--- title: "JS Solar JS 220P 220W Solar Panel - Specs & Review | ComparePV" description: "JS Solar JS 220P 220W solar panel. Specs: 16.75% efficiency, Polycrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/js-solar-js-220p" updated: 2026-09-11 --- # JS Solar JS 220P Middle of its segment, weak in heat 609 panels in the 120-320 W band, all technologies ## Identity - **Manufacturer:** JS Solar - **Model:** JS 220P - **Series:** JS200W-225W - **Rated power:** 220 W - **Cell technology:** Polycrystalline ## How it compares Compared against 120-320 W band, all technologies (609 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 220 W | 265 W | Typical | | | Module efficiency | 16.75% | 16.80% | Typical | 13,516 | | Power density | 167.5 | 167.9 | Typical | 13,504 | | Temperature coefficient | -0.450 | -0.370 | Weak - bottom 4% | 13,852 | | Weight (kg) | 15.4 kg | 17.5 kg | Typical | | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 16.75% | 16.80% | Typical | 13,516 | | Power density | 167.5 | 167.9 | Typical | 13,504 | | Temperature coefficient | -0.450 | -0.370 | Weak - bottom 4% | 13,852 | | Weight per kWp | 70.0 | 67.3 | Typical | 13,406 | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,798 | ### Watch out for - **-0.450 %/°C temperature coefficient** - Bottom 4% of the 120-320 W band, against a median of -0.370. Ranked 13,852nd in the whole database. - **Best for:** Residential, commercial and off-grid. - **Not ideal for:** Hot climates. ## Specification ### Electrical - **Rated power (Pmax):** 220 W - **Efficiency:** 16.75 % - **Voltage at Pmax (Vmp):** 26.20 V - **Current at Pmax (Imp):** 8.40 A - **Open-circuit voltage (Voc):** 31.23 V - **Short-circuit current (Isc):** 9.23 A - **Max system voltage:** 1000 V ### Temperature - **Temperature coefficient of Pmax:** -0.450 %/degC - **Temperature coefficient of Voc:** -0.320 %/degC - **Temperature coefficient of Isc:** 0.060 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Polycrystalline - **Cell count:** 48 ### Physical - **Length:** 1324 mm - **Width:** 992 mm - **Thickness:** 35 mm - **Weight:** 15.4 kg - **Area:** 1.31 m2 - **Power density:** 167.5 Wp/m2 ### Warranty and degradation - **Product warranty:** 10 years - **Performance warranty:** 25 years - **Output guaranteed at end of warranty:** 81.4 % - **First-year degradation:** 3.00 % - **Annual degradation:** 0.65 % - **Output after 30 years:** 172 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 13516 of 14005 | | Power density | 13504 of 14005 | | Temperature coefficient | 13852 of 14005 | | Weight | 13406 of 14005 | | Warranty | 9798 of 14005 | ## Pros - **Positive power tolerance** - Modules carry a positive power tolerance (typically 0/+5 Wp for this class), ensuring every unit delivers at least its rated output, reducing the risk of underestimating real-world energy yield and minimizing mismatch losses within string configurations. - **AR-coated glass for diffuse-light performance** - The 3.2 mm tempered glass with anti-reflective coating improves light absorption at low incidence angles and under overcast conditions — a practical advantage in the Polish climate where diffuse irradiance accounts for a significant share of annual insolation, especially in autumn and winter. - **25-year linear power warranty** - The manufacturer provides a 25-year linear performance warranty, matching the industry baseline shared by peer comparables Waaree ARUN Series and TPL M-48, ensuring predictable LCOE forecasting across the full system depreciation period. - **IEC 61215 / IEC 61730 + PID certification** - The series holds IEC 61215 (crystalline module durability), IEC 61730 (safety), and PID (Potential Induced Degradation) resistance certifications, confirming EU installation compliance and compatibility with negative-grounded BoS configurations. ## Cons - **Series discontinued since 2018** - The JS200W-225W line was discontinued in 2018 after approximately 8 years on the market (launched 2010). Availability of mechanical spare parts, frames, and replacement glass is limited, and post-sale manufacturer support for this series is significantly reduced compared to active product lines. - **Efficiency 15.23–17.13% below current benchmarks** - Peak efficiency of 17.13% lags significantly behind peer comparable JA Solar Monocrystalline80 (22.06%) and marginally behind TPL M-48 (17.18%). The gap versus JA Solar implies roughly 29% more roof area required to achieve the same installed capacity. - **Manufacturer not on BNEF Tier-1 list (Q1 2026)** - JS Solar (Yixing) does not appear on the BloombergNEF bankable manufacturers list for Q1 2026. This limits project bankability for commercial and C&I installations where lenders require Tier-1 module status as a financing condition. - **10-year product warranty below industry standard** - The workmanship warranty covers 10 years, while Tier-1 manufacturers (JA Solar, LONGi, Jinko Solar) standardly offer 12 years and premium manufacturers up to 25 years. The gap becomes meaningful for warranty claims arising in the second decade of operation. ## About this series The JS Solar JS200W-225W series is designed for installations where predictable performance and easy integration with popular inverters and charge controllers are essential. The modules utilize a proven crystalline architecture and emphasize stable parameter performance, making them well-suited for environments where operating conditions can change rapidly, from cool mornings to hot rooftops. A key feature is the **positive power tolerance**, which helps to minimize the risk of underestimating actual energy production. The use of tempered glass with an anti-reflective coating maximizes the use of diffuse light, which is crucial in the Polish climate, especially during cloudy and winter conditions. In practice, the series offers a **robust design** and **stable performance** in daily operation, as well as **compatibility with MC4 connectors**, which simplifies installation and maintenance. This makes it a good choice for homes, workshops, small businesses, patios, and off-grid systems, where reliability and ease of expansion are important. ## Notable figures - Module efficiency of 16.8% is 5.1pp below average for \*\*database\*\* panels (median: 21.8%) - 167.5 W/m² power density is 50.6 W/m² below \*\*database\*\* median (218.1 W/m²) - requires larger installation area - At -0.45%/°C, loses 0.15pp more power per degree than \*\*database\*\* median (-0.30%/°C) - At 15.4 kg, this panel is 11.1 kg lighter than \*\*database\*\* median (26.5 kg) - easier handling during installation - In the top 97% for efficiency among all N-type panels ## Questions ### What warranty comes with the JS Solar JS200W-225W solar panels? JS Solar provides a 10-year product warranty and a 25-year linear power output warranty on the JS200W-225W series. This means the modules are guaranteed to maintain output above the declared degradation threshold for 25 years. Because JS Solar is not a Tier 1 manufacturer, keeping purchase documentation is advisable — enforcing warranty claims from China typically requires the support of a local distributor. ### Is the JS Solar JS200W-225W series still available for purchase? The JS200W-225W series has been discontinued and is no longer in active distribution. Occasional stock may still be found through secondary market dealers or warehouse clearance. When buying a used module, inspect the glass, frame, and MC4 connectors carefully, and verify how many years of the power warranty remain. For new installations, a currently manufactured series with equal or higher power output is recommended. ### Are the JS Solar JS225W panels suitable for off-grid systems, workshops, or garden cabins? Yes. The 225 Wp output and standard MC4 connectors make these modules a solid match for small autonomous systems using MPPT or PWM charge controllers. They work well in garden cabins, workshops, summer houses, or camper vans. The crystalline architecture makes it straightforward to wire panels in series or parallel to match 12 V, 24 V, or 48 V battery banks common in off-grid BoS configurations. ### What does positive power tolerance mean for the JS Solar JS200W-225W and why does it matter? Positive power tolerance means the panel delivers at least the nameplate wattage under standard test conditions, and often slightly more. A module labeled 225 Wp will never fall below that figure at STC. In practice this reduces the risk of underestimating system yield during design and ensures the actual LCOE calculation stays favorable compared to panels shipped with negative or zero tolerance. ### How do the JS Solar JS200W-225W panels perform in overcast conditions and during Polish winters? The JS200W-225W modules feature tempered glass with an anti-reflective coating that improves absorption of diffuse radiation — a key advantage in climates where cloud cover dominates for much of the year. The crystalline cell architecture maintains stable efficiency at low temperatures, and the negative temperature coefficient of power means cold, bright winter days can produce surprisingly strong output. ### Which inverters and charge controllers are compatible with the JS Solar JS200W-225W series? The series is designed for broad compatibility with standard grid-tied inverters and MPPT or PWM charge controllers fitted with MC4 connectors. The open-circuit voltage of individual modules falls within the input range of most residential inverters. Before installation, confirm with your installer that the string voltage stays within the inverter's MPPT window, especially when wiring multiple panels in series. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/JS157P48-215W-5880eca7417d.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [JA Solar MYP3054-270](https://comparepv.com/panel/ja-solar-myp3054-270) | 270 W | +50 W, cooler, +1.2 pp | | [MY Solar MYP3054-270](https://comparepv.com/panel/my-solar-myp3054-270) | 270 W | +50 W, cooler, +1.2 pp | | [JA Solar MYP3054-265](https://comparepv.com/panel/ja-solar-myp3054-265) | 265 W | +45 W, cooler, +0.9 pp | | [MY Solar MYP3054-265](https://comparepv.com/panel/my-solar-myp3054-265) | 265 W | +45 W, cooler, +0.9 pp | | [JA Solar MYP3036-180](https://comparepv.com/panel/ja-solar-myp3036-180) | 180 W | Cooler, lighter, +0.9 pp | | [MY Solar MYP3036-180](https://comparepv.com/panel/my-solar-myp3036-180) | 180 W | Cooler, lighter, +0.9 pp | | [JA Solar MYP3048-235](https://comparepv.com/panel/ja-solar-myp3048-235) | 235 W | Cooler, lighter, +0.8 pp | | [MY Solar MYP3048-235](https://comparepv.com/panel/my-solar-myp3048-235) | 235 W | +15 W, cooler, +0.8 pp | | [JA Solar MYP3054-260](https://comparepv.com/panel/ja-solar-myp3054-260) | 260 W | +40 W, cooler, +0.6 pp | | [MY Solar MYP3054-260](https://comparepv.com/panel/my-solar-myp3054-260) | 260 W | +40 W, cooler, +0.6 pp | | [JS Solar JS 200P](https://comparepv.com/panel/js-solar-js-200p) | 200 W | -20 W, -1.5 pp | | [JS Solar JS 205P](https://comparepv.com/panel/js-solar-js-205p) | 205 W | -15 W, -1.1 pp | | [JS Solar JS 210P](https://comparepv.com/panel/js-solar-js-210p) | 210 W | -10 W, -0.8 pp | | [JS Solar JS 215P](https://comparepv.com/panel/js-solar-js-215p) | 215 W | -0.4 pp | | [JS Solar JS 225P](https://comparepv.com/panel/js-solar-js-225p) | 225 W | +0.4 pp | | [JA Solar MYM3048-265](https://comparepv.com/panel/ja-solar-mym3048-265) | 265 W | +45 W, cooler, +3.1 pp | --- Source: https://comparepv.com/panel/js-solar-js-220p Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.