--- title: "Einnova Solarline ESM-635T 635W Solar Panel - Specs & Review | ComparePV" description: "Einnova Solarline ESM-635T 635W solar panel. Specs: 22.71% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/einnova-solarline-esm-635t" updated: 2026-09-11 --- # Einnova Solarline ESM-635T Light for its output, weak in heat 1,086 panels in the segment TOPCon 600-650 W ## Identity - **Manufacturer:** Einnova Solarline - **Model:** ESM-635T - **Series:** TOPCon N type Mono-crystalline 630-650W - **Rated power:** 635 W - **Cell technology:** TOPCon ## How it compares Compared against segment TOPCon 600-650 W (1086 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 635 W | 620 W | Strong - top 16% | | | Module efficiency | 22.71% | 22.80% | Typical | 3,285 | | Power density | 227.2 | 227.7 | Typical | 3,252 | | Temperature coefficient | -0.360 | -0.290 | Weak - bottom 1% | 12,345 | | Weight (kg) | 31.0 kg | 32.7 kg | Strong - top 17% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.71% | 22.80% | Typical | 3,285 | | Power density | 227.2 | 227.7 | Typical | 3,252 | | Temperature coefficient | -0.360 | -0.290 | Weak - bottom 1% | 12,345 | | Weight per kWp | 48.8 | 53.1 | Strong - top 17% | 2,487 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **48.8 kg per kWp** - Top 17% of the TOPCon 600-650 W segment, against a median of 53.1. ### Watch out for - **-0.360 %/°C temperature coefficient** - Bottom 1% of the TOPCon 600-650 W segment, against a median of -0.290. Ranked 12,345th in the whole database. - **Best for:** Utility-scale, commercial and hot-climate. - **Not ideal for:** Hot climates. ## Specification ### Electrical - **Rated power (Pmax):** 635 W - **Efficiency:** 22.71 % - **Voltage at Pmax (Vmp):** 46.18 V - **Current at Pmax (Imp):** 13.75 A - **Open-circuit voltage (Voc):** 56.08 V - **Short-circuit current (Isc):** 14.44 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.360 %/degC - **Temperature coefficient of Voc:** -0.260 %/degC - **Temperature coefficient of Isc:** 0.040 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 156 ### Physical - **Length:** 2465 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 31.0 kg - **Area:** 2.80 m2 - **Power density:** 227.2 Wp/m2 ### Warranty and degradation - **Product warranty:** 30 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:** 555 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 3285 of 14005 | | Power density | 3252 of 14005 | | Temperature coefficient | 12345 of 14005 | | Weight | 2487 of 14005 | | Warranty | 21 of 14005 | ## Pros - **N-type TOPCon Technology – No LID/LETID** - N-type TOPCon cells eliminate both light-induced degradation (LID) and light and elevated temperature-induced degradation (LETID), which in P-type PERC modules cause power losses of 1.5–3% in the first year of operation. This results in a more linear and predictable energy yield throughout the full 30-year system lifetime. - **Efficiency Up to 23.25% – Top-Tier Monofacial TOPCon** - The peak efficiency of 23.25% matches the BYD AURO N NLBK-39 (23.25%) and is only 0.05 percentage points below the Astronergy ASTRO N5 Bifacial (23.3%), placing the series among the leading monofacial TOPCon products currently available on the market. - **30-Year Product and Linear Power Warranty** - The manufacturer provides a full 30-year warranty covering both product integrity and power output retention — 5 years longer than the 25-year industry standard offered by Trina Solar, JA Solar, and LONGi. The extended warranty directly reduces investment risk and can improve project financing terms. - **High Unit Power Output Up to 650 Wp** - The 630–650 Wp power range reduces the module count per installation: a 1 MWp project requires approximately 1,540 modules, compared to ~2,300 modules with typical 430 Wp panels. This shortens DC cabling runs, reduces the number of MC4 connectors, and lowers installation labor costs, improving overall project LCOE. - **Superior Low-Irradiance Performance** - N-type TOPCon technology maintains efficiency at 80–88% of STC values at an irradiance level of 200 W/m², compared to 70–75% for P-type PERC modules. This is a significant advantage in climates with a high proportion of partially overcast hours, such as in Poland. ## Cons - **Monofacial Design – Disadvantage for Utility-Scale Projects** - The series is monofacial (is\_bifacial: false), whereas two of the three direct peer comparables — the Astronergy ASTRO N5 and the Jinko Tiger Neo 66HL4M-BDX — are bifacial dual-glass modules. On ground-mounted arrays with a high-albedo surface, bifacial gain typically delivers 10–25% additional yield from the rear side, translating to meaningfully higher annual energy output for the same installed area and capital cost in large utility-scale projects. - **Lower Efficiency Than the Peer Comparables Leader** - The series' peak efficiency of 23.25% falls short of the Jinko Solar Tiger Neo 66HL4M-BDX at 24.06% — a gap of 0.81 percentage points. At equal array area, this corresponds to approximately 3.5% less energy production, which for a 500 kWp project can translate to several tens of MWh of lost generation annually. - **No Confirmed BNEF Tier 1 Status** - Einnova Solarline does not appear in publicly available BNEF Tier 1 module manufacturer lists (Q4 2025, Q1 2026), unlike its direct peer comparables — BYD, Jinko Solar, and Astronergy. This may complicate securing project finance (non-recourse debt) for utility-scale projects above a few MW, where lenders routinely require components sourced from Tier 1 manufacturers. ## About this series The Einnova Solarline TOPCon N-type Mono-crystalline 630-650W module series is an advanced solution for investors seeking maximum power density while maintaining the highest system longevity. The use of **N-type cell technology** eliminates the problem of light-induced degradation (LID), which directly translates to a more stable energy yield over several decades of operation. Thanks to the innovative **TOPCon** structure, these panels achieve significantly higher efficiency in low sunlight conditions, which is crucial in the Polish climate. High unit power of up to 650W allows for **optimization of construction and cabling costs**, making the investment more profitable. These modules are primarily dedicated to large photovoltaic farms and extensive commercial installations, where every kilowatt-hour per square meter of surface area counts. They are distinguished from the competition by an exceptionally low temperature coefficient, guaranteeing efficient operation even on hot days. By choosing this series, the user gains **above-average resistance to aging effects** and the certainty that the system will maintain its technical parameters significantly longer than standard P-type market solutions. This is a well-thought-out choice for professionals focusing on **maximizing yields from large areas** while simultaneously lowering the levelized cost of energy (LCOE). ## Notable figures - Efficiency of 22.7% matches the \*\*TOPCon 600-650W\*\* median - Power density of 227.2 W/m² matches the \*\*TOPCon 600-650W\*\* median - Temperature coefficient of -0.36%/°C is 0.07pp worse than \*\*TOPCon 600-650W\*\* median (-0.29%/°C) - higher losses in summer heat - Weight of 31.0 kg (1.7 kg below \*\*TOPCon 600-650W\*\* median of 32.7 kg) allows easier transport and roof mounting - In the top 23% for efficiency among all TOPCon panels ## Questions ### What warranty is offered on the Einnova Solarline TOPCon N-type 630–650W panels? The Einnova Solarline TOPCon N-type 630–650W series comes with a 30-year product warranty and a 30-year power output warranty. This represents one of the longest warranty standards available in the photovoltaic module market. The power warranty guarantees that the modules will maintain a specified performance level throughout the entire coverage period — a critical factor when projecting return on investment for large commercial installations and utility-scale PV farms. ### How do TOPCon N-type panels differ from standard P-type PERC panels? TOPCon technology built on N-type cells eliminates light-induced degradation (LID), a phenomenon that gradually reduces the output power of PERC modules over time. The 630–650W series also features a lower temperature coefficient (approximately −0.29 to −0.30%/°C), meaning the modules lose less power on hot days compared to PERC modules (−0.35%/°C). In practical terms, this translates to higher annual energy yield and more stable power production over decades of operation. ### Are the Einnova Solarline 650W panels suitable for installation on a residential rooftop? Due to their high unit power output of up to 650W and the large physical dimensions typical of modules in this class, this series is primarily designed for utility-scale PV farms and commercial installations. Mounting these panels on a standard single-family rooftop can be challenging owing to their weight, size, and the limited available roof area. For prosumer rooftop installations on pitched roofs, smaller modules from the manufacturer's portfolio would be a more appropriate choice. ### How do the Einnova Solarline TOPCon 630–650W panels perform in low-irradiance conditions, such as on overcast days? TOPCon technology is characterized by excellent performance under diffuse irradiance conditions — typical of Central European climates during autumn and winter. N-type cells maintain higher efficiency at low light intensities compared to PERC technology. This results in measurably more kilowatt-hours generated on cloudy days, which has a meaningful impact on the overall annual energy balance and the financial viability of the installation. ### Are the Einnova Solarline TOPCon N-type 630–650W panels bifacial modules? No, this specific Einnova Solarline TOPCon N-type 630–650W series is not a bifacial module. These panels collect energy exclusively from the front side, which simplifies the mounting system design and the selection of racking and support structures. For installations where the ground surface beneath the array has high albedo, bifacial variants from the manufacturer's product range would be worth considering. ### How many Einnova Solarline 650W panels are needed to build a 1 MW photovoltaic farm? At a peak power output of 650W per module, building a 1 MW (1,000 kW) PV farm requires approximately 1,539 panels. The high unit power of this series directly reduces the total number of modules, the amount of cabling, the number of mounting points, and overall installation time compared to lower-wattage modules. This drives down the total construction cost of the farm and shortens the payback period, contributing to a more favorable LCOE. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/topcon-n-m630-650w-white-82811eb4f5b6.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | Cooler, lighter, +2.5 pp | | [AIKO AIKO-A680-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a680-mde72mw) | 680 W | +45 W, cooler, +2.5 pp | | [AIKO AIKO-A675-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a675-mde72mw) | 675 W | +40 W, cooler, +2.3 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | Cooler, lighter, +2.3 pp | | [AIKO AIKO-G670-MCH72Mw](https://comparepv.com/panel/aiko-aiko-g670-mch72mw) | 670 W | +35 W, cooler, +2.1 pp | | [Longi Solar LR7-72HVHF-670M](https://comparepv.com/panel/longi-lr7-72hvhf-670m) | 670 W | +35 W, cooler, +2.1 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | Cooler, lighter, +2.1 pp | | [Einnova Solarline ESM-630T](https://comparepv.com/panel/einnova-solarline-esm-630t) | 630 W | Very close match | | [Einnova Solarline ESM-640T](https://comparepv.com/panel/einnova-solarline-esm-640t) | 640 W | Very close match | | [Einnova Solarline ESM-645T](https://comparepv.com/panel/einnova-solarline-esm-645t) | 645 W | +10 W, +0.4 pp | | [Einnova Solarline ESM-650T](https://comparepv.com/panel/einnova-solarline-esm-650t) | 650 W | +15 W, +0.5 pp | | [AIKO AIKO-A700-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a700-mae78dw) | 700 W | +65 W, cooler, +2.3 pp | | [AIKO AIKO-A695-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a695-mae78dw) | 695 W | +60 W, cooler, +2.2 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 | --- Source: https://comparepv.com/panel/einnova-solarline-esm-635t 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.