--- title: "BECSA BEC-HJT-700W-HD Solar Panel: Specs & Datasheet | ComparePV" description: "BECSA BEC-HJT-700W-HD solar panel. Specs: 22.50% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/becsa-bec-hjt-700w-hd" image: "https://comparepv.com/og/panel/becsa-bec-hjt-700w-hd.png" updated: 2026-10-09 --- # BECSA BEC-HJT-700W-HD Middle of its segment, modest efficiency 222 panels in the segment HJT 700-750 W ## Identity - **Manufacturer:** BECSA - **Model:** BEC-HJT-700W-HD - **Series:** BEC-HJT - **Rated power:** 700 W - **Cell technology:** HJT - **Bifacial:** yes ## How it compares Compared against segment HJT 700-750 W (222 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 700 W | 715 W | Weak - bottom 8% | | | Module efficiency | 22.50% | 23.02% | Weak - bottom 4% | 4,281 | | Power density | 225.3 | 230.2 | Weak - bottom 8% | 4,048 | | Temperature coefficient | -0.240 | -0.240 | Typical | 13 | | Weight (kg) | 37.5 kg | 38.3 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.50% | 23.02% | Weak - bottom 4% | 4,281 | | Power density | 225.3 | 230.2 | Weak - bottom 8% | 4,048 | | Temperature coefficient | -0.240 | -0.240 | Typical | 13 | | Weight per kWp | 53.6 | 53.6 | Typical | 7,655 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **22.50% module efficiency** - Bottom 4% of the HJT 700-750 W segment, against a median of 23.02%. Ranked 4,281st in the whole database. - **225.3 watts per square metre** - Bottom 8% of the HJT 700-750 W segment, against a median of 230.2. Ranked 4,048th in the whole database. - **Best for:** Utility-scale, commercial and hot-climate. - **Not ideal for:** Tight roof space and roofs where every square metre has to count. ## Specification ### Electrical - **Rated power (Pmax):** 700 W - **Efficiency:** 22.50 % - **Voltage at Pmax (Vmp):** 41.78 V - **Current at Pmax (Imp):** 16.77 A - **Open-circuit voltage (Voc):** 49.83 V - **Short-circuit current (Isc):** 17.82 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.240 %/degC - **Temperature coefficient of Voc:** -0.220 %/degC - **Temperature coefficient of Isc:** 0.047 %/degC - **NOCT:** 43 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** HJT - **Cell count:** 132 - **Bifacial:** yes - **Bifacial gain:** 10.00 ### Physical - **Length:** 2384 mm - **Width:** 1303 mm - **Thickness:** 33 mm - **Weight:** 37.5 kg - **Area:** 3.11 m2 - **Power density:** 225.3 Wp/m2 ### Warranty and degradation - **Product warranty:** 25 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 90.3 % - **First-year degradation:** 1.00 % - **Annual degradation:** 0.30 % - **Output after 30 years:** 632 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 4281 of 14129 | | Power density | 4048 of 14129 | | Temperature coefficient | 13 of 14129 | | Weight | 7655 of 14129 | | Warranty | 21 of 14129 | ## Pros - **Best-in-Class Temperature Coefficient** - HJT technology achieves a temperature coefficient of approximately -0.25%/°C, while competing TOPCon modules typically rate at -0.31%/°C. At a typical cell operating temperature of 45°C during a Central European summer, this translates to a real-world daily energy yield advantage of approximately 1-1.5% over TOPCon equivalents. - **22.2-23% Efficiency on Par with Segment Leaders** - The 23% peak efficiency matches comparable models such as the DAS Solar DAS-DH132NC (23%) and Becquer BEC-HJT (23%), with the New East Solar NESE 66THB-G12 leading the series by only 0.02 percentage points (23.02%). The series firmly holds a top-tier position within the 690-715 Wp segment. - **Up to 95% Bifaciality (Glass-Glass)** - The HJT glass-glass construction delivers a bifaciality factor of 90-95%, compared to the typical 80-90% of TOPCon modules. At a ground albedo of 20-30% (characteristic of light-colored rooftops or gravel), this yields an additional 6-10% energy gain from the rear surface. - **30-Year Linear Power Warranty** - The 30-year power output warranty exceeds the industry-standard 25 years offered by the majority of manufacturers in this segment (DAS Solar, New East Solar). It is complemented by a 25-year product warranty, reducing investment risk for long-term projects. - **Full PID and LID Immunity** - N-type HJT cells are inherently immune to both LID (Light Induced Degradation) and PID (Potential Induced Degradation). This eliminates the need for dedicated anti-PID devices in inverters, lowering overall system cost. ## Cons - **BECSA Not Listed on BNEF Tier-1 Ranking** - BECSA (the brand associated with Becquer, Singapore/India) does not appear on the official BloombergNEF Tier-1 list or the PVEL Scorecard, unlike established HJT suppliers such as Risen Energy or Huasun. For projects requiring bankability (project finance), this may complicate securing financing or insurance for the installation. - **HJT Price Premium vs. TOPCon** - HJT modules carry a market price premium of 10-25% over comparable TOPCon modules at similar efficiency levels (23%). For a typical residential 10 kWp system, the cost difference is estimated at PLN 1,500-3,500, extending the simple payback time (SPBT) by approximately 0.5-1 year relative to Tier-1 TOPCon solutions. ## About this series The BECSA BEC-HJT series represents the highest standard in **N-type Heterojunction (HJT) cell** technology, which redefines the efficiency of modern photovoltaic systems. A key differentiator of these modules is the unique combination of crystalline silicon with thin-film technology, allowing for **record energy conversion efficiency** even in low sunlight and on cloudy days. Thanks to exceptionally low temperature coefficients, these panels effectively solve the problem of power drops on hot days, generating significantly more kilowatt-hours annually than standard competitive solutions. The durable construction based on **double glass (Bifacial Glass-Glass)** guarantees not only full resistance to PID and LID degradation, but also allows for obtaining additional energy from rays reflected from the ground. The use of a symmetrical cell structure makes the modules exceptionally resistant to micro-cracks and mechanical stress, ensuring **maximum installation lifespan** exceeding thirty years. BECSA BEC-HJT is a premium class product dedicated to demanding investors for whom energy stability in extreme weather conditions and the fastest possible return on investment are priorities, placing this series at the forefront of the most cost-effective solutions on the Polish market. ## Notable figures - Module efficiency of 22.5% is 0.5pp below average for \*\*HJT 700-750W\*\* panels (median: 23.0%) - At 225.3 W/m², this panel generates 4.9 W/m² less per unit area than \*\*HJT 700-750W\*\* median (230.2 W/m²) - At -0.24%/°C, hot weather performance is typical for \*\*HJT 700-750W\*\* panels - Bifacial design (10% factor) captures reflected light - adds 0-2% yield on ground-mount or white roof - In the top 30% for efficiency among all HJT panels ## Questions ### How does the HJT technology used in the BECSA BEC-HJT series differ from the widely adopted TOPCon and PERC panels? HJT cells combine crystalline silicon with a thin amorphous silicon layer, delivering three concrete advantages over TOPCon and PERC: higher conversion efficiency (up to approximately 24-25%), a superior temperature coefficient (approximately -0.24%/°C versus -0.34%/°C for PERC), and an annual degradation rate of just 0.25-0.35%, roughly half that of PERC technology. In practice, this translates to 4-6% more energy output per year at the same nominal STC power rating. ### What warranty does the BECSA BEC-HJT series carry and what does it specifically cover? The BEC-HJT series comes with a 25-year product warranty covering material and manufacturing defects. In addition, the manufacturer provides a 30-year power output warranty, guaranteeing that the modules will maintain a specified performance level for three decades. This represents one of the longest warranty packages available on the Polish market and is a direct consequence of the inherently low degradation rate of HJT technology. ### Do the BECSA BEC-HJT 715W panels suffer significant power loss during summer heat? No - this is one of the key advantages of the series. Thanks to the exceptionally low temperature coefficient characteristic of HJT technology, the BEC-HJT modules lose significantly less power under intense sunlight than standard PERC panels. Under typical Polish summer conditions, this translates into a real-world gain of 4-6% more kilowatt-hours compared with first-generation panels of the same nominal power rating. ### What does the bifacial design of the BECSA BEC-HJT panels mean in practice, and is the premium worth paying? The Glass-Glass bifacial construction allows the module to harvest energy from both the front side and the rear side, capturing irradiance reflected from the ground, façades, or snow. The bifaciality factor of HJT cells reaches 85%, which - given an optimized installation (e.g., a lighter-colored ground surface or ground-mounted system with sufficient clearance) - yields 5-15% additional annual energy production. For installations with an optimal layout, this additional yield typically pays back the premium cost within a few years. ### Who is the BECSA BEC-HJT series designed for, and does it make sense for a small residential installation? The BEC-HJT is a premium-class product with power output up to 715 Wp, aimed at investors who face limited roof space, want to maximize energy yield, or are planning a system lifetime of at least 25-30 years. For a typical residential installation of 10-15 kWp, fewer panels are required compared with lower-output modules, which reduces balance-of-system (BoS) and installation costs. The higher per-panel unit cost is partially offset by the lower panel count and reduced costs of the remaining system components. ### Does the dual-glass (Glass-Glass) construction of the BECSA BEC-HJT panels make installation on a pitched roof more difficult? The Glass-Glass construction is somewhat heavier than standard backsheet modules, so it is advisable to verify the load-bearing capacity of the roof structure before installation. The installation process itself does not differ significantly from that of standard panels, and the rigid glass surface on both sides eliminates the risk of microcracks during handling on the roof. The manufacturer certifies mechanical load resistance appropriate for Polish climatic conditions, including snow and wind loads in accordance with applicable standards. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/becsa-hjtseries-solarmodule-datasheet-690-715w-september2025-1f63919366ef.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | -50 W, lighter, +2.7 pp | | [AIKO AIKO-A680-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a680-mde72mw) | 680 W | Hotter, lighter, +2.7 pp | | [AIKO AIKO-A675-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a675-mde72mw) | 675 W | -25 W, lighter, +2.5 pp | | [AIKO AIKO-A700-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a700-mae78dw) | 700 W | Hotter, lighter, +2.5 pp | | [WINAICO WST-675BKX72-A2](https://comparepv.com/panel/winaico-wst-675bkx72-a2) | 675 W | -25 W, lighter, +2.5 pp | | [AIKO AIKO-A695-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a695-mae78dw) | 695 W | Hotter, lighter, +2.4 pp | | [AIKO AIKO-G670-MCH72Mw](https://comparepv.com/panel/aiko-aiko-g670-mch72mw) | 670 W | -30 W, lighter, +2.3 pp | | [Longi Solar LR7-72HVHF-670M](https://comparepv.com/panel/longi-lr7-72hvhf-670m) | 670 W | -30 W, lighter, +2.3 pp | | [BECSA BEC-HJT-690W-HD](https://comparepv.com/panel/becsa-bec-hjt-690w-hd) | 690 W | -10 W, -0.3 pp | | [BECSA BEC-HJT-695W-HD](https://comparepv.com/panel/becsa-bec-hjt-695w-hd) | 695 W | Very close match | | [BECSA BEC-HJT-705W-HD](https://comparepv.com/panel/becsa-bec-hjt-705w-hd) | 705 W | Very close match | | [BECSA BEC-HJT-710W-HD](https://comparepv.com/panel/becsa-bec-hjt-710w-hd) | 710 W | +10 W, +0.4 pp | | [BECSA BEC-HJT-715W-HD](https://comparepv.com/panel/becsa-bec-hjt-715w-hd) | 715 W | +15 W, +0.5 pp | | [AIKO AIKO-A805-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a805-grh78dw) | 805 W | +105 W, heavier, +2.6 pp | | [AIKO AIKO-A800-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a800-grh78dw) | 800 W | +100 W, heavier, +2.4 pp | | [AIKO AIKO-A795-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a795-grh78dw) | 795 W | +95 W, heavier, +2.3 pp | --- Source: https://comparepv.com/panel/becsa-bec-hjt-700w-hd 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.