Description
Devsol 740W HDT Solar Panel — Advanced HJT Bifacial Module
The Devsol 740 Watt HDT Solar Panel is a high-output, N-Type bifacial solar module manufactured by Nexus Solar Energy Pvt Ltd under the Devsol brand. Featuring HDT as the stated product technology identity and Advanced HJT positioning, this 740W glass-glass solar panel delivers 23.8% module efficiency with a robust dual-glass construction designed for residential, commercial, industrial and large-scale solar projects across India.
HDT is the stated product technology identity. The module is positioned using Advanced HJT technology/search terminology and uses an N-Type heterojunction cell platform. Engineering and purchasing decisions should rely on the model-specific electrical, mechanical and bifacial specifications rather than treating HDT and HJT as interchangeable terms. HJT (Heterojunction Technology) combines crystalline silicon with amorphous silicon layers in an N-Type cell structure.
The Devsol 740W HDT module uses 132 N-Type HJT cells in a 6×11 + 6×11 half-cut configuration, delivering a rated maximum power of 740 Wp at Standard Test Conditions. Its open-circuit voltage (Voc) is 50.47V, short-circuit current (Isc) is 18.56A, maximum power voltage (Vmpp) is 42.32V and maximum power current (Impp) is 17.50A.
740W HDT Solar Panel Key Features
- 740W rated front-side power output for high-output rooftop and project installations
- 23.8% module efficiency at Standard Test Conditions (STC)
- N-Type heterojunction cell platform with Advanced HJT positioning
- Bifacial glass-glass design with 90±5% bifacial factor for dual-side energy generation
- 132-cell half-cut configuration (6×11 + 6×11) for reduced internal losses
- Low temperature coefficient of Pmax: -0.24%/°C for better performance in Indian heat
- 0 to +3% positive power tolerance — guaranteed minimum rated output
- 1500V DC maximum system voltage for large-scale string configurations
- IP68 junction box with 3 Schottky bypass diodes for enhanced safety
- 5400 Pa front / 2400 Pa rear mechanical load rating for demanding installation environments
- Glass-glass construction with 2.0mm front AR-coated and 2.0mm rear heat-strengthened glass
- 15-year product warranty, subject to applicable warranty terms; 35-year linear performance warranty, subject to applicable Nexus/Devsol warranty terms and conditions.
Devsol 740 Watt HDT Technical Specifications
| Specification | Devsol 740W HDT |
|---|---|
| Rated Maximum Power (Pmax) | 740 Wp |
| Module Efficiency | 23.8% |
| Open Circuit Voltage (Voc) | 50.47 V |
| Short Circuit Current (Isc) | 18.56 A |
| Maximum Power Voltage (Vmpp) | 42.32 V |
| Maximum Power Current (Impp) | 17.50 A |
| Power Tolerance | 0 to +3% |
| Cell Technology | N-Type HJT (HDT) |
| Cell Configuration | 132 cells (6×11 + 6×11) |
| Bifacial Factor | 90±5% |
| Module Dimensions | 2384 × 1303 × 33 mm |
| Weight | 37.5 kg |
| Front Glass | 2.0 mm High-Transmission AR-Coated Heat-Strengthened Glass |
| Rear Glass | 2.0 mm Heat-Strengthened Glass |
| Frame | Anodized Aluminium Alloy |
| Junction Box | IP68, 1500V DC, 3 Schottky Bypass Diodes |
| Cable | 4.0 mm² |
| Maximum Mechanical Test Load | 5400 Pa front / 2400 Pa rear |
| NMOT | 43°C ± 2°C |
| Temperature Coefficient Voc | -0.22%/°C |
| Temperature Coefficient Isc | +0.047%/°C |
| Temperature Coefficient Pmax | -0.24%/°C |
| Operating Temperature | -40°C to +85°C |
| Maximum System Voltage | 1500 V DC |
| Maximum Series Fuse | 35 A |
| Limiting Reverse Current | 35 A |
Why Advanced HJT Technology Matters in Indian Conditions
India’s climate presents a specific challenge for solar panels. During peak summer months, rooftop temperatures regularly exceed 50°C, and the silicon cells inside a solar module operate at even higher temperatures. Every solar panel loses output as it gets hotter — this is measured by the temperature coefficient of Pmax.
The Devsol 740W HDT panel has a temperature coefficient of Pmax at -0.24%/°C. This means for every 1°C rise in cell temperature above 25°C (the standard test condition), the panel loses approximately 0.24% of its rated power. In practical terms, this is a lower rate of heat-related power loss compared to many conventional panels, which is particularly relevant during Indian summers when electricity consumption and tariff rates are at their highest.
The module uses an N-Type heterojunction cell platform. For project planning, use the published model-specific temperature coefficient and other electrical values; do not infer additional yield or degradation guarantees beyond the applicable Nexus/Devsol warranty terms.
Bifacial Glass-Glass Solar Panel
The Devsol 740W HDT is a bifacial glass-glass solar panel, meaning it is designed to capture sunlight from both the front and rear surfaces. The front surface receives direct sunlight, while the rear surface captures reflected and diffuse light from the surface beneath the panel.
The datasheet specifies a bifacial factor of 90±5%, which represents the ratio of rear-side to front-side power under standard test conditions. However, the actual rear-side energy gain in a real installation depends on several factors:
- Mounting height — the distance between the panel rear surface and the roof or ground
- Tilt angle — the orientation of the panel relative to the ground
- Surface reflectivity (albedo) — light-coloured concrete or white membrane roofs provide the highest reflectivity
- Installation structure — the mounting system should not shade the rear surface excessively
- Site conditions — surrounding structures, vegetation and ground colour all affect rear irradiance
The 2.0mm front AR-coated heat-strengthened glass and 2.0mm rear heat-strengthened glass create a dual-glass module intended for durable project installations. Final suitability depends on the mounting design, handling and site conditions.
740W HDT Solar Panel for Commercial and Industrial Projects
With a rated output of 740 watts from a single module measuring 2384 × 1303 mm, the Devsol 740W HDT panel is designed for applications where high power density from limited roof or ground area is important:
- Industrial rooftop solar installations — factories, warehouses and large commercial buildings with significant electricity consumption
- Commercial rooftop projects — offices, shopping centres, hotels and institutional buildings
- EPC (Engineering, Procurement and Construction) projects — large-scale solar plant development
- Open ground-mount solar arrays — where ample area allows optimal tilt and rear-side irradiance
- High power-density projects — installations where maximum output per square metre is required
The 1500V DC maximum system voltage allows longer string configurations, reducing wiring costs and inverter input requirements for large installations. The IP68 junction box and 5400 Pa / 2400 Pa mechanical load ratings provide the durability required for commercial and industrial environments.
Note: For residential installations, the physical dimensions (2384 × 1303 mm) and weight (37.5 kg) of the 740W module should be evaluated against available roof space, structural capacity and handling requirements. A professional site assessment is recommended before selecting this wattage class for any installation.
HDT vs Conventional Solar Panel
The verified Devsol 740W values are shown below. Specifications for alternative P-Type Mono PERC panels vary by model and should be checked against the relevant manufacturer datasheet.
| Feature | Devsol 740W HDT (N-Type HJT) | Conventional P-Type Mono PERC |
|---|---|---|
| Cell Technology | N-Type Heterojunction (HJT) | P-Type Mono PERC |
| Temperature Coefficient (Pmax) | -0.24%/°C | Varies by model; check the relevant datasheet |
| Bifacial Capability | Yes, glass-glass bifacial | Varies by model |
| Performance Warranty | 35-year linear performance warranty, subject to applicable Nexus/Devsol warranty terms and conditions | Varies by manufacturer and model |
| Construction | Glass-glass | Varies by model |
Use the Devsol 740W model-specific -0.24%/°C temperature coefficient for project calculations and compare it directly with the published datasheet value of any alternative panel.
Certification and Manufacturing
| Brand | Devsol |
| Manufacturer | Nexus Solar Energy Pvt Ltd |
| BIS Licence No. | R-93046086 |
| Primary Standard | IS 14286 (Part 1/Sec 1):2023 |
| Additional Standards | IEC 61215-1-1:2021, IS/IEC 61730-1 & 61730-2:2023 |
| Category | Crystalline Silicon Terrestrial Photovoltaic (PV) Modules |
| Licence Holder | Nexus Solar Energy Pvt Ltd, Bulandshahr, Uttar Pradesh |
| Manufacturing Facility | G.T. Road, Chola Industrial Area, Shahpur Kalan, Bulandshahr, UP – 203202 |
This 740W model is covered as Nex-740-IN0825 under BIS Licence R-93046086, operative from 29 April 2026 and valid up to 28 April 2028. The certificate covers this model under IS 14286 (Part 1/Sec 1):2023 / IEC 61215-1-1:2021 and IS/IEC 61730-1:2023 and IS/IEC 61730-2:2023.
Which Devsol Panel Fits the Project?
Devsol 740W HDT
- 740 Wp
- HDT; Advanced HJT positioning
- Bifacial glass-glass
- High-capacity project option
Devsol 730Wp HDT
- 730 Wp
- HDT; Advanced HJT positioning
- Bifacial
- Alternative high-output module
Devsol 630W TOPCon
- 630 W
- N-Type TOPCon
- Bifacial glass-glass
- Different cell-platform/lower-wattage option
For system planning, review compatible hybrid inverter options or contact Nexus Solar Energy.
See the Devsol 740W HDT Panel Explained
For a broader technology comparison, watch TOPCon vs HJT vs HDT live test.
Request a project or bulk quote | Find a Nexus dealer
Frequently Asked Questions About Devsol 740 Watt HDT Solar Panel
What is the Devsol 740 Watt HDT Solar Panel?
The Devsol 740W HDT Solar Panel is a high-output N-Type bifacial module manufactured by Nexus Solar Energy Pvt Ltd. HDT is its stated product technology identity; the module is positioned using Advanced HJT terminology and uses an N-Type heterojunction cell platform. It delivers 740W rated power with 23.8% module efficiency in a glass-glass bifacial construction.
What is HDT solar panel technology?
HDT is the stated product technology identity. The module is positioned using Advanced HJT technology/search terminology and uses an N-Type heterojunction cell platform. Engineering and purchasing decisions should rely on the model-specific electrical, mechanical and bifacial specifications.
Is HDT the same as HJT?
No. HDT is the stated product technology identity, while HJT is the N-Type heterojunction cell platform/search terminology used for positioning this module. Engineering and purchasing decisions should rely on the model-specific electrical, mechanical and bifacial specifications rather than treating HDT and HJT as interchangeable terms.
What is the efficiency of the Devsol 740W HDT panel?
The Devsol 740W HDT panel has a module efficiency of 23.8% at Standard Test Conditions (STC).
Is the Devsol 740 Watt HDT panel bifacial?
Yes. The Devsol 740W HDT is a bifacial glass-glass solar panel with a specified bifacial factor of 90±5%. It is designed to capture solar energy from both front and rear surfaces, with actual rear-side gain depending on installation conditions such as mounting height, surface reflectivity and tilt angle.
What is the voltage of the 740W solar panel?
At STC, the Devsol 740W HDT panel has an open-circuit voltage (Voc) of 50.47V and a maximum power voltage (Vmpp) of 42.32V.
What is the current of the 740W solar panel?
At STC, the Devsol 740W HDT panel has a short-circuit current (Isc) of 18.56A and a maximum power current (Impp) of 17.50A.
What is the size of the Devsol 740W solar panel?
The Devsol 740W HDT panel measures 2384 × 1303 × 33 mm and weighs 37.5 kg.
What is the weight of the Devsol 740W solar panel?
The Devsol 740W HDT panel weighs 37.5 kg.
Is the Devsol 740W HDT panel BIS registered?
Yes. This 740W model is covered as Nex-740-IN0825 under BIS Licence R-93046086, operative from 29 April 2026 and valid up to 28 April 2028.
Who manufactures the Devsol 740 Watt HDT Solar Panel?
The Devsol 740 Watt HDT Solar Panel is manufactured by Nexus Solar Energy Pvt Ltd, based in Bulandshahr, Uttar Pradesh, India.
Is the 740W HDT panel suitable for commercial solar projects?
Yes. The Devsol 740W HDT panel is designed for commercial rooftops, industrial rooftop installations, EPC projects and large-scale solar plants where high power density from limited area is required. The 1500V DC system voltage supports large string configurations suitable for commercial-scale inverters.
What is the maximum system voltage of the Devsol 740W HDT panel?
The Devsol 740W HDT panel is rated for a maximum system voltage of 1500V DC.
What is the temperature coefficient of Pmax?
The temperature coefficient of Pmax for the Devsol 740W HDT panel is -0.24%/°C. This means the panel loses approximately 0.24% of its rated power for every 1°C increase in cell temperature above 25°C.
What warranty does the Devsol 740W HDT panel carry?
15-year product warranty, subject to applicable warranty terms. 35-year linear performance warranty, subject to applicable Nexus/Devsol warranty terms and conditions.
How does the Devsol 740W HDT panel compare to conventional solar panels?
The Devsol 740W HDT panel uses an N-Type heterojunction cell platform, has a published -0.24%/°C Pmax temperature coefficient and uses bifacial glass-glass construction. Compare these model-specific values with the current datasheet and warranty terms of any alternative panel.
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