--- title: "Just Solar JST-EBMH-555W-D vs Just Solar JST-FCMH-735W-HD - Solar Panel Comparison | ComparePV" description: "Compare Just Solar JST-EBMH-555W-D vs Just Solar JST-FCMH-735W-HD side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/just-solar-jst-ebmh-555w-d/just-solar-jst-fcmh-735w-hd" updated: 2026-09-11 --- # Just Solar JST-EBMH-555W-D vs Just Solar JST-FCMH-735W-HD FCMH-735W-HD leads on the differences that matter The largest is module efficiency: 1.96 pp more efficient. 4 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Just Solar JST-EBMH-555W-D](https://comparepv.com/panel/just-solar-jst-ebmh-555w-d) | [Just Solar JST-FCMH-735W-HD](https://comparepv.com/panel/just-solar-jst-fcmh-735w-hd) | | Manufacturer | Just Solar | Just Solar | | Power | 555 Wp | 735 Wp | | Efficiency | 21.70 % | 23.66 % | | Technology | TOPCon | HJT | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | EBMH-555W-D | FCMH-735W-HD | Difference | | --- | --- | --- | --- | | Module efficiency | 21.70 % | 23.66 % | +1.96 pp for FCMH-735W-HD | | Temperature coefficient | -0.360 %/°C | -0.260 %/°C | +0.100 %/°C for FCMH-735W-HD | | Rated power | 555 Wp | 735 Wp | +180 W for FCMH-735W-HD | | Power density | 214.8 Wp/m² | 236.6 Wp/m² | +21.9 Wp/m² for FCMH-735W-HD | | Annual degradation | 0.59 %/yr | 0.30 %/yr | -0.29 %/yr for FCMH-735W-HD | | Weight | 29.0 kg | 38.3 kg | -9.3 kg for EBMH-555W-D | | Short-circuit current | 14.05 A | 17.35 A | 3.30 A apart | | Module area | 2.584 m² | 3.106 m² | 0.522 m² apart | | Cell technology | TOPCon | HJT | TOPCon vs HJT | | Current at max power | 13.28 A | 16.49 A | 3.21 A apart | | Cell count | 144 | 132 | 12 cells apart | | Open-circuit voltage | 50.00 V | 51.71 V | 1.71 V apart | | Bifacial | No | Yes | No vs Yes | | Voltage at max power | 41.80 V | 44.57 V | 2.77 V apart | | Dimensions | 2279x1134x35 mm | 2384x1303x33 mm | 2279x1134x35 mm vs 2384x1303x33 mm | ## Every compared parameter | Parameter | EBMH-555W-D | FCMH-735W-HD | | --- | --- | --- | | Rated power | 555 Wp | 735 Wp | | Module efficiency | 21.70 % | 23.66 % | | Power density | 214.8 Wp/m² | 236.6 Wp/m² | | Open-circuit voltage | 50.00 V | 51.71 V | | Voltage at max power | 41.80 V | 44.57 V | | Short-circuit current | 14.05 A | 17.35 A | | Current at max power | 13.28 A | 16.49 A | | Temperature coefficient | -0.360 %/°C | -0.260 %/°C | | Dimensions | 2279x1134x35 mm | 2384x1303x33 mm | | Module area | 2.584 m² | 3.106 m² | | Weight | 29.0 kg | 38.3 kg | | Weight per kWp | 52.3 kg/kWp | 52.1 kg/kWp | | Product warranty | 15 yrs | 15 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | 0.59 %/yr | 0.30 %/yr | | Cell technology | TOPCon | HJT | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 144 | 132 | | Bifacial | No | Yes | ## Thirty-year yield Each panel's own declared degradation curve, at 1,200 kWh/kWp a year - **Cumulative output, EBMH-555W-D:** 17,671 kWh - **Cumulative output, FCMH-735W-HD:** 25,044 kWh - **Gap:** 7,373 kWh ## Output when hot | Condition | Cell temperature | EBMH-555W-D | FCMH-735W-HD | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 555 W | 735 W | 100.0% of rated power | | Cool, bright day | 40 °C | 525 W | 706 W | 94.6% of rated power | | Typical summer roof | 55 °C | 495 W | 678 W | 89.2% of rated power | | Hot roof | 70 °C | 465 W | 649 W | 83.8% of rated power | ## Against the whole database | Measure | EBMH-555W-D | FCMH-735W-HD | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #7,421 | #602 | 14,005 | FCMH-735W-HD leads by 6,819 places | | Power density | #8,148 | #582 | 14,005 | FCMH-735W-HD leads by 7,566 places | | Heat behaviour | #12,345 | #511 | 14,005 | FCMH-735W-HD leads by 11,834 places | | Weight | #5,708 | #5,576 | 14,005 | FCMH-735W-HD leads by 132 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #5,588 | #162 | 14,005 | FCMH-735W-HD leads by 5,426 places | ## Questions ### Which panel is better: Just Solar JST-EBMH-555W-D or Just Solar JST-FCMH-735W-HD? According to our database: **Just Solar JST-FCMH-**735 W**-HD** has higher module efficiency (**23.66%** vs **21.70%**); **Just Solar JST-FCMH-**735 W**-HD** tolerates heat better (temp coeff **-0.260%/°C** vs **-0.360%/°C**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Just Solar JST-EBMH-555W-D and Just Solar JST-FCMH-735W-HD? **Just Solar JST-EBMH-**555 W**-D** has a module efficiency of **21.70%**, while **Just Solar JST-FCMH-**735 W**-HD** is **23.66%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Just Solar JST-EBMH-555W-D use vs Just Solar JST-FCMH-735W-HD? **Just Solar JST-EBMH-**555 W**-D** uses **TOPCon** cells; **Just Solar JST-FCMH-**735 W**-HD** uses **HJT**. 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 Just Solar JST-EBMH-555W-D and Just Solar JST-FCMH-735W-HD? **Just Solar JST-EBMH-**555 W**-D** has a **30 years** power warranty; **Just Solar JST-FCMH-**735 W**-HD** 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 Just Solar JST-EBMH-555W-D and Just Solar JST-FCMH-735W-HD bifacial panels? **Just Solar JST-FCMH-**735 W**-HD** is bifacial (captures light from both faces); **Just Solar JST-EBMH-**555 W**-D** is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath. ## Related comparisons - [Just Solar JST-EBMH-555W-D vs Just Solar JST-EBMH-560W-D](https://comparepv.com/compare/just-solar-jst-ebmh-555w-d/just-solar-jst-ebmh-560w-d) - One difference: module efficiency - [Just Solar JST-FCMH-735W-HD vs Just Solar JST-FCMH-740W-HD](https://comparepv.com/compare/just-solar-jst-fcmh-735w-hd/just-solar-jst-fcmh-740w-hd) - The same specification on paper - [Just Solar JST-FCMH-735W-HD vs Just Solar JST-FCMH-730W-HD](https://comparepv.com/compare/just-solar-jst-fcmh-735w-hd/just-solar-jst-fcmh-730w-hd) - The same specification on paper - [Just Solar JST-FCMH-735W-HD vs Just Solar JST-FCMH-725W-HD](https://comparepv.com/compare/just-solar-jst-fcmh-735w-hd/just-solar-jst-fcmh-725w-hd) - 3 differences, the largest is module efficiency - [Just Solar JST-FCMH-735W-HD vs Just Solar JST-FCMH-720W-HD](https://comparepv.com/compare/just-solar-jst-fcmh-735w-hd/just-solar-jst-fcmh-720w-hd) - 3 differences, the largest is module efficiency - [Just Solar JST-FCMH-735W-HD vs Just Solar JST-FCMH-715W-HD](https://comparepv.com/compare/just-solar-jst-fcmh-735w-hd/just-solar-jst-fcmh-715w-hd) - 3 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/just-solar-jst-ebmh-555w-d/just-solar-jst-fcmh-735w-hd 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.