--- title: "Renesola RS9-705NG-E1 705W Solar Panel - Specs & Review | ComparePV" description: "Renesola RS9-705NG-E1 705W solar panel. Specs: 22.70% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/renesola-rs9-705ng-e1" updated: 2026-09-11 --- # Renesola RS9-705NG-E1 Light for its output, no clear weak spot 90 panels in the segment N-type 700-750 W ## Identity - **Manufacturer:** Renesola - **Model:** RS9-705NG-E1 - **Series:** RS9-685~705NG-E1 - **Rated power:** 705 W - **Cell technology:** N-type - **Bifacial:** yes ## How it compares Compared against segment N-type 700-750 W (90 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 705 W | 710 W | Typical | | | Module efficiency | 22.70% | 22.88% | Typical | 3,307 | | Power density | 227.0 | 228.6 | Typical | 3,361 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight (kg) | 33.5 kg | 38.0 kg | Strong - top 5% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.70% | 22.88% | Typical | 3,307 | | Power density | 227.0 | 228.6 | Typical | 3,361 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight per kWp | 47.5 | 53.5 | Strong - top 5% | 1,740 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **47.5 kg per kWp** - Top 5% of the N-type 700-750 W segment, against a median of 53.5. Ranked 1,740th in the whole database. - **Best for:** Commercial, utility-scale and hot-climate. ## Specification ### Electrical - **Rated power (Pmax):** 705 W - **Efficiency:** 22.70 % - **Voltage at Pmax (Vmp):** 39.17 V - **Current at Pmax (Imp):** 18.00 A - **Open-circuit voltage (Voc):** 47.83 V - **Short-circuit current (Isc):** 18.82 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:** 132 - **Bifacial:** yes ### Physical - **Length:** 2384 mm - **Width:** 1303 mm - **Thickness:** 33 mm - **Weight:** 33.5 kg - **Area:** 3.11 m2 - **Power density:** 227.0 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:** 616 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 3307 of 14005 | | Power density | 3361 of 14005 | | Temperature coefficient | 2165 of 14005 | | Weight | 1740 of 14005 | | Warranty | 21 of 14005 | ## Pros - **N-type TOPCon cell technology** - N-type TOPCon technology delivers lower LID/LETID degradation and better high-temperature performance than older P-type PERC cells, and with a temperature coefficient of -0.29%/°C it provides a more stable yield on large ground-mount installations. - **30-year linear power warranty** - The manufacturer guarantees 87.4% power retention after 30 years, a linear warranty standard comparable to peer products (Luxen N6, Hanersun HiTouch 6N) that simplifies LCOE modeling and lowers investor risk on utility-scale projects. - **High power output up to 705 Wp per module** - A power range of 685-705 Wp and efficiency up to 22.7% deliver high power density per square meter, reducing the module count, DC wiring, and mounting structure needed to reach a given target installation capacity. - **Bifacial technology** - The bifacial module with tempered glass on both sides captures additional energy from reflected light, which is especially valuable on PV farms with light-colored ground cover or elevated mounting structures. - **Tier-1 bankable manufacturer** - Renesola, in operation since 2005, is classified as a Tier-1 bankable manufacturer, which eases project financing for banks and investment funds that require supplier bankability. ## Cons - **Short market track record** - The RS9-685~705NG-E1 series launched in 2023, so there is no long-term (10+ year) field degradation data yet - its rating relies mainly on manufacturer datasheet claims rather than extensive operational history. - **Large size and weight** - Dimensions of 2384 x 1303 x 33 mm and a weight of approximately 33.5 kg for the 705 Wp module require reinforced mounting structures and at least a two-person installation crew, which can raise logistics and installation costs compared to lighter standard modules. ## About this series The Renesola RS9-685~705NG-E1 series is designed for maximum energy production in large-scale installations, where every square meter and stable performance over time are crucial. The use of **N-type TOPCon cell technology** helps minimize typical power losses over time and improves performance in real-world conditions, even at higher temperatures and with varying solar irradiance. The module design emphasizes durability: **tempered glass** and robust construction ensure resistance to loads and wear in challenging environments. A key feature is **a long, linear power warranty**, which simplifies investment return planning and reduces risk for the investor. In practice, the RS9-685~705NG-E1 solves the problem of limited space by allowing for high power output from a smaller number of modules, which simplifies logistics and assembly on the DC side. This series is particularly suitable for PV farms, large industrial rooftops, and projects where predictable yields and **low degradation** are more important than just the nominal specifications. ## Notable figures - At 22.7% efficiency, this panel is on par with typical \*\*N-type 700-750W\*\* modules - At 226.9 W/m² power density, roof space requirements are typical for \*\*N-type 700-750W\*\* panels - At -0.29%/°C, hot weather performance is typical for \*\*N-type 700-750W\*\* panels - 33.5 kg weight - 4.5 kg lighter than \*\*N-type 700-750W\*\* median (38.0 kg), reducing installation effort - #3307 for efficiency, #2165 for temperature performance out of 14005 panels ## Questions ### What warranty does the Renesola RS9-685~705NG-E1 series come with? The RS9-685~705NG-E1 series includes a 15-year product warranty covering defects in materials and workmanship, plus a 30-year linear power warranty guaranteeing at least 87.4% of rated power output at the end of year 30. This warranty structure simplifies financial modeling for utility-scale and commercial PV projects and significantly reduces investor-side risk over the asset's lifetime. ### What is TOPCon technology and why does the RS9-685~705NG-E1 use it? TOPCon (Tunnel Oxide Passivated Contact) is an N-type silicon cell architecture that uses an ultra-thin tunnel oxide layer between the silicon base and rear contact to suppress carrier recombination. For the RS9 series this translates to module efficiency up to 22.7% and a low temperature coefficient of Pmax at -0.29%/°C, meaning smaller power losses on hot days compared to standard PERC modules. ### Is the Renesola RS9-705NG-E1 bifacial, and does that make a difference on a utility-scale farm? Yes, all modules in the RS9-685~705NG-E1 lineup are bifacial. The rear side captures reflected irradiance (albedo) from the ground surface, which on ground-mount systems with light-colored gravel or grass can boost energy yield by several percent at no added module cost. The gain is most significant in utility-scale installations where row spacing and tracker tilt can be optimized for bifacial gain. ### How heavy is the RS9-705NG-E1 panel and can a standard roof structure support it? Each module weighs 33.5 kg and measures 2384 × 1303 × 33 mm, a large-format G12 size primarily intended for industrial rooftops and ground-mount farms. For flat industrial roofs with steel or reinforced-concrete structures, the load is typically within design limits, but older roofs should be evaluated by a structural engineer before installation to confirm BoS load capacity. ### How do Renesola RS9-685~705NG-E1 panels perform under overcast skies and low-light conditions? N-type TOPCon cells deliver superior low-light performance compared to PERC technology, producing more energy during cloudy mornings, evenings, and low-sun winter months. Combined with the -0.29%/°C temperature coefficient of Pmax, the RS9 series maintains high output on hot bright days as well, resulting in a higher energy yield per installed kilowatt-peak across all seasons. ### Is the Renesola RS9-685~705NG-E1 series still available for purchase? Yes, the RS9-685~705NG-E1 series is currently active and available. Renesola is a Tier 1 manufacturer financed by leading energy banks, which ensures supply chain continuity, long-term availability of spare components, and reliable warranty service support throughout the full operational lifetime of the installation. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/rs9-685-705ng-e1-2384-1303-33-2d57a9d66f05.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A680-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a680-mde72mw) | 680 W | Cooler, lighter, +2.5 pp | | [AIKO AIKO-A675-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a675-mde72mw) | 675 W | -30 W, lighter, +2.3 pp | | [AIKO AIKO-A700-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a700-mae78dw) | 700 W | Cooler, heavier, +2.3 pp | | [AIKO AIKO-A695-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a695-mae78dw) | 695 W | -10 W, cooler, +2.2 pp | | [AIKO AIKO-G670-MCH72Mw](https://comparepv.com/panel/aiko-aiko-g670-mch72mw) | 670 W | -35 W, lighter, +2.1 pp | | [Longi Solar LR7-72HVHF-670M](https://comparepv.com/panel/longi-lr7-72hvhf-670m) | 670 W | -35 W, lighter, +2.1 pp | | [Jinko Solar JKM650-670N-66QL6-BDV (670W class)](https://comparepv.com/panel/jinko-solar-jkm650-670n-66ql6-bdv-670w-class) | 670 W | -35 W, cooler, +2.1 pp | | [Renesola RS9-650M-E1](https://comparepv.com/panel/renesola-rs9-650m-e1) | 650 W | -55 W, hotter, -1.8 pp | | [Renesola RS9-655M-E1](https://comparepv.com/panel/renesola-rs9-655m-e1) | 655 W | -50 W, hotter, -1.6 pp | | [Renesola RS9-660M-E1](https://comparepv.com/panel/renesola-rs9-660m-e1) | 660 W | Hotter, -1.4 pp, -5 yr warranty | | [Renesola RS9-665M-E1](https://comparepv.com/panel/renesola-rs9-665m-e1) | 665 W | Hotter, -1.3 pp, -5 yr warranty | | [Renesola RS9-670M-E1](https://comparepv.com/panel/renesola-rs9-670m-e1) | 670 W | Hotter, -1.1 pp, -5 yr warranty | | [AIKO AIKO-A805-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a805-grh78dw) | 805 W | +100 W, heavier, +2.4 pp | | [AIKO AIKO-A800-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a800-grh78dw) | 800 W | +95 W, heavier, +2.2 pp | | [AIKO AIKO-A795-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a795-grh78dw) | 795 W | +90 W, heavier, +2.1 pp | | [AIKO AIKO-A790-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a790-grh78dw) | 790 W | +85 W, heavier, +1.9 pp | --- Source: https://comparepv.com/panel/renesola-rs9-705ng-e1 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.