--- title: "Just Solar JST-EDMH-450W-TD vs Just Solar JST-EDMH-465W-TD - Solar Panel Comparison | ComparePV" description: "Compare Just Solar JST-EDMH-450W-TD vs Just Solar JST-EDMH-465W-TD 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-edmh-450w-td/just-solar-jst-edmh-465w-td" updated: 2026-09-11 --- # Just Solar JST-EDMH-450W-TD vs Just Solar JST-EDMH-465W-TD 465W-TD leads on the differences that matter The largest is module efficiency: 0.76 pp more efficient. 16 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Just Solar JST-EDMH-450W-TD](https://comparepv.com/panel/just-solar-jst-edmh-450w-td) | [Just Solar JST-EDMH-465W-TD](https://comparepv.com/panel/just-solar-jst-edmh-465w-td) | | Manufacturer | Just Solar | Just Solar | | Power | 450 Wp | 465 Wp | | Efficiency | 23.05 % | 23.81 % | | Technology | TOPCon | TOPCon | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | 450W-TD | 465W-TD | Difference | | --- | --- | --- | --- | | Module efficiency | 23.05 % | 23.81 % | +0.76 pp for 465W-TD | | Power density | 230.4 Wp/m² | 238.1 Wp/m² | +7.7 Wp/m² for 465W-TD | | Rated power | 450 Wp | 465 Wp | +15 W for 465W-TD | ## Every compared parameter | Parameter | 450W-TD | 465W-TD | | --- | --- | --- | | Rated power | 450 Wp | 465 Wp | | Module efficiency | 23.05 % | 23.81 % | | Power density | 230.4 Wp/m² | 238.1 Wp/m² | | Open-circuit voltage | 38.50 V | 39.00 V | | Voltage at max power | 32.90 V | 33.50 V | | Short-circuit current | 14.19 A | 14.46 A | | Current at max power | 13.68 A | 13.88 A | | Temperature coefficient | -0.300 %/°C | -0.300 %/°C | | Dimensions | 1722x1134x30 mm | 1722x1134x30 mm | | Module area | 1.953 m² | 1.953 m² | | Weight | 20.5 kg | 20.5 kg | | Weight per kWp | 45.6 kg/kWp | 44.1 kg/kWp | | Product warranty | 15 yrs | 15 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | 0.50 %/yr | 0.50 %/yr | | Cell technology | TOPCon | TOPCon | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 108 | 108 | | Bifacial | No | No | ## Thirty-year yield Each panel's own declared degradation curve, at 1,200 kWh/kWp a year Same temp coeff. for both panels (-0.300 %/°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, 450W-TD:** 14,864 kWh - **Cumulative output, 465W-TD:** 15,359 kWh - **Gap:** 495 kWh ## Output when hot | Condition | Cell temperature | 450W-TD | 465W-TD | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 450 W | 465 W | 100.0% of rated power | | Cool, bright day | 40 °C | 430 W | 444 W | 95.5% of rated power | | Typical summer roof | 55 °C | 410 W | 423 W | 91.0% of rated power | | Hot roof | 70 °C | 389 W | 402 W | 86.5% of rated power | ## Against the whole database | Measure | 450W-TD | 465W-TD | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #1,700 | #427 | 14,005 | 465W-TD leads by 1,273 places | | Power density | #1,708 | #453 | 14,005 | 465W-TD leads by 1,255 places | | Heat behaviour | #6,093 | #6,093 | 14,005 | Tied - the same position in the database | | Weight | #767 | #381 | 14,005 | 465W-TD leads by 386 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #7,596 | #6,015 | 14,005 | 465W-TD leads by 1,581 places | ## Questions ### Which panel is better: Just Solar JST-EDMH-450W-TD or Just Solar JST-EDMH-465W-TD? According to our database: **Just Solar JST-EDMH-**465 W**-TD** has higher module efficiency (**23.81%** vs **23.05%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Just Solar JST-EDMH-450W-TD and Just Solar JST-EDMH-465W-TD? **Just Solar JST-EDMH-**450 W**-TD** has a module efficiency of **23.05%**, while **Just Solar JST-EDMH-**465 W**-TD** is **23.81%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Just Solar JST-EDMH-450W-TD use vs Just Solar JST-EDMH-465W-TD? **Just Solar JST-EDMH-**450 W**-TD** uses **TOPCon** cells; **Just Solar JST-EDMH-**465 W**-TD** 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 Just Solar JST-EDMH-450W-TD and Just Solar JST-EDMH-465W-TD? **Just Solar JST-EDMH-**450 W**-TD** has a **30 years** power warranty; **Just Solar JST-EDMH-**465 W**-TD** 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. ## Related comparisons - [Just Solar JST-EDMH-450W-TD vs Just Solar JST-EDMH-(445-465)W-TD (465W class)](https://comparepv.com/compare/just-solar-jst-edmh-450w-td/just-solar-jst-edmh-445-465-w-td-465w-class) - 3 differences, the largest is module efficiency - [Just Solar JST-EDMH-450W-TD vs Just Solar JST-EDMH-(445-465)W-TD (460W class)](https://comparepv.com/compare/just-solar-jst-edmh-450w-td/just-solar-jst-edmh-445-465-w-td-460w-class) - 3 differences, the largest is module efficiency - [Just Solar JST-EDMH-450W-TD vs Just Solar JST-EDMH-460W-TD](https://comparepv.com/compare/just-solar-jst-edmh-450w-td/just-solar-jst-edmh-460w-td) - 3 differences, the largest is module efficiency - [Just Solar JST-EDMH-450W-TD vs Just Solar JST-EDMH-(445-465)W-TD (455W class)](https://comparepv.com/compare/just-solar-jst-edmh-450w-td/just-solar-jst-edmh-445-465-w-td-455w-class) - One difference: module efficiency - [Just Solar JST-EDMH-450W-TD vs Just Solar JST-EDMH-455W-TD](https://comparepv.com/compare/just-solar-jst-edmh-450w-td/just-solar-jst-edmh-455w-td) - One difference: module efficiency - [Just Solar JST-EDMH-450W-TD vs Just Solar JST-EDMH-(445-465)W-TD (450W class)](https://comparepv.com/compare/just-solar-jst-edmh-450w-td/just-solar-jst-edmh-445-465-w-td-450w-class) - The same specification on paper --- Source: https://comparepv.com/compare/just-solar-jst-edmh-450w-td/just-solar-jst-edmh-465w-td 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.