Solid all-round for its segment
The Renesola RS4-470~490NX-E1 series are modules designed for high energy production on a limited surface area - particularly where every square meter of roof space counts. The use of N-type cells in TOPCon technology results in more stable performance over time and lower degradation losses due to natural aging, making it easier to achieve predictable yields over the long term. The half-cut cell design improves the module's performance under partial shading and in situations of uneven sunlight, which are common on many roofs in Poland.
This is a good choice for residential and commercial installations where the priority is combining power with a stable performance in warmer weather - this is facilitated by the favorable temperature coefficient. The series also features a long linear power warranty, which supports the profitability of the investment. The RS4-470~490NX-E1 will be suitable for discerning investors who expect modern technology without compromising on reliability and operational durability.
Ranking
Signals from the data
Residential, commercial, shaded-installations and hot-climate.
N-type TOPCon cells reduce LID/LeTID degradation and offer better long-term stability compared to older PERC cells, resulting in a more predictable energy yield over a 20-30 year service life.
The half-cut cell design reduces power losses under partial shading and uneven irradiance - a common scenario on pitched roofs and around chimneys/vents in Poland - while also lowering the module's series resistance.
A 30-year linear power warranty supports long-term project economics and matches the standard now offered by leading N-type competitors such as Solar-Fabrik and Heckert Solar in their latest series.
ReneSola has been operating since 2005 and has historically held BloombergNEF Tier-1 bankability status, which has traditionally facilitated non-recourse project financing through banks.
Power up to 490 Wp with efficiency up to 22.71% delivers more energy per unit of roof area than older PERC modules, which matters for installations with limited mounting space.
The product warranty is 15 years, while some competing premium N-type series (e.g., Solar-Fabrik Mono S4 Halfcut BC) offer 25-30 years of product warranty - any mechanical or material failure after this period falls on the owner to repair or replace.
Peak efficiency of 22.71% is notably lower than comparable series such as Solar-Fabrik Mono S4 Halfcut BC and Heckert Solar ZEUS 3.0 Performance, which reach 24% at the same 490 Wp power class - meaning a slightly larger array area is needed to achieve the same installed capacity.
- At 22.7% efficiency, this panel is on par with typical N-type 450-500W modules
- Power density of 227.1 W/m² matches the N-type 450-500W median
- At -0.29%/°C, hot weather performance is typical for N-type 450-500W panels
- Ranked #3285 out of 14005 panels for efficiency in the database
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 490 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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