--- title: "Resun Solar RS8I-555M-F30 555W Solar Panel - Specs & Review | ComparePV" description: "Resun Solar RS8I-555M-F30 555W solar panel. Specs: 21.50% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/resun-solar-rs8i-555m-f30" updated: 2026-09-11 --- # Resun Solar RS8I-555M-F30 Light for its output, weak in heat 7,234 panels in the 455-655 W band, all technologies ## Identity - **Manufacturer:** Resun Solar - **Model:** RS8I-555M-F30 - **Series:** RS8I-M HALF-CELL - **Rated power:** 555 W - **Cell technology:** Monocrystalline ## How it compares Compared against 455-655 W band, all technologies (7234 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 555 W | 560 W | Typical | | | Module efficiency | 21.50% | 22.30% | Typical | 7,958 | | Power density | 214.8 | 222.8 | Typical | 8,034 | | Temperature coefficient | -0.390 | -0.300 | Weak - bottom 1% | 13,579 | | Weight (kg) | 27.2 kg | 29.0 kg | Strong - top 23% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.50% | 22.30% | Typical | 7,958 | | Power density | 214.8 | 222.8 | Typical | 8,034 | | Temperature coefficient | -0.390 | -0.300 | Weak - bottom 1% | 13,579 | | Weight per kWp | 49.0 | 52.7 | Strong - top 23% | 2,682 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **49.0 kg per kWp** - Top 23% of the 455-655 W band, against a median of 52.7. ### Watch out for - **-0.390 %/°C temperature coefficient** - Bottom 1% of the 455-655 W band, against a median of -0.300. Ranked 13,579th in the whole database. - **Best for:** Residential, commercial and shaded-installations. - **Not ideal for:** Hot climates. ## Specification ### Electrical - **Rated power (Pmax):** 555 W - **Efficiency:** 21.50 % - **Voltage at Pmax (Vmp):** 42.06 V - **Current at Pmax (Imp):** 13.19 A - **Open-circuit voltage (Voc):** 49.98 V - **Short-circuit current (Isc):** 14.03 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.390 %/degC - **Temperature coefficient of Voc:** -0.320 %/degC - **Temperature coefficient of Isc:** 0.050 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell count:** 144 ### Physical - **Length:** 2278 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 27.2 kg - **Area:** 2.58 m2 - **Power density:** 214.8 Wp/m2 ### Warranty and degradation - **Product warranty:** 15 years - **Performance warranty:** 30 years - **Annual degradation:** 0.50 % - **Output after 30 years:** 469 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 7958 of 14005 | | Power density | 8034 of 14005 | | Temperature coefficient | 13579 of 14005 | | Weight | 2682 of 14005 | | Warranty | 21 of 14005 | ## About this series The RS8I-M HALF-CELL series consists of monocrystalline photovoltaic modules built with large 182 mm silicon wafers, split using **half-cut** cell technology. This design significantly reduces power losses caused by partial shading and protects the module against hot-spot effects, translating into greater durability under demanding operating conditions. The use of a **multi-busbar** grid combined with PERC technology and high-density encapsulation ensures stable performance even in low-light environments - mornings, evenings, and cloudy days. RS8I-M panels perform reliably in installations exposed to strong wind and heavy snow loads, making them well suited to coastal regions, continental climates, or roofs with challenging geometry. This solution is aimed both at private investors seeking **high power density** on limited roof space and at installation companies expanding existing PV systems. Its enhanced mechanical resistance and certification in line with international IEC standards make the RS8I-M series a solid choice for residential and commercial installations where reliability and efficient use of available mounting space both matter. ## Notable figures - Efficiency of 21.5% matches the \*\*database\*\* median - 214.8 W/m² power density is 3.2 W/m² below \*\*database\*\* median (218.1 W/m²) - requires larger installation area - -0.39%/°C temperature coefficient - 0.09pp worse than \*\*database\*\* median (-0.30%/°C), expect higher hot weather losses - Ranked #7958 out of 14005 panels for efficiency in the database ## Questions ### What is the maximum power output of the Resun Solar RS8I-M HALF-CELL panels? The RS8I-M HALF-CELL series reaches a maximum power output of up to 575 Wp. This is achieved through large 182 mm monocrystalline cells using half-cut technology and dense module encapsulation, resulting in high power density on a relatively compact panel footprint. This means fewer modules are needed to reach a given system capacity compared to older module designs. ### How does half-cell technology differ from standard photovoltaic panels? Half-cell technology involves cutting a standard silicon cell in half, which reduces current losses and limits the hot-spot effect under partial shading, for example from a chimney or antenna. In the RS8I-M series, this is combined with a multi-busbar grid and PERC technology, delivering higher efficiency and better resilience under challenging operating conditions compared to classic full-cell modules. ### What warranty comes with the Resun Solar RS8I-M HALF-CELL panels? The manufacturer provides a 15-year product warranty along with a 30-year power output warranty. This means the module maintains its rated power generation level, as specified in the datasheet, over three decades, while the 15-year period covers the manufacturer's responsibility for material and workmanship defects in the panel itself. ### Are RS8I-M HALF-CELL panels suitable for installations exposed to strong wind and heavy snow loads? Yes, the RS8I-M series features an enhanced mechanically robust construction, making it suitable for coastal installations, continental climates, and roofs subject to heavy snow loads. The panels are certified in accordance with international IEC standards, confirming their resistance to wind and snow loads typical of demanding climatic conditions in Central Europe. ### Is the RS8I-M HALF-CELL series a bifacial panel? No, the RS8I-M HALF-CELL series consists of mono-facial modules, not bifacial ones. This means they generate electricity solely from irradiance hitting the front surface, which is a standard and proven solution for typical rooftop installations where the rear side of the panel would not have access to reflected light anyway. ### Who are the Resun Solar RS8I-M HALF-CELL panels designed for? The RS8I-M HALF-CELL series suits both private investors looking for high power density on a limited roof area, as well as installation companies expanding existing PV systems. With power ratings up to 575 Wp and resilience to demanding weather conditions, these panels are a versatile choice for both residential and commercial installations. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/RS8I555-560M-F30-388289dc9e82.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | -45 W, cooler, +3.5 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | Cooler, lighter, +3.3 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | -50 W, cooler, +3.2 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | Cooler, lighter, +3.1 pp | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | Cooler, lighter, +2.9 pp | | [JA Solar JAT60S40-540/LR](https://comparepv.com/panel/ja-solar-jat60s40-540-lr) | 540 W | Cooler, lighter, +2.9 pp | | [Resun Solar RS8I-M HC-535](https://comparepv.com/panel/resun-solar-rs8i-m-hc-535) | 535 W | -20 W, cooler, -0.8 pp | | [Resun Solar RS8I-540M-BD](https://comparepv.com/panel/resun-solar-rs8i-540m-bd) | 540 W | -15 W, heavier, -0.6 pp | | [Resun Solar RS8I-M HC-540](https://comparepv.com/panel/resun-solar-rs8i-m-hc-540) | 540 W | -15 W, cooler, -0.6 pp | | [Resun Solar RS8I-545M-BD](https://comparepv.com/panel/resun-solar-rs8i-545m-bd) | 545 W | -10 W, heavier, -0.4 pp | | [Resun Solar RS8I-M HC-545](https://comparepv.com/panel/resun-solar-rs8i-m-hc-545) | 545 W | Cooler, heavier, -0.4 pp | | [Resun Solar RS8I-M FULL BLACK 550W](https://comparepv.com/panel/resun-solar-rs8i-m-full-black-550w) | 550 W | Heavier, -0.2 pp | | [Resun Solar RS8I-M HC-555](https://comparepv.com/panel/resun-solar-rs8i-m-hc-555) | 555 W | Cooler, heavier | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | +95 W, cooler, +3.7 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | +90 W, cooler, +3.5 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | +85 W, cooler, +3.3 pp | --- Source: https://comparepv.com/panel/resun-solar-rs8i-555m-f30 Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.