--- title: "Emmvee E575HCBT144-T vs Emmvee E590HCBT144-T - Solar Panel Comparison | ComparePV" description: "Compare Emmvee E575HCBT144-T vs Emmvee E590HCBT144-T side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/emmvee-e575hcbt144-t/emmvee-e590hcbt144-t" updated: 2026-09-11 --- # Emmvee E575HCBT144-T vs Emmvee E590HCBT144-T E590HCBT144-T leads on the differences that matter The largest is module efficiency: 0.58 pp more efficient. 16 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Emmvee E575HCBT144-T](https://comparepv.com/panel/emmvee-e575hcbt144-t) | [Emmvee E590HCBT144-T](https://comparepv.com/panel/emmvee-e590hcbt144-t) | | Manufacturer | Emmvee | Emmvee | | Power | 575 Wp | 590 Wp | | Efficiency | 22.26 % | 22.84 % | | Technology | TOPCon | TOPCon | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | E575HCBT144-T | E590HCBT144-T | Difference | | --- | --- | --- | --- | | Module efficiency | 22.26 % | 22.84 % | +0.58 pp for E590HCBT144-T | | Power density | 222.6 Wp/m² | 228.4 Wp/m² | +5.8 Wp/m² for E590HCBT144-T | | Rated power | 575 Wp | 590 Wp | +15 W for E590HCBT144-T | ## Every compared parameter | Parameter | E575HCBT144-T | E590HCBT144-T | | --- | --- | --- | | Rated power | 575 Wp | 590 Wp | | Module efficiency | 22.26 % | 22.84 % | | Power density | 222.6 Wp/m² | 228.4 Wp/m² | | Open-circuit voltage | 51.27 V | 51.87 V | | Voltage at max power | 42.44 V | 42.93 V | | Short-circuit current | 14.31 A | 14.49 A | | Current at max power | 13.55 A | 13.75 A | | Temperature coefficient | -0.290 %/°C | -0.290 %/°C | | Dimensions | 2278x1134x35 mm | 2278x1134x35 mm | | Module area | 2.583 m² | 2.583 m² | | Weight | 26.0 kg | 26.0 kg | | Weight per kWp | 45.2 kg/kWp | 44.1 kg/kWp | | Product warranty | 12 yrs | 12 yrs | | Performance warranty | 25 yrs | 25 yrs | | Annual degradation | 0.40 %/yr | 0.40 %/yr | | Cell technology | TOPCon | TOPCon | | 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 (-0.290 %/°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, E575HCBT144-T:** 19,292 kWh - **Cumulative output, E590HCBT144-T:** 19,796 kWh - **Gap:** 504 kWh ## Output when hot | Condition | Cell temperature | E575HCBT144-T | E590HCBT144-T | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 575 W | 590 W | 100.0% of rated power | | Cool, bright day | 40 °C | 550 W | 564 W | 95.7% of rated power | | Typical summer roof | 55 °C | 525 W | 539 W | 91.3% of rated power | | Hot roof | 70 °C | 500 W | 513 W | 87.0% of rated power | ## Against the whole database | Measure | E575HCBT144-T | E590HCBT144-T | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #5,593 | #2,617 | 14,005 | E590HCBT144-T leads by 2,976 places | | Power density | #5,549 | #2,598 | 14,005 | E590HCBT144-T leads by 2,951 places | | Heat behaviour | #2,165 | #2,165 | 14,005 | Tied - the same position in the database | | Weight | #646 | #374 | 14,005 | E590HCBT144-T leads by 272 places | | Warranty | #9,798 | #9,798 | 14,005 | Tied - the same position in the database | | Overall | #5,780 | #4,629 | 14,005 | E590HCBT144-T leads by 1,151 places | ## Questions ### Which panel is better: Emmvee E575HCBT144-T or Emmvee E590HCBT144-T? According to our database: **Emmvee E590HCBT144-T** has higher module efficiency (**22.84%** vs **22.26%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Emmvee E575HCBT144-T and Emmvee E590HCBT144-T? **Emmvee E575HCBT144-T** has a module efficiency of **22.26%**, while **Emmvee E590HCBT144-T** is **22.84%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Emmvee E575HCBT144-T use vs Emmvee E590HCBT144-T? **Emmvee E575HCBT144-T** uses **TOPCon** cells; **Emmvee E590HCBT144-T** uses **TOPCon**. 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 E575HCBT144-T and Emmvee E590HCBT144-T? **Emmvee E575HCBT144-T** has a **25 years** power warranty; **Emmvee E590HCBT144-T** has a **25 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 E575HCBT144-T and Emmvee E590HCBT144-T bifacial panels? Both **Emmvee E575HCBT144-T** and **Emmvee E590HCBT144-T** 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 E575HCBT144-T vs Emmvee E605HCBT144-T](https://comparepv.com/compare/emmvee-e575hcbt144-t/emmvee-e605hcbt144-t) - 5 differences, the largest is module efficiency - [Emmvee E575HCBT144-T vs Emmvee E600HCBT144-T](https://comparepv.com/compare/emmvee-e575hcbt144-t/emmvee-e600hcbt144-t) - 4 differences, the largest is module efficiency - [Emmvee E575HCBT144-T vs Emmvee E595HCBT144-T](https://comparepv.com/compare/emmvee-e575hcbt144-t/emmvee-e595hcbt144-t) - 3 differences, the largest is module efficiency - [Emmvee E575HCBT144-T vs Emmvee E585HCBT144-T](https://comparepv.com/compare/emmvee-e575hcbt144-t/emmvee-e585hcbt144-t) - 3 differences, the largest is module efficiency - [Emmvee E575HCBT144-T vs Emmvee E580HCBT144-T](https://comparepv.com/compare/emmvee-e575hcbt144-t/emmvee-e580hcbt144-t) - The same specification on paper - [Emmvee E575HCBT144-T vs Emmvee ES80HCBT144-T](https://comparepv.com/compare/emmvee-e575hcbt144-t/emmvee-es80hcbt144-t) - 3 differences, the largest is performance warranty --- Source: https://comparepv.com/compare/emmvee-e575hcbt144-t/emmvee-e590hcbt144-t 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.