Light for its output, modest efficiency
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.
Ranking
Signals from the data
Commercial, utility-scale, hot-climate and shaded-installations.
Tight roof space and roofs where every square metre has to count.
Top 23% of the N-type 600-650 W segment, against a median of 52.7.
Bottom 22% of the N-type 600-650 W segment, against a median of 22.77%.
Bottom 22% of the N-type 600-650 W segment, against a median of 227.7.
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.
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.
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.
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.
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.
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.
- Efficiency of 22.4% matches the N-type 600-650W median
- Power density of 223.6 W/m² is 4.1 W/m² below N-type 600-650W median (227.7 W/m²) - needs more roof space
- At -0.29%/°C, hot weather performance is typical for N-type 600-650W panels
- Weight of 30.0 kg (2.5 kg below N-type 600-650W median of 32.5 kg) allows easier transport and roof mounting
- In the top 36% for efficiency among all N-type panels
Specifications
Datasheet charts
Measured curves published by Renesola in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 625 Wp appear here. The rest cover the whole series.
Simulations
Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.
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