--- title: "TN Solar SE6-66HBD-715 vs TN Solar TN5-54H-370 - Solar Panel Comparison | ComparePV" description: "Compare TN Solar SE6-66HBD-715 vs TN Solar TN5-54H-370 side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/tn-solar-se6-66hbd-715/tn-solar-tn5-54h-370" updated: 2026-09-11 --- # TN Solar SE6-66HBD-715 vs TN Solar TN5-54H-370 SE6-66HBD-715 leads on the differences that matter The largest is module efficiency: 4.05 pp more efficient. 4 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [TN Solar SE6-66HBD-715](https://comparepv.com/panel/tn-solar-se6-66hbd-715) | [TN Solar TN5-54H-370](https://comparepv.com/panel/tn-solar-tn5-54h-370) | | Manufacturer | TN Solar | TN Solar | | Power | 715 Wp | 370 Wp | | Efficiency | 23.02 % | 18.97 % | | Technology | HJT | TOPCon | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | SE6-66HBD-715 | TN5-54H-370 | Difference | | --- | --- | --- | --- | | Module efficiency | 23.02 % | 18.97 % | +4.05 pp for SE6-66HBD-715 | | Temperature coefficient | -0.260 %/°C | -0.300 %/°C | +0.040 %/°C for SE6-66HBD-715 | | Rated power | 715 Wp | 370 Wp | +345 W for SE6-66HBD-715 | | Power density | 230.2 Wp/m² | 189.5 Wp/m² | +40.7 Wp/m² for SE6-66HBD-715 | | Weight | 38.7 kg | 21.0 kg | -17.7 kg for TN5-54H-370 | | Open-circuit voltage | 50.59 V | 38.58 V | 12.01 V apart | | Short-circuit current | 17.61 A | 11.95 A | 5.66 A apart | | Module area | 3.106 m² | 1.953 m² | 1.154 m² apart | | Cell technology | HJT | TOPCon | HJT vs TOPCon | | Voltage at max power | 42.54 V | 32.41 V | 10.13 V apart | | Current at max power | 16.81 A | 11.42 A | 5.39 A apart | | Cell count | 132 | 108 | 24 cells apart | | Weight per kWp | 54.1 kg/kWp | 56.8 kg/kWp | -2.6 kg/kWp for SE6-66HBD-715 | | Bifacial | Yes | No | Yes vs No | | Dimensions | 2384x1303x35 mm | 1722x1134x30 mm | 2384x1303x35 mm vs 1722x1134x30 mm | ## Every compared parameter | Parameter | SE6-66HBD-715 | TN5-54H-370 | | --- | --- | --- | | Rated power | 715 Wp | 370 Wp | | Module efficiency | 23.02 % | 18.97 % | | Power density | 230.2 Wp/m² | 189.5 Wp/m² | | Open-circuit voltage | 50.59 V | 38.58 V | | Voltage at max power | 42.54 V | 32.41 V | | Short-circuit current | 17.61 A | 11.95 A | | Current at max power | 16.81 A | 11.42 A | | Temperature coefficient | -0.260 %/°C | -0.300 %/°C | | Dimensions | 2384x1303x35 mm | 1722x1134x30 mm | | Module area | 3.106 m² | 1.953 m² | | Weight | 38.7 kg | 21.0 kg | | Weight per kWp | 54.1 kg/kWp | 56.8 kg/kWp | | Product warranty | 25 yrs | 25 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | 0.38 %/yr | 0.40 %/yr | | Cell technology | HJT | TOPCon | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 132 | 108 | | Bifacial | Yes | No | ## Thirty-year yield Each panel's own declared degradation curve, at 1,200 kWh/kWp a year - **Cumulative output, SE6-66HBD-715:** 24,064 kWh - **Cumulative output, TN5-54H-370:** 12,414 kWh - **Gap:** 11,650 kWh ## Output when hot | Condition | Cell temperature | SE6-66HBD-715 | TN5-54H-370 | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 715 W | 370 W | 100.0% of rated power | | Cool, bright day | 40 °C | 687 W | 353 W | 95.5% of rated power | | Typical summer roof | 55 °C | 659 W | 337 W | 91.0% of rated power | | Hot roof | 70 °C | 631 W | 320 W | 86.5% of rated power | ## Against the whole database | Measure | SE6-66HBD-715 | TN5-54H-370 | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #1,797 | #12,976 | 14,005 | SE6-66HBD-715 leads by 11,179 places | | Power density | #2,018 | #12,968 | 14,005 | SE6-66HBD-715 leads by 10,950 places | | Heat behaviour | #511 | #6,093 | 14,005 | SE6-66HBD-715 leads by 5,582 places | | Weight | #8,339 | #10,847 | 14,005 | SE6-66HBD-715 leads by 2,508 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #112 | #11,685 | 14,005 | SE6-66HBD-715 leads by 11,573 places | ## Questions ### Which panel is better: TN Solar SE6-66HBD-715 or TN Solar TN5-54H-370? According to our database: **TN Solar SE6-66HBD-715** has higher module efficiency (**23.02%** vs **18.97%**); **TN Solar SE6-66HBD-715** tolerates heat better (temp coeff **-0.260%/°C** vs **-0.300%/°C**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of TN Solar SE6-66HBD-715 and TN Solar TN5-54H-370? **TN Solar SE6-66HBD-715** has a module efficiency of **23.02%**, while **TN Solar TN5-54H-370** is **18.97%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does TN Solar SE6-66HBD-715 use vs TN Solar TN5-54H-370? **TN Solar SE6-66HBD-715** uses **HJT** cells; **TN Solar TN5-54H-370** 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 TN Solar SE6-66HBD-715 and TN Solar TN5-54H-370? **TN Solar SE6-66HBD-715** has a **30 years** power warranty; **TN Solar TN5-54H-370** 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 TN Solar SE6-66HBD-715 and TN Solar TN5-54H-370 bifacial panels? **TN Solar SE6-66HBD-715** is bifacial (captures light from both faces); **TN Solar TN5-54H-370** is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath. ## Related comparisons - [TN Solar SE6-66HBD-715 vs TN Solar SE6-66HBD-710](https://comparepv.com/compare/tn-solar-se6-66hbd-715/tn-solar-se6-66hbd-710) - The same specification on paper - [TN Solar SE6-66HBD-715 vs TN Solar SE6-66HBD-705](https://comparepv.com/compare/tn-solar-se6-66hbd-715/tn-solar-se6-66hbd-705) - 3 differences, the largest is module efficiency - [TN Solar SE6-66HBD-715 vs TN Solar SE6-66HBD-700](https://comparepv.com/compare/tn-solar-se6-66hbd-715/tn-solar-se6-66hbd-700) - 3 differences, the largest is module efficiency - [TN Solar SE6-66HBD-715 vs TN Solar SE6-66HBD-695](https://comparepv.com/compare/tn-solar-se6-66hbd-715/tn-solar-se6-66hbd-695) - 3 differences, the largest is module efficiency - [TN Solar TN5-54H-370 vs TN Solar TN5-54H-390](https://comparepv.com/compare/tn-solar-tn5-54h-370/tn-solar-tn5-54h-390) - 5 differences, the largest is module efficiency - [TN Solar TN5-54H-370 vs TN Solar TN5-54H-385](https://comparepv.com/compare/tn-solar-tn5-54h-370/tn-solar-tn5-54h-385) - 4 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/tn-solar-se6-66hbd-715/tn-solar-tn5-54h-370 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.