--- title: "Vikram Solar HYPERSOL VSMDH.66.635.05 635W Solar Panel - Specs & Review | ComparePV" description: "Vikram Solar HYPERSOL VSMDH.66.635.05 635W solar panel. Specs: 23.51% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/vikram-solar-hypersol-vsmdh-66-635-05" updated: 2026-09-11 --- # Vikram Solar HYPERSOL VSMDH.66.635.05 Efficiency leader, no clear weak spot 359 panels in the segment N-type 600-650 W ## Identity - **Manufacturer:** Vikram Solar - **Model:** HYPERSOL VSMDH.66.635.05 - **Series:** HYPERSOL - **Rated power:** 635 W - **Cell technology:** N-type - **Bifacial:** yes ## How it compares Compared against segment N-type 600-650 W (359 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 635 W | 625 W | Strong - top 22% | | | Module efficiency | 23.51% | 22.77% | Strong - top 10% | 696 | | Power density | 235.1 | 227.7 | Strong - top 12% | 741 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight (kg) | 32.1 kg | 32.5 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 23.51% | 22.77% | Strong - top 10% | 696 | | Power density | 235.1 | 227.7 | Strong - top 12% | 741 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight per kWp | 50.6 | 52.7 | Typical | 3,943 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **23.51% module efficiency** - Top 10% of the N-type 600-650 W segment, against a median of 22.77%. Ranked 696th in the whole database. - **235.1 watts per square metre** - Top 12% of the N-type 600-650 W segment, against a median of 227.7. - **Best for:** Utility-scale, commercial, hot-climate and shaded-installations. ## Specification ### Electrical - **Rated power (Pmax):** 635 W - **Efficiency:** 23.51 % - **Voltage at Pmax (Vmp):** 41.80 V - **Current at Pmax (Imp):** 15.20 A - **Open-circuit voltage (Voc):** 49.70 V - **Short-circuit current (Isc):** 16.11 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.290 %/degC - **Temperature coefficient of Voc:** -0.240 %/degC - **Temperature coefficient of Isc:** 0.040 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** N-type - **Cell count:** 132 - **Bifacial:** yes ### Physical - **Length:** 2382 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 32.1 kg - **Area:** 2.70 m2 - **Power density:** 235.1 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 87.4 % - **First-year degradation:** 1.00 % - **Annual degradation:** 0.40 % - **Output after 30 years:** 555 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 696 of 14005 | | Power density | 741 of 14005 | | Temperature coefficient | 2165 of 14005 | | Weight | 3943 of 14005 | | Warranty | 21 of 14005 | ## About this series The HYPERSOL G12R series from Vikram Solar is a lineup of bifacial photovoltaic modules built on N-type TOPCon technology, addressing the growing demand from investors for higher energy yields on limited roof or ground space. The panels feature **half-cut cells** mounted on a rectangular G12R wafer, combined with a **16 busbar** layout that reduces resistive losses and improves current distribution across the module. A defining trait of the series is its **high bifaciality**, allowing the module to capture additional energy reflected off the ground surface, which translates into a lower levelized cost of energy (LCOE) over the system's lifetime. The manufacturer also highlights **stable performance under high temperatures**, making this series an attractive option for installations in warmer climates or sites exposed to intense summer irradiance. Optimized use of shipping container space helps cut logistics costs, while the materials used align with the industry's push toward recyclability and sustainability. HYPERSOL G12R is primarily aimed at utility-scale, commercial, and industrial projects where predictable, long-term performance and lower operating costs throughout the system's service life are the priority. ## Notable figures - Efficiency of 23.5% is 0.7pp above the \*\*N-type 600-650W\*\* median (22.8%) - 235.1 W/m² power density - 7.4 W/m² more than \*\*N-type 600-650W\*\* median (227.7 W/m²), more power per roof area - At -0.29%/°C, hot weather performance is typical for \*\*N-type 600-650W\*\* panels - Bifacial design (75% factor) captures reflected light - adds 4-11% yield on ground-mount or white roof - #696 for efficiency, #2165 for temperature performance out of 14005 panels ## Questions ### What is N-type TOPCon technology in the HYPERSOL G12R panels, and does it actually deliver higher energy yield? TOPCon (Tunnel Oxide Passivated Contact) is an N-type cell technology that reduces electron recombination and achieves higher efficiency than conventional P-type PERC cells. In the HYPERSOL G12R this translates into power output up to 635 Wp and module efficiency around 23.5%. It also has a lower temperature coefficient (-0.28%/°C), so the panel loses less output on hot days than typical PERC modules. ### What warranty does Vikram Solar offer on the HYPERSOL G12R series? The manufacturer provides a 12-year product warranty and a 30-year linear power output warranty. This means that after 30 years of operation, the module should still deliver the guaranteed percentage of its rated initial power as stated in the datasheet. This is standard for Tier 1 manufacturers and gives investors predictable long-term returns on the installation. ### How does the bifacial HYPERSOL G12R panel differ from a standard monofacial module? A bifacial module has active cells on both sides of the glass, allowing it to capture not only direct sunlight but also light reflected from the ground, roof, or a light-colored surface. The HYPERSOL G12R achieves a bifaciality factor of 80±5%, which in practice can add several percent to annual energy yield, especially when installed over light gravel, roofing membrane, or bright terrain. This meaningfully lowers the levelized cost of energy (LCOE) over the system's lifetime. ### What type of installations is the 635 Wp HYPERSOL G12R panel best suited for? Given its high unit power, large format (built on the G12R rectangular wafer with 132 half-cut cells), and weight of around 32 kg, the HYPERSOL G12R series targets utility-scale, commercial, and industrial projects, including large flat-roof warehouses. Needing fewer modules to reach a given system capacity reduces mounting structure, cabling, and installation labor costs. ### Does the HYPERSOL G12R perform well in high summer temperatures? Yes, this is one of the series' strengths. Thanks to N-type TOPCon technology, the power temperature coefficient is -0.28%/°C, meaning power losses from heating are smaller than in typical P-type panels (usually around -0.35%/°C). In practice, this means more stable energy production during hot, sunny days, which matters particularly for installations in warmer climates or on heavily sun-exposed roofs. ### Is Vikram Solar a reliable, bankable manufacturer of solar panels? Vikram Solar is an India-based Tier 1 manufacturer, meaning financial stability, in-house production lines, and a proven track record supplying large bankable projects. The HYPERSOL G12R panels comply with international IEC and UL standards, which simplifies project financing and insurance. Tier 1 status reduces investor risk of the manufacturer exiting the market before the warranty period ends. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/HYPERSOL-G12R-615-640W-132-CELLS-5e683cbe790c.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | Cooler, lighter, +1.7 pp | | [AIKO AIKO-A680-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a680-mde72mw) | 680 W | +45 W, lighter, +1.7 pp | | [AIKO AIKO-A675-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a675-mde72mw) | 675 W | +40 W, lighter, +1.5 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | Cooler, lighter, +1.5 pp | | [AIKO AIKO-G670-MCH72Mw](https://comparepv.com/panel/aiko-aiko-g670-mch72mw) | 670 W | +35 W, lighter, +1.3 pp | | [Longi Solar LR7-72HVHF-670M](https://comparepv.com/panel/longi-lr7-72hvhf-670m) | 670 W | +35 W, lighter, +1.3 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | Cooler, lighter, +1.3 pp | | [Vikram Solar HYPERSOL VSMDH.66.610.05](https://comparepv.com/panel/vikram-solar-hypersol-vsmdh-66-610-05) | 610 W | -25 W, -0.9 pp | | [Vikram Solar HYPERSOL VSMDH.66.615.05](https://comparepv.com/panel/vikram-solar-hypersol-vsmdh-66-615-05) | 615 W | -20 W, -0.7 pp | | [Vikram Solar HYPERSOL VSMDH.66.620.05](https://comparepv.com/panel/vikram-solar-hypersol-vsmdh-66-620-05) | 620 W | -15 W, -0.6 pp | | [Vikram Solar HYPERSOL VSMDH.66.625.05](https://comparepv.com/panel/vikram-solar-hypersol-vsmdh-66-625-05) | 625 W | -10 W, -0.4 pp | | [Vikram Solar HYPERSOL VSMDH.66.630.05](https://comparepv.com/panel/vikram-solar-hypersol-vsmdh-66-630-05) | 630 W | Very close match | | [Vikram Solar HYPERSOL VSMDH.66.640.05](https://comparepv.com/panel/vikram-solar-hypersol-vsmdh-66-640-05) | 640 W | Very close match | | [AIKO AIKO-A700-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a700-mae78dw) | 700 W | +65 W, cooler, +1.5 pp | | [AIKO AIKO-A695-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a695-mae78dw) | 695 W | +60 W, cooler, +1.4 pp | | [Jinko Solar JKM650-670N-66QL6-BDV (670W class)](https://comparepv.com/panel/jinko-solar-jkm650-670n-66ql6-bdv-670w-class) | 670 W | +35 W, cooler, +1.3 pp | --- Source: https://comparepv.com/panel/vikram-solar-hypersol-vsmdh-66-635-05 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.