--- title: "Vikram Solar SOMERA VSMH.66.675.05 Solar Panel: Specs & Datasheet | ComparePV" description: "Vikram Solar SOMERA VSMH.66.675.05 solar panel. Specs: 21.73% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/vikram-solar-somera-vsmh-66-675-05" image: "https://comparepv.com/og/panel/vikram-solar-somera-vsmh-66-675-05.png" updated: 2026-09-11 --- # Vikram Solar SOMERA VSMH.66.675.05 Efficiency leader, weak in heat 320 panels in the segment PERC 650-700 W ## Identity - **Manufacturer:** Vikram Solar - **Model:** SOMERA VSMH.66.675.05 - **Series:** Somera VSMH.66.AAA.05 - **Rated power:** 675 W - **Cell technology:** PERC ## How it compares Compared against segment PERC 650-700 W (320 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 675 W | 660 W | Strong - top 6% | | | Module efficiency | 21.73% | 21.25% | Strong - top 4% | 7,434 | | Power density | 217.3 | 212.5 | Strong - top 6% | 7,413 | | Temperature coefficient | -0.350 | -0.340 | Weak - bottom 10% | 10,489 | | Weight (kg) | 33.6 kg | 34.5 kg | Strong - top 13% | | | Performance warranty | 27 yrs | 30 yrs | Typical | 9,781 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.73% | 21.25% | Strong - top 4% | 7,434 | | Power density | 217.3 | 212.5 | Strong - top 6% | 7,413 | | Temperature coefficient | -0.350 | -0.340 | Weak - bottom 10% | 10,489 | | Weight per kWp | 49.8 | 52.3 | Strong - top 13% | 3,236 | | Performance warranty | 27 yrs | 30 yrs | Typical | 9,781 | ### Strengths - **21.73% module efficiency** - Top 4% of the PERC 650-700 W segment, against a median of 21.25%. Ranked 7,434th in the whole database. - **217.3 watts per square metre** - Top 6% of the PERC 650-700 W segment, against a median of 212.5. Ranked 7,413th in the whole database. - **49.8 kg per kWp** - Top 13% of the PERC 650-700 W segment, against a median of 52.3. ### Watch out for - **-0.350 %/°C temperature coefficient** - Bottom 10% of the PERC 650-700 W segment, against a median of -0.340. - **Best for:** Utility-scale, commercial and shaded-installations. - **Not ideal for:** Hot climates. ## Specification ### Electrical - **Rated power (Pmax):** 675 W - **Efficiency:** 21.73 % - **Voltage at Pmax (Vmp):** 39.10 V - **Current at Pmax (Imp):** 17.27 A - **Open-circuit voltage (Voc):** 46.70 V - **Short-circuit current (Isc):** 18.17 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.350 %/degC - **Temperature coefficient of Voc:** -0.270 %/degC - **Temperature coefficient of Isc:** 0.050 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 132 ### Physical - **Length:** 2384 mm - **Width:** 1303 mm - **Thickness:** 35 mm - **Weight:** 33.6 kg - **Area:** 3.11 m2 - **Power density:** 217.3 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 27 years - **Output guaranteed at end of warranty:** 83.7 % - **First-year degradation:** 2.00 % - **Annual degradation:** 0.55 % - **Output after 30 years:** 554 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 7434 of 14129 | | Power density | 7413 of 14129 | | Temperature coefficient | 10489 of 14129 | | Weight | 3236 of 14129 | | Warranty | 9781 of 14129 | ## About this series The Somera VSMH.66.AAA.05 series is a monofacial G12-class PV module lineup designed for investors who expect stable energy output even in demanding environmental conditions. The panel uses **G12 half-cut Mono PERC cells** arranged in a 132 half-cell layout, which reduces resistive losses and delivers a more even current distribution across the module. A key advantage of this series is its **enhanced corrosion resistance** - the module maintains performance even when exposed to sand dust, concentrated ammonia, or salt mist, making it a solid choice for agricultural, industrial, and coastal installations. The manufacturer applies a **zero negative power tolerance** with a positive range of up to 4.99 Wp, combined with precise Imp binning that minimizes mismatch losses across module strings. The panel is manufactured on a fully automated production line with multi-stage EL inspection, resulting in a lower rate of factory defects. PVEL Top Performer certification confirms strong long-term reliability, while lower BoS costs translate into a **reduced LCOE** for the entire installation. This is a solution for anyone seeking durability and predictable ROI in challenging site conditions. ## Notable figures - At 21.7% efficiency, this panel is on par with typical \*\*PERC 650-700W\*\* modules - At 217.3 W/m² power density, this panel generates 4.8 W/m² more per unit area than \*\*PERC 650-700W\*\* median (212.5 W/m²) - At -0.35%/°C, hot weather performance is typical for \*\*PERC 650-700W\*\* panels - In the top 53% for efficiency among all PERC panels ## Questions ### Is the Vikram Solar Somera VSMH.66.AAA.05 series still available for purchase? No, the Somera VSMH.66.AAA.05 series has been discontinued. Units may still be found in distributor warehouses or as end-of-series stock, but Vikram Solar has replaced this line with newer models. Buyers interested in this series should check availability with local suppliers, as remaining inventory may sell out quickly. ### What warranty comes with the Somera VSMH.66.AAA.05 panels? The panels come with a 12-year product warranty and a 27-year linear power warranty. This covers both manufacturing defects and excessive performance degradation over time. This warranty length matches the standard offered by tier-1 manufacturers and gives investors predictable long-term returns on their solar installation. ### How do the half-cut Mono PERC cells in the Somera VSMH.66.AAA.05 differ from full-size cells? Using 132 G12 half-cut Mono PERC cells instead of full-size cells reduces resistive losses and results in a more even current distribution across the module. Splitting each cell in half lowers the current flowing through each segment, which reduces thermal losses and improves efficiency, especially under partial shading conditions. ### Are the Somera VSMH.66.AAA.05 panels suitable for coastal or agricultural installations? Yes, this is one of the series' key advantages. The modules feature enhanced corrosion resistance and maintain their performance parameters even under exposure to salt mist, sand dust, or concentrated ammonia. This makes them well-suited for coastal installations, agricultural farms, and industrial sites with aggressive environmental conditions. ### What is the maximum power output of the Somera VSMH.66.AAA.05 panels? Panels in this series reach a maximum power output of up to 680 Wp. The manufacturer applies zero negative power tolerance with a positive range of up to 4.99 Wp, meaning a purchased module will never fall below its rated power and often performs slightly above the label rating. ### Is Vikram Solar a tier-1 manufacturer, and where is the company based? Yes, Vikram Solar is classified as a tier-1 manufacturer, reflecting its financial stability and extensive experience in PV module production. The company is headquartered in India and operates fully automated production lines with multi-stage EL inspection, resulting in a low rate of factory defects and earning a PVEL Top Performer certification for long-term reliability. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/SOMERA-G12-655-680W-132-CELLS-6e0a21355963.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | Cooler, lighter, +3.5 pp | | [AIKO AIKO-A680-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a680-mde72mw) | 680 W | Cooler, lighter, +3.5 pp | | [AIKO AIKO-A675-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a675-mde72mw) | 675 W | Cooler, lighter, +3.3 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | Cooler, lighter, +3.3 pp | | [AIKO AIKO-A700-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a700-mae78dw) | 700 W | Cooler, +3.3 pp, +3 yr warranty | | [WINAICO WST-675BKX72-A2](https://comparepv.com/panel/winaico-wst-675bkx72-a2) | 675 W | Cooler, +3.3 pp, +3 yr warranty | | [AIKO AIKO-A695-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a695-mae78dw) | 695 W | Cooler, +3.2 pp, +3 yr warranty | | [AIKO AIKO-G670-MCH72Mw](https://comparepv.com/panel/aiko-aiko-g670-mch72mw) | 670 W | Cooler, lighter, +3.1 pp | | [Vikram Solar PARADEA VSMDH.66.AAA.05-655](https://comparepv.com/panel/vikram-solar-paradea-vsmdh-66-aaa-05-655) | 655 W | Heavier, -0.6 pp, +3 yr warranty | | [Vikram Solar PARADEA VSMDH.66.AAA.05-660](https://comparepv.com/panel/vikram-solar-paradea-vsmdh-66-aaa-05-660) | 660 W | Heavier, -0.5 pp, +3 yr warranty | | [Vikram Solar PARADEA VSMDH.66.AAA.05-665](https://comparepv.com/panel/vikram-solar-paradea-vsmdh-66-aaa-05-665) | 665 W | Heavier, -0.3 pp, +3 yr warranty | | [AIKO AIKO-A805-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a805-grh78dw) | 805 W | +130 W, cooler, +3.4 pp | | [AIKO AIKO-A800-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a800-grh78dw) | 800 W | +125 W, cooler, +3.2 pp | | [AIKO AIKO-A795-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a795-grh78dw) | 795 W | +120 W, cooler, +3.1 pp | | [AIKO AIKO-A790-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a790-grh78dw) | 790 W | +115 W, cooler, +2.9 pp | | [Trina Solar TSM-NEG21C.20Q-760](https://comparepv.com/panel/trina-solar-tsm-neg21c-20q-760) | 760 W | +85 W, cooler, +2.8 pp | --- Source: https://comparepv.com/panel/vikram-solar-somera-vsmh-66-675-05 Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.