--- title: "TN Solar SE6-66HBD-695 vs TN Solar SE6-66HBD-705 - Solar Panel Comparison | ComparePV" description: "Compare TN Solar SE6-66HBD-695 vs TN Solar SE6-66HBD-705 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-695/tn-solar-se6-66hbd-705" updated: 2026-09-11 --- # TN Solar SE6-66HBD-695 vs TN Solar SE6-66HBD-705 705 leads on the differences that matter The largest is module efficiency: 0.33 pp more efficient. 16 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [TN Solar SE6-66HBD-695](https://comparepv.com/panel/tn-solar-se6-66hbd-695) | [TN Solar SE6-66HBD-705](https://comparepv.com/panel/tn-solar-se6-66hbd-705) | | Manufacturer | TN Solar | TN Solar | | Power | 695 Wp | 705 Wp | | Efficiency | 22.37 % | 22.70 % | | Technology | HJT | HJT | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | 695 | 705 | Difference | | --- | --- | --- | --- | | Module efficiency | 22.37 % | 22.70 % | +0.33 pp for 705 | | Power density | 223.7 Wp/m² | 227.0 Wp/m² | +3.2 Wp/m² for 705 | | Rated power | 695 Wp | 705 Wp | +10 W for 705 | ## Every compared parameter | Parameter | 695 | 705 | | --- | --- | --- | | Rated power | 695 Wp | 705 Wp | | Module efficiency | 22.37 % | 22.70 % | | Power density | 223.7 Wp/m² | 227.0 Wp/m² | | Open-circuit voltage | 49.98 V | 50.29 V | | Voltage at max power | 41.95 V | 42.25 V | | Short-circuit current | 17.37 A | 17.49 A | | Current at max power | 16.57 A | 16.69 A | | Temperature coefficient | -0.260 %/°C | -0.260 %/°C | | Dimensions | 2384x1303x35 mm | 2384x1303x35 mm | | Module area | 3.106 m² | 3.106 m² | | Weight | 38.7 kg | 38.7 kg | | Weight per kWp | 55.7 kg/kWp | 54.9 kg/kWp | | Product warranty | 25 yrs | 25 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | 0.38 %/yr | 0.38 %/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, 695:** 23,391 kWh - **Cumulative output, 705:** 23,728 kWh - **Gap:** 337 kWh ## Output when hot | Condition | Cell temperature | 695 | 705 | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 695 W | 705 W | 100.0% of rated power | | Cool, bright day | 40 °C | 668 W | 678 W | 96.1% of rated power | | Typical summer roof | 55 °C | 641 W | 650 W | 92.2% of rated power | | Hot roof | 70 °C | 614 W | 623 W | 88.3% of rated power | ## Against the whole database | Measure | 695 | 705 | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #4,970 | #3,307 | 14,005 | 705 leads by 1,663 places | | Power density | #4,877 | #3,361 | 14,005 | 705 leads by 1,516 places | | Heat behaviour | #511 | #511 | 14,005 | Tied - the same position in the database | | Weight | #10,084 | #9,275 | 14,005 | 705 leads by 809 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #290 | #173 | 14,005 | 705 leads by 117 places | ## Questions ### Which panel is better: TN Solar SE6-66HBD-695 or TN Solar SE6-66HBD-705? According to our database: **TN Solar SE6-66HBD-705** has higher module efficiency (**22.70%** vs **22.37%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of TN Solar SE6-66HBD-695 and TN Solar SE6-66HBD-705? **TN Solar SE6-66HBD-695** has a module efficiency of **22.37%**, while **TN Solar SE6-66HBD-705** is **22.70%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does TN Solar SE6-66HBD-695 use vs TN Solar SE6-66HBD-705? **TN Solar SE6-66HBD-695** uses **HJT** cells; **TN Solar SE6-66HBD-705** 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 TN Solar SE6-66HBD-695 and TN Solar SE6-66HBD-705? **TN Solar SE6-66HBD-695** has a **30 years** power warranty; **TN Solar SE6-66HBD-705** 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-695 and TN Solar SE6-66HBD-705 bifacial panels? Both **TN Solar SE6-66HBD-695** and **TN Solar SE6-66HBD-705** 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 - [TN Solar SE6-66HBD-695 vs TN Solar SE6-66HBD-715](https://comparepv.com/compare/tn-solar-se6-66hbd-695/tn-solar-se6-66hbd-715) - 3 differences, the largest is module efficiency - [TN Solar SE6-66HBD-695 vs TN Solar SE6-66HBD-710](https://comparepv.com/compare/tn-solar-se6-66hbd-695/tn-solar-se6-66hbd-710) - 3 differences, the largest is module efficiency - [TN Solar SE6-66HBD-695 vs TN Solar SE6-66HBD-700](https://comparepv.com/compare/tn-solar-se6-66hbd-695/tn-solar-se6-66hbd-700) - The same specification on paper - [TN Solar SE6-66HBD-695 vs TN Solar TN5-54H-390](https://comparepv.com/compare/tn-solar-se6-66hbd-695/tn-solar-tn5-54h-390) - 14 differences, the largest is module efficiency - [TN Solar SE6-66HBD-695 vs TN Solar TN5-54H-385](https://comparepv.com/compare/tn-solar-se6-66hbd-695/tn-solar-tn5-54h-385) - 14 differences, the largest is module efficiency - [TN Solar SE6-66HBD-695 vs TN Solar TN5-54H-380](https://comparepv.com/compare/tn-solar-se6-66hbd-695/tn-solar-tn5-54h-380) - 14 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/tn-solar-se6-66hbd-695/tn-solar-se6-66hbd-705 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.