Middle of its segment, needs the roof space
The Renesola RS4-470~490N-E1 series is designed to maximize energy yield under real-world operating conditions, even when the roof has limited surface area, and the investor expects a high power density installation. The modules utilize N-type monocrystalline cells, which contribute to better long-term stability and slower degradation over time. The use of TOPCon technology further enhances annual energy yield, particularly in variable sunlight conditions and during cooler months.
Another key feature of the series is the half-cut design with MBB, which reduces internal losses and improves resistance to partial shading - a practical solution for chimneys, skylights, or carport installations. The long linear power warranty also adds value, which is important for prosumers and companies that prioritize long-term profitability.
This is a good choice for homes, small and medium-sized businesses, and projects where high efficiency, predictable performance, and modern technology are valued over "paper" specifications.
Ranking
Signals from the data
Residential, commercial and shaded-installations.
Roofs where every square metre has to count and tight roof space.
Bottom 17% of the N-type 450-500 W segment, against a median of 225.2.
Bottom 18% of the N-type 450-500 W segment, against a median of 22.52%.
N-type TOPCon technology delivers a lower degradation rate (LID/LeTID) and better high-temperature performance than older P-type PERC cells, translating into higher real-world annual yield, especially in warmer months.
The module is bifacial, capturing additional energy from reflected light on the rear side - a meaningful advantage over mono-facial panels in the same power class, such as the Silfab HN (20.9% efficiency, no indicated bifaciality in the comparison).
The manufacturer guarantees a minimum of 87.4% power output after 30 years, matching the premium N-type segment standard and supporting long-horizon ROI calculations relevant to both businesses and prosumers.
The power temperature coefficient is -0.29%/°C, limiting output losses on hot days compared to typical PERC panels (usually -0.34% to -0.38%/°C).
At 1903x1134 mm and up to 490 Wp, the series reaches up to 22.71% efficiency, and its 120-cell half-cut MBB layout enables dense installations on roofs with limited surface area.
Peak efficiency of 22.71% is noticeably lower than direct competitors in the same power class (490 Wp) - Solar-Fabrik Mono S4 Halfcut BC and Heckert Solar ZEUS 3.0 Performance both reach 24%, over 1.2 percentage points higher.
- At 22.0% efficiency, this panel is 0.5pp below the N-type 450-500W median of 22.5%
- At 220.1 W/m², this panel generates 5.1 W/m² less per unit area than N-type 450-500W median (225.2 W/m²)
- Temperature coefficient of -0.29%/°C matches the N-type 450-500W median
- #6491 for efficiency, #2165 for temperature performance out of 14005 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 475 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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