--- title: "TN Solar SE6-66HBD-695 695W Solar Panel - Specs & Review | ComparePV" description: "TN Solar SE6-66HBD-695 695W solar panel. Specs: 22.37% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/tn-solar-se6-66hbd-695" updated: 2026-09-11 --- # TN Solar SE6-66HBD-695 Space saver, weak in heat 61 panels in the segment HJT 650-700 W ## Identity - **Manufacturer:** TN Solar - **Model:** SE6-66HBD-695 - **Series:** SE6-66HBD - **Rated power:** 695 W - **Cell technology:** HJT - **Bifacial:** yes ## How it compares Compared against segment HJT 650-700 W (61 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 695 W | 690 W | Strong - top 15% | | | Module efficiency | 22.37% | 22.20% | Typical | 4,970 | | Power density | 223.7 | 222.1 | Strong - top 16% | 4,877 | | Temperature coefficient | -0.260 | -0.240 | Weak - bottom 24% | 511 | | Weight (kg) | 38.7 kg | 38.5 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.37% | 22.20% | Typical | 4,970 | | Power density | 223.7 | 222.1 | Strong - top 16% | 4,877 | | Temperature coefficient | -0.260 | -0.240 | Weak - bottom 24% | 511 | | Weight per kWp | 55.7 | 55.7 | Typical | 10,084 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **223.7 watts per square metre** - Top 16% of the HJT 650-700 W segment, against a median of 222.1. ### Watch out for - **-0.260 %/°C temperature coefficient** - Bottom 24% of the HJT 650-700 W segment, against a median of -0.240. - **Best for:** Commercial, utility-scale and hot-climate. - **Not ideal for:** Hot climates. ## Specification ### Electrical - **Rated power (Pmax):** 695 W - **Efficiency:** 22.37 % - **Voltage at Pmax (Vmp):** 41.95 V - **Current at Pmax (Imp):** 16.57 A - **Open-circuit voltage (Voc):** 49.98 V - **Short-circuit current (Isc):** 17.37 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.260 %/degC - **Temperature coefficient of Voc:** -0.240 %/degC - **Temperature coefficient of Isc:** 0.040 %/degC - **NOCT:** 44 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** HJT - **Cell count:** 132 - **Bifacial:** yes - **Bifacial gain:** 90.00 ### Physical - **Length:** 2384 mm - **Width:** 1303 mm - **Thickness:** 35 mm - **Weight:** 38.7 kg - **Area:** 3.11 m2 - **Power density:** 223.7 Wp/m2 ### Warranty and degradation - **Product warranty:** 25 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 88.0 % - **First-year degradation:** 1.00 % - **Annual degradation:** 0.38 % - **Output after 30 years:** 611 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 4970 of 14005 | | Power density | 4877 of 14005 | | Temperature coefficient | 511 of 14005 | | Weight | 10084 of 14005 | | Warranty | 21 of 14005 | ## About this series The TN Solar SE6-66HBD series is designed for installations where maximizing energy yield per square meter is the priority. These are **bifacial** modules that can utilize reflected light from the ground, significantly increasing power generation compared to traditional monofacial panels. The **HJT** technology ensures stable performance under a wide range of conditions and helps minimize losses at high temperatures, which is particularly important for roofs of warehouses and high-density solar farms. The **glass-glass** construction improves mechanical strength and long-term durability, which is crucial under wind and snow loads. The series also features **long warranties** and a focus on maintaining high efficiency over time, making it easier to plan the return on investment. The SE6-66HBD is a good choice for PV farms, carports, and large commercial rooftops, where the combination of bifaciality, HJT technology, and robust construction provides a significant advantage. ## Notable figures - Efficiency of 22.4% matches the \*\*HJT 650-700W\*\* median - At 223.7 W/m² power density, roof space requirements are typical for \*\*HJT 650-700W\*\* panels - Temperature coefficient of -0.26%/°C is 0.02pp worse than \*\*HJT 650-700W\*\* median (-0.24%/°C) - higher losses in summer heat - Bifaciality factor of 85% can add 4-13% extra yield with reflective mounting surface - Ranked #4970 out of 14005 panels for efficiency in the database ## Questions ### How does HJT cell technology in TN Solar SE6-66HBD panels differ from classic PERC cells? HJT (heterojunction) cells combine crystalline silicon with layers of amorphous silicon, delivering higher efficiency and lower power loss at high temperatures compared to classic PERC cells. This allows SE6-66HBD panels to perform better in summer on hall roofs and solar farms where modules heat up significantly. HJT also has a lower temperature coefficient, resulting in higher real annual energy yield. ### Does the bifacial design of SE6-66HBD panels actually increase energy production? Yes, the rear side of the module captures light reflected from the ground, roof, or light-colored surfaces, providing several to over a dozen percent extra energy compared to a monofacial panel. The effect is strongest when mounted above light gravel, a white roofing membrane, or on ground-mounted structures with increased clearance. On typical pitched roofs, the gain is smaller but still noticeable. ### What warranty comes with TN Solar SE6-66HBD panels? The manufacturer provides a 25-year product warranty and a 30-year power output warranty. This means TN Solar commits to maintaining adequate module performance over three decades of operation, helping investors plan the payback period of their PV installation and estimate long-term project profitability. ### What is the maximum power of the SE6-66HBD panel and what installations is it suited for? The module reaches up to 715 Wp of maximum power, placing it in the high-power segment designed mainly for large commercial installations, solar farms, and carports. High unit power reduces the number of modules needed to reach a target system capacity, lowering costs for mounting structures and cabling across large areas. ### Does the glass-glass construction of the SE6-66HBD improve durability and damage resistance? Yes, the glass-glass design replaces the standard plastic backsheet with a second layer of tempered glass, significantly increasing rigidity and mechanical resistance. This construction handles snow and wind loads better and reduces the risk of microcracks and degradation over time, resulting in longer module lifespan under demanding operating conditions. ### Are TN Solar SE6-66HBD panels a good choice for ground-mounted installations or solar farms? Yes, thanks to the combination of high power up to 715 Wp, bifacial technology, and glass-glass construction, the SE6-66HBD series performs especially well on solar farms and large ground-mounted installations, where the rear side of the module can effectively use light reflected from the ground. The robust build also handles the weather conditions typical of open terrain well. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/TN-6N-N-type-HJT-132-Half-Cells-695-715W-515f18ea1f1d.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | -45 W, lighter, +2.8 pp | | [AIKO AIKO-A680-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a680-mde72mw) | 680 W | -15 W, lighter, +2.8 pp | | [AIKO AIKO-A675-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a675-mde72mw) | 675 W | -20 W, lighter, +2.6 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | -50 W, lighter, +2.6 pp | | [AIKO AIKO-A700-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a700-mae78dw) | 700 W | Lighter, +2.6 pp | | [AIKO AIKO-A695-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a695-mae78dw) | 695 W | Lighter, +2.5 pp | | [AIKO AIKO-G670-MCH72Mw](https://comparepv.com/panel/aiko-aiko-g670-mch72mw) | 670 W | -25 W, lighter, +2.4 pp | | [TN Solar SE6-66HBD-700](https://comparepv.com/panel/tn-solar-se6-66hbd-700) | 700 W | Very close match | | [TN Solar SE6-66HBD-705](https://comparepv.com/panel/tn-solar-se6-66hbd-705) | 705 W | +10 W, +0.3 pp | | [TN Solar SE6-66HBD-710](https://comparepv.com/panel/tn-solar-se6-66hbd-710) | 710 W | +15 W, +0.5 pp | | [TN Solar SE6-66HBD-715](https://comparepv.com/panel/tn-solar-se6-66hbd-715) | 715 W | +20 W, +0.6 pp | | [AIKO AIKO-A805-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a805-grh78dw) | 805 W | +110 W, heavier, +2.7 pp | | [AIKO AIKO-A800-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a800-grh78dw) | 800 W | +105 W, heavier, +2.5 pp | | [AIKO AIKO-A795-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a795-grh78dw) | 795 W | +100 W, heavier, +2.4 pp | | [AIKO AIKO-A790-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a790-grh78dw) | 790 W | +95 W, heavier, +2.2 pp | | [Trina Solar TSM-NEG21C.20Q-760](https://comparepv.com/panel/trina-solar-tsm-neg21c-20q-760) | 760 W | +65 W, +2.1 pp | --- Source: https://comparepv.com/panel/tn-solar-se6-66hbd-695 Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.