--- title: "Emmvee E545HCBG144 vs Emmvee E550HCBG144 - Solar Panel Comparison | ComparePV" description: "Compare Emmvee E545HCBG144 vs Emmvee E550HCBG144 side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/emmvee-e545hcbg144/emmvee-e550hcbg144" updated: 2026-09-11 --- # Emmvee E545HCBG144 vs Emmvee E550HCBG144 Identical on every published parameter All 19 comparable parameters agree. Two records this alike are usually one panel sold under two names, or two bins of the same production line - decide on price and on who you would rather buy from. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Emmvee E545HCBG144](https://comparepv.com/panel/emmvee-e545hcbg144) | [Emmvee E550HCBG144](https://comparepv.com/panel/emmvee-e550hcbg144) | | Manufacturer | Emmvee | Emmvee | | Power | 545 Wp | 550 Wp | | Efficiency | 21.10 % | 21.29 % | | Technology | PERC | PERC | ## Every compared parameter | Parameter | E545HCBG144 | E550HCBG144 | | --- | --- | --- | | Rated power | 545 Wp | 550 Wp | | Module efficiency | 21.10 % | 21.29 % | | Power density | 211.0 Wp/m² | 212.9 Wp/m² | | Open-circuit voltage | 49.75 V | 49.90 V | | Voltage at max power | 41.61 V | 41.62 V | | Short-circuit current | 13.88 A | 14.01 A | | Current at max power | 13.10 A | 13.22 A | | Temperature coefficient | -0.350 %/°C | -0.350 %/°C | | Dimensions | 2278x1134x35 mm | 2278x1134x35 mm | | Module area | 2.583 m² | 2.583 m² | | Weight | 30.0 kg | 30.0 kg | | Weight per kWp | 55.0 kg/kWp | 54.5 kg/kWp | | Product warranty | 12 yrs | 12 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | 0.45 %/yr | 0.45 %/yr | | Cell technology | PERC | PERC | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 144 | 144 | | Bifacial | Yes | Yes | ## Thirty-year yield Each panel's own declared degradation curve, at 1,200 kWh/kWp a year Same temp coeff. for both panels (-0.350 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other. - **Cumulative output, E545HCBG144:** 17,947 kWh - **Cumulative output, E550HCBG144:** 18,112 kWh - **Gap:** 165 kWh ## Output when hot | Condition | Cell temperature | E545HCBG144 | E550HCBG144 | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 545 W | 550 W | 100.0% of rated power | | Cool, bright day | 40 °C | 516 W | 521 W | 94.8% of rated power | | Typical summer roof | 55 °C | 488 W | 492 W | 89.5% of rated power | | Hot roof | 70 °C | 459 W | 463 W | 84.2% of rated power | ## Against the whole database | Measure | E545HCBG144 | E550HCBG144 | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #9,297 | #8,708 | 14,005 | E550HCBG144 leads by 589 places | | Power density | #9,312 | #8,497 | 14,005 | E550HCBG144 leads by 815 places | | Heat behaviour | #10,419 | #10,419 | 14,005 | Tied - the same position in the database | | Weight | #9,429 | #8,867 | 14,005 | E550HCBG144 leads by 562 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #7,375 | #6,944 | 14,005 | E550HCBG144 leads by 431 places | ## Questions ### Which panel is better: Emmvee E545HCBG144 or Emmvee E550HCBG144? According to our database: **Emmvee E550HCBG144** has higher module efficiency (**21.29%** vs **21.10%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Emmvee E545HCBG144 and Emmvee E550HCBG144? **Emmvee E545HCBG144** has a module efficiency of **21.10%**, while **Emmvee E550HCBG144** is **21.29%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Emmvee E545HCBG144 use vs Emmvee E550HCBG144? **Emmvee E545HCBG144** uses **PERC** cells; **Emmvee E550HCBG144** uses **PERC**. Modern **n-type** technologies (**TOPCon**, **HJT**, BC) typically deliver higher efficiency and lower degradation compared to older **PERC** (p-type) cells. ### What is the warranty on Emmvee E545HCBG144 and Emmvee E550HCBG144? **Emmvee E545HCBG144** has a **30 years** power warranty; **Emmvee E550HCBG144** has a **30 years** power warranty. The power warranty guarantees a minimum percentage of rated output at the end of the warranty period (typically 80**-87%**). Product (materials) warranties are usually shorter. ### Are Emmvee E545HCBG144 and Emmvee E550HCBG144 bifacial panels? Both **Emmvee E545HCBG144** and **Emmvee E550HCBG144** are bifacial - they capture reflected light from the ground, which can add 5**-15%** more annual energy on ground-mount or elevated rooftop installations with a light surface beneath. ## Related comparisons - [Emmvee E545HCBG144 vs Emmvee E540HCBG144](https://comparepv.com/compare/emmvee-e545hcbg144/emmvee-e540hcbg144) - One difference: module efficiency - [Emmvee E545HCBG144 vs Emmvee E535HCBG144](https://comparepv.com/compare/emmvee-e545hcbg144/emmvee-e535hcbg144) - 3 differences, the largest is module efficiency - [Emmvee E545HCBG144 vs Emmvee E530HCBG144](https://comparepv.com/compare/emmvee-e545hcbg144/emmvee-e530hcbg144) - 3 differences, the largest is module efficiency - [Emmvee E545HCBG144 vs Emmvee E500HCBG132](https://comparepv.com/compare/emmvee-e545hcbg144/emmvee-e500hcbg132) - 8 differences, the largest is rated power - [Emmvee E545HCBG144 vs Emmvee E495HCBG132](https://comparepv.com/compare/emmvee-e545hcbg144/emmvee-e495hcbg132) - 9 differences, the largest is rated power - [Emmvee E545HCBG144 vs Emmvee E490HCBG132](https://comparepv.com/compare/emmvee-e545hcbg144/emmvee-e490hcbg132) - 12 differences, the largest is rated power --- Source: https://comparepv.com/compare/emmvee-e545hcbg144/emmvee-e550hcbg144 Not in this file, on the page: the thirty-year yield curve year by year at a cell temperature you pick and a written summary generated on request.