--- title: "Renesola RS7-620N-E2 620W Solar Panel - Specs & Review | ComparePV" description: "Renesola RS7-620N-E2 620W solar panel. Specs: 22.18% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/renesola-rs7-620n-e2" updated: 2026-09-11 --- # Renesola RS7-620N-E2 Light for its output, modest efficiency 359 panels in the segment N-type 600-650 W ## Identity - **Manufacturer:** Renesola - **Model:** RS7-620N-E2 - **Series:** RS7-615~635N-E2 - **Rated power:** 620 W - **Cell technology:** N-type ## How it compares Compared against segment N-type 600-650 W (359 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 620 W | 625 W | Typical | | | Module efficiency | 22.18% | 22.77% | Weak - bottom 12% | 5,930 | | Power density | 221.8 | 227.7 | Weak - bottom 13% | 5,869 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight (kg) | 30.0 kg | 32.5 kg | Strong - top 25% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.18% | 22.77% | Weak - bottom 12% | 5,930 | | Power density | 221.8 | 227.7 | Weak - bottom 13% | 5,869 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight per kWp | 48.4 | 52.7 | Strong - top 25% | 2,244 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **48.4 kg per kWp** - Top 25% of the N-type 600-650 W segment, against a median of 52.7. ### Watch out for - **22.18% module efficiency** - Bottom 12% of the N-type 600-650 W segment, against a median of 22.77%. - **221.8 watts per square metre** - Bottom 13% of the N-type 600-650 W segment, against a median of 227.7. - **Best for:** Commercial, utility-scale, hot-climate and shaded-installations. - **Not ideal for:** Tight roof space and roofs where every square metre has to count. ## Specification ### Electrical - **Rated power (Pmax):** 620 W - **Efficiency:** 22.18 % - **Voltage at Pmax (Vmp):** 46.97 V - **Current at Pmax (Imp):** 13.20 A - **Open-circuit voltage (Voc):** 56.80 V - **Short-circuit current (Isc):** 13.86 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.290 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.045 %/degC - **NOCT:** 43 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** N-type - **Cell count:** 156 ### Physical - **Length:** 2465 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 30.0 kg - **Area:** 2.80 m2 - **Power density:** 221.8 Wp/m2 ### Warranty and degradation - **Product warranty:** 15 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:** 542 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 5930 of 14005 | | Power density | 5869 of 14005 | | Temperature coefficient | 2165 of 14005 | | Weight | 2244 of 14005 | | Warranty | 21 of 14005 | ## Pros - **N-type TOPCon cell technology** - N-type TOPCon cells offer a lower LID/LeTID degradation rate and better high-temperature performance than legacy PERC cells, translating into more stable annual energy yield, particularly during summer months. - **30-year power warranty down to 87.4%** - The manufacturer guarantees at least 87.4% of nominal power retained after 30 years of operation, a premium-tier standard for N-type modules that supports long-term ROI planning for commercial and ground-mount installations. - **BNEF Tier-1 status** - ReneSola, founded in 2005, has repeatedly held a place on Bloomberg New Energy Finance's Tier 1 list, confirming the manufacturer's financial bankability and easing bank financing approval for projects using this series. - **High module power with IP68 rating** - A power range of 615-635 Wp with up to 22.72% efficiency and an IP68-rated junction box make the series well-suited to maximizing available roof space on warehouses and ground-mount installations, while withstanding harsh environmental conditions. ## Cons - **Efficiency trails segment leaders** - Peak efficiency of 22.72% lags behind competing modules in the same power class (up to 635 Wp) - Longi Hi-MO X10 (23.5%) and Sunpro Power TOPCon 210R (23.51%). This means lower power density per m2 than the best tier-1 rivals. - **No bifacial variant available** - Unlike the comparable Sunpro Power and Talesun TM7G78M series, which offer bifacial modules, the RS7-615~635N-E2 is mono-facial only, forgoing the additional 5-10% albedo-driven yield gain available in ground-mount and high-reflectivity rooftop installations. ## About this series The Renesola RS7-615~635N-E2 series comprises modules based on **N-type cells in TOPCon technology**, designed for high energy production under real-world operating conditions. The architecture employed minimizes losses and helps maintain stable performance even in hot weather, leading to more predictable annual yields. This makes it a good choice when maximizing available surface area is a priority - whether on the roofs of warehouses and factories, or in ground-mounted installations where optimizing power balance is key. In practice, the RS7-615~635N-E2 series stands out due to its **high module efficiency** and emphasis on long-term reliability: the manufacturer offers **extended power warranty**, which simplifies investment planning. The design featuring an **IP68-rated junction box** enhances resistance to harsh environmental conditions, while compatibility with common connectors simplifies installation. This series is ideal for investors who expect modern cell technology, high yields, and trouble-free operation for years to come. ## Notable figures - Module efficiency of 22.2% is 0.6pp below average for \*\*N-type 600-650W\*\* panels (median: 22.8%) - 221.8 W/m² power density is 5.9 W/m² below \*\*N-type 600-650W\*\* median (227.7 W/m²) - requires larger installation area - Temperature coefficient of -0.29%/°C matches the \*\*N-type 600-650W\*\* median - 30.0 kg weight - 2.5 kg lighter than \*\*N-type 600-650W\*\* median (32.5 kg), reducing installation effort - #5930 for efficiency, #2165 for temperature performance out of 14005 panels ## Questions ### What warranty does the Renesola RS7-615~635N-E2 series come with? Renesola backs the RS7-615~635N-E2 series with a 15-year product warranty and a 30-year linear power output warranty. A 30-year power guarantee is among the longer commitments available on the market and makes it easier to model ROI across the full system lifetime. Keep your purchase documentation, as the warranty period starts from the date of sale. ### What is TOPCon technology and why does the RS7-615~635N-E2 use it? TOPCon (Tunnel Oxide Passivated Contact) is an N-type cell architecture that adds a thin tunnel oxide layer to minimize carrier recombination. Compared to standard PERC cells, it delivers higher module efficiency and a lower temperature coefficient. In the RS7-615~635N-E2, this translates to a maximum output of 635 Wp and better annual energy yield from the same roof or ground area. ### Do the RS7-615~635N-E2 panels lose significant power in hot weather? N-type TOPCon cells have a lower temperature coefficient than PERC cells, meaning less power loss when module temperature exceeds 25°C. The RS7-615~635N-E2 was designed for stable real-world performance, where modules can heat up to 50-70°C on sunny summer days. Installations on dark metal roofing or in warm climates can expect relatively low thermal losses compared to older PERC-based alternatives. ### Is the Renesola RS7-615~635N-E2 series suitable for large commercial and utility-scale installations? Yes, with a maximum output of 635 Wp and high module efficiency, the RS7-615~635N-E2 is well suited for commercial rooftop systems on warehouses and industrial buildings, as well as ground-mounted arrays. Fewer modules required to reach the target system capacity means lower BoS costs for mounting structures and cabling, which improves the overall project economics. ### What ingress protection rating does the RS7-615~635N-E2 junction box have, and why does it matter? The RS7-615~635N-E2 junction box carries an IP68 ingress protection rating, providing complete dust-tight sealing and resistance to temporary immersion in water. This protects electrical connections from rain, condensation, and standing water accumulation on the module surface. The connectors are compatible with standard MC4 systems widely used by inverter and cable manufacturers, simplifying installation and future maintenance. ### Is Renesola a reliable manufacturer and are the RS7-615~635N-E2 modules certified? Renesola is recognized as a Tier 1 PV module manufacturer by independent rating agencies, reflecting financial stability and consistent production quality. The RS7-615~635N-E2 series targets the European market and complies with IEC 61215 and IEC 61730 certification requirements. With over 20 years in the solar industry and its own manufacturing capacity, Renesola provides a credible counterparty for long-term warranty claims. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/rs7-615-635n-n-type-182-156-mono-facial-module-1-8accba49a284.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | +30 W, lighter, +3.0 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | Cooler, lighter, +2.8 pp | | [AIKO AIKO-G670-MCH72Mw](https://comparepv.com/panel/aiko-aiko-g670-mch72mw) | 670 W | +50 W, cooler, +2.6 pp | | [Longi Solar LR7-72HVHF-670M](https://comparepv.com/panel/longi-lr7-72hvhf-670m) | 670 W | +50 W, cooler, +2.6 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | Cooler, lighter, +2.6 pp | | [Jinko Solar JKM650-670N-66QL6-BDV (670W class)](https://comparepv.com/panel/jinko-solar-jkm650-670n-66ql6-bdv-670w-class) | 670 W | +50 W, cooler, +2.6 pp | | [Renesola RS7-615N-E2](https://comparepv.com/panel/renesola-rs7-615n-e2) | 615 W | Very close match | | [Renesola RS7-625N-E2](https://comparepv.com/panel/renesola-rs7-625n-e2) | 625 W | Very close match | | [Renesola RS7-630N-E2](https://comparepv.com/panel/renesola-rs7-630n-e2) | 630 W | +10 W, +0.4 pp | | [Renesola RS7-635N-E2](https://comparepv.com/panel/renesola-rs7-635n-e2) | 635 W | +15 W, +0.5 pp | | [AIKO AIKO-A680-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a680-mde72mw) | 680 W | +60 W, cooler, +3.0 pp | | [AIKO AIKO-A675-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a675-mde72mw) | 675 W | +55 W, cooler, +2.8 pp | | [AIKO AIKO-A700-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a700-mae78dw) | 700 W | +80 W, heavier, +2.8 pp | | [AIKO AIKO-A695-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a695-mae78dw) | 695 W | +75 W, heavier, +2.7 pp | --- Source: https://comparepv.com/panel/renesola-rs7-620n-e2 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.