--- title: "Just Solar JST-FCMH-710W-HD vs Just Solar JST-FCMH-715W-HD - Solar Panel Comparison | ComparePV" description: "Compare Just Solar JST-FCMH-710W-HD vs Just Solar JST-FCMH-715W-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-fcmh-710w-hd/just-solar-jst-fcmh-715w-hd" updated: 2026-09-11 --- # Just Solar JST-FCMH-710W-HD vs Just Solar JST-FCMH-715W-HD 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 | [Just Solar JST-FCMH-710W-HD](https://comparepv.com/panel/just-solar-jst-fcmh-710w-hd) | [Just Solar JST-FCMH-715W-HD](https://comparepv.com/panel/just-solar-jst-fcmh-715w-hd) | | Manufacturer | Just Solar | Just Solar | | Power | 710 Wp | 715 Wp | | Efficiency | 22.86 % | 23.02 % | | Technology | HJT | HJT | ## Every compared parameter | Parameter | 710W-HD | 715W-HD | | --- | --- | --- | | Rated power | 710 Wp | 715 Wp | | Module efficiency | 22.86 % | 23.02 % | | Power density | 228.6 Wp/m² | 230.2 Wp/m² | | Open-circuit voltage | 50.71 V | 50.91 V | | Voltage at max power | 43.46 V | 43.68 V | | Short-circuit current | 17.25 A | 17.27 A | | Current at max power | 16.34 A | 16.37 A | | Temperature coefficient | -0.260 %/°C | -0.260 %/°C | | Dimensions | 2384x1303x33 mm | 2384x1303x33 mm | | Module area | 3.106 m² | 3.106 m² | | Weight | 38.3 kg | 38.3 kg | | Weight per kWp | 53.9 kg/kWp | 53.6 kg/kWp | | Product warranty | 15 yrs | 15 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | 0.30 %/yr | 0.30 %/yr | | Cell technology | HJT | HJT | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 132 | 132 | | 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 (-0.260 %/°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, 710W-HD:** 24,193 kWh - **Cumulative output, 715W-HD:** 24,363 kWh - **Gap:** 170 kWh ## Output when hot | Condition | Cell temperature | 710W-HD | 715W-HD | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 710 W | 715 W | 100.0% of rated power | | Cool, bright day | 40 °C | 682 W | 687 W | 96.1% of rated power | | Typical summer roof | 55 °C | 655 W | 659 W | 92.2% of rated power | | Hot roof | 70 °C | 627 W | 631 W | 88.3% of rated power | ## Against the whole database | Measure | 710W-HD | 715W-HD | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #2,536 | #1,797 | 14,005 | 715W-HD leads by 739 places | | Power density | #2,474 | #2,018 | 14,005 | 715W-HD leads by 456 places | | Heat behaviour | #511 | #511 | 14,005 | Tied - the same position in the database | | Weight | #8,122 | #7,566 | 14,005 | 715W-HD leads by 556 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #608 | #450 | 14,005 | 715W-HD leads by 158 places | ## Questions ### Which panel is better: Just Solar JST-FCMH-710W-HD or Just Solar JST-FCMH-715W-HD? According to our database: **Just Solar JST-FCMH-**715 W**-HD** has higher module efficiency (**23.02%** vs **22.86%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Just Solar JST-FCMH-710W-HD and Just Solar JST-FCMH-715W-HD? **Just Solar JST-FCMH-**710 W**-HD** has a module efficiency of **22.86%**, while **Just Solar JST-FCMH-**715 W**-HD** is **23.02%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Just Solar JST-FCMH-710W-HD use vs Just Solar JST-FCMH-715W-HD? **Just Solar JST-FCMH-**710 W**-HD** uses **HJT** cells; **Just Solar JST-FCMH-**715 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-FCMH-710W-HD and Just Solar JST-FCMH-715W-HD? **Just Solar JST-FCMH-**710 W**-HD** has a **30 years** power warranty; **Just Solar JST-FCMH-**715 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-FCMH-710W-HD and Just Solar JST-FCMH-715W-HD bifacial panels? Both **Just Solar JST-FCMH-**710 W**-HD** and **Just Solar JST-FCMH-**715 W**-HD** 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 - [Just Solar JST-FCMH-710W-HD vs Just Solar JST-FCMH-740W-HD](https://comparepv.com/compare/just-solar-jst-fcmh-710w-hd/just-solar-jst-fcmh-740w-hd) - 6 differences, the largest is module efficiency - [Just Solar JST-FCMH-710W-HD vs Just Solar JST-FCMH-735W-HD](https://comparepv.com/compare/just-solar-jst-fcmh-710w-hd/just-solar-jst-fcmh-735w-hd) - 5 differences, the largest is module efficiency - [Just Solar JST-FCMH-710W-HD vs Just Solar JST-FCMH-730W-HD](https://comparepv.com/compare/just-solar-jst-fcmh-710w-hd/just-solar-jst-fcmh-730w-hd) - 3 differences, the largest is module efficiency - [Just Solar JST-FCMH-710W-HD vs Just Solar JST-FCMH-725W-HD](https://comparepv.com/compare/just-solar-jst-fcmh-710w-hd/just-solar-jst-fcmh-725w-hd) - 3 differences, the largest is module efficiency - [Just Solar JST-FCMH-710W-HD vs Just Solar JST-FCMH-720W-HD](https://comparepv.com/compare/just-solar-jst-fcmh-710w-hd/just-solar-jst-fcmh-720w-hd) - 3 differences, the largest is module efficiency - [Just Solar JST-FCMH-710W-HD vs Just Solar JST-EBMH-560W-D](https://comparepv.com/compare/just-solar-jst-fcmh-710w-hd/just-solar-jst-ebmh-560w-d) - 15 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/just-solar-jst-fcmh-710w-hd/just-solar-jst-fcmh-715w-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.