros - **Top Performer in All 7 Kiwa PVEL 2024 Categories** - Emmvee is the only Indian manufacturer and one of only 9 companies worldwide to achieve Top Performer status across all seven Kiwa PVEL 2024 test sequences (PID, LID+LETID, Damp Heat, Thermal Cycling, Mechanical Stress, Hail Stress, and PAN Performance). This independent durability certification is a key factor in assessing long-term investment risk. - **30-Year Linear Power Output Warranty** - The SAPPHIRE series carries a 30-year linear power warranty — longer than the 25-year standard offered by most mid-range competitors. The manufacturer's warranty claim rate of 0.0002% of revenue confirms that this service commitment is backed by real-world reliability. - **Bifacial Glass-Glass Construction with Up to 30% Rear-Side Gain** - The module generates power from both faces — the rear glass replaces a conventional backsheet, eliminating delamination risk and improving long-term moisture resistance. In ground-mount installations or on high-albedo surfaces (TPO membranes, gravel), bifacial operation can deliver 10–30% additional net energy yield compared to standard monofacial modules. - **High Low-Irradiance Performance (≥95% of STC Output @ 200 W/m²)** - The SAPPHIRE datasheet specifies a minimum of 95% of STC efficiency at 200 W/m² irradiance (25°C, AM1.5). In the Polish climate, where a significant share of solar hours occur under diffuse irradiance conditions (100–400 W/m²), this parameter has a direct and measurable impact on annual energy yield. - **Half-Cut Mono PERC Cells with 10-Busbar (Multi-Busbar) Layout** - The half-cut cell format reduces the current in each cell half by 50%, lowering resistive losses and decreasing susceptibility to microcracks under mechanical loading from snow and wind. The 10-busbar multi-busbar configuration shortens the electron collection path, improving current harvest uniformity and sustaining module performance under partial shading conditions. ## Cons - **Not Listed as a BNEF Tier-1 Bankable Manufacturer** - Emmvee does not appear on the BNEF Tier-1 Bankable Manufacturers list (confirmed in manufacturer data: tier\_1\_bankable: false). For utility-scale PV projects financed by commercial banks or infrastructure funds, Tier-1 status is often a hard prerequisite — the absence of this designation may restrict financing options or require additional technical insurance coverage. - **PERC Technology Trails N-Type in Efficiency** - The maximum module efficiency of the SAPPHIRE series is 21.29%, while the peer-comparable Gamko GKA182N132 (likely N-type TOPCon) reaches 23.16% — a ~1.87 percentage point gap that translates into measurable differences in yield per m². PERC cells also exhibit a higher annual degradation rate (~0.55%/year) compared to N-type TOPCon (~0.40%/year), resulting in a cumulative multi-percent power loss disadvantage over a 30-year project horizon. ## About this series The Emmvee SAPPHIRE series consists of **bifacial glass-glass** panels designed to effectively increase energy yield not only from the front, but also from the rear side. This solution is particularly effective in areas where the substrate reflects light (e.g., light gravel, membranes, light concrete) and in ground-mounted installations. The use of **half-cut mono PERC solar cells** helps to minimize losses and improve resistance to microcracks, which is important in Polish wind and snow load conditions. Additionally, the **multi-busbar technology** supports better current collection and more stable module operation in daily use. In practice, SAPPHIRE solves the common problem of reduced production under less intense sunlight - it maintains high efficiency even in low irradiance conditions. The series is designed for installers and investors who expect **lower LCOE and faster return on investment** without compromising durability, especially in commercial and utility-scale projects, as well as on demanding roofs. ## Notable figures - Efficiency of 21.3% matches the \*\*PERC 550-600W\*\* median - Power density of 212.9 W/m² matches the \*\*PERC 550-600W\*\* median - Temperature coefficient of -0.35%/°C matches the \*\*PERC 550-600W\*\* median - 70% bifaciality enables rear-side power generation, boosting yield by 4-10% on reflective surfaces - #8708 for efficiency, #10419 for temperature performance out of 14005 panels ## Questions ### How much additional energy can be gained from the bifacial design of Emmvee SAPPHIRE panels? Emmvee SAPPHIRE panels operate bifacially — the rear side of the module captures light reflected from the ground surface, which according to manufacturer data can increase energy yield by up to 30% compared to a conventional monofacial panel. The effect is most pronounced in ground-mounted installations, on rooftops with light-colored membranes, or on surfaces covered with light gravel or concrete. On a typical pitched roof the bifacial gain is lower, but still measurable. ### What warranty is provided for Emmvee SAPPHIRE panels and what does it cover? The manufacturer provides a 12-year product warranty covering material and workmanship defects, along with a 30-year linear power warranty. This means that over 30 years the panel is guaranteed to maintain output performance in accordance with Emmvee's rated degradation curve. It is advisable to retain proof of purchase and the warranty certificate, as any claims must be submitted directly to the manufacturer or an authorized distributor. ### Are Emmvee SAPPHIRE panels suitable for ground-mounted installations and utility-scale PV farms? Yes, the SAPPHIRE series is specifically designed for ground-mounted installations and commercial-scale projects. The glass-glass construction provides high mechanical resistance to snow and wind loads, while bifacial operation on open-frame racking structures maximizes yield through ground-reflected irradiance. With output up to 550 Wp and a 144 half-cut cell format, fewer modules are required to reach the target farm capacity. ### Does the Emmvee SAPPHIRE perform well in winter and under the overcast conditions typical of Poland? The mono PERC half-cut cell technology combined with 10-busbar current collection translates into improved performance under low irradiance — on overcast days and during Polish winters. The half-cut cell design also splits the module into two independent circuits, so partial shading or snow coverage on one half of the panel does not suppress output from the other half. The manufacturer declares resistance to hail impacts of up to 40 mm in diameter. ### How does the glass-glass construction of the Emmvee SAPPHIRE series differ from standard glass-backsheet panels? In conventional panels the rear of the module consists of a polymer backsheet; in the SAPPHIRE series this is replaced by a tempered glass pane. This provides greater resistance to moisture ingress, corrosion, and micro-cracks in the cells caused by cyclic mechanical loading. The glass-glass construction extends module service life, which is one of the reasons the manufacturer offers a 30-year power warranty. The trade-off is higher weight — an SAPPHIRE module weighs approximately 30 kg, which must be accounted for in the structural roof design. ### Is Emmvee a proven manufacturer, and where are SAPPHIRE series panels produced? Emmvee is an Indian manufacturer headquartered in Bangalore, active in the photovoltaic market for several decades and exporting panels to European and Asian markets. The company is not currently listed among Tier 1 manufacturers by Bloomberg NEF, which is worth considering when arranging bank financing for larger projects. For prosumer installations and smaller-scale farms, however, the module cost and technical specifications of the SAPPHIRE series are competitive relative to higher-priced manufacturers. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/Saphire144132120108-India-2807c18914ca.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, lighter, +3.7 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | Cooler, lighter, +3.5 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, lighter, +3.4 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | Cooler, lighter, +3.3 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | Cooler, lighter, +3.2 pp | | [Emmvee E530HCM144-B](https://comparepv.com/panel/emmvee-e530hcm144-b) | 530 W | Lighter, -0.8 pp, -5 yr warranty | | [Emmvee E535HCM144-B](https://comparepv.com/panel/emmvee-e535hcm144-b) | 535 W | Lighter, -0.6 pp, -5 yr warranty | | [Emmvee E540HCM144-B](https://comparepv.com/panel/emmvee-e540hcm144-b) | 540 W | Lighter, -0.4 pp, -5 yr warranty | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | +100 W, cooler, +3.9 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | +95 W, cooler, +3.7 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | +90 W, cooler, +3.5 pp | | [AIKO AIKO-A635-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a635-mae72mw) | 635 W | +85 W, cooler, +3.3 pp | | [AIKO AIKO-A630-MAH72Dw](https://comparepv.com/panel/aiko-aiko-a630-mah72dw) | 630 W | +80 W, cooler, +3.1 pp | --- Source: https://comparepv.com/panel/emmvee-e550hcbg144 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.