Efficiency leader, no clear weak spot
The JA Solar JAT60S40 LR series are modules engineered for maximum yield from the same rooftop surface - where every square meter counts, and investment profitability matters. What sets them apart is their N-type cell architecture, which performs better with typical operational losses and helps maintain stable energy production over the long term. Utilizing DeepBlue family solutions, such as cut cells and multi-string construction, minimizes the impact of micro-cracks and enhances performance under partial shading - effectively reducing unwanted yield losses, for instance, from chimneys, antennas, or window frame edges. This series also offers high mechanical strength and secure connection integrity, which is crucial for roofs exposed to wind, snow, and intense temperature cycles. It’s an excellent choice for both residential and commercial installations where durable quality and reliable performance year after year are expected, not just a good lab result.
Ranking
Signals from the data
Residential, commercial, shaded-installations and hot-climate.
Top 3% of the N-type 500-550 W segment, against a median of 22.54%. Ranked 99th in the whole database.
Top 3% of the N-type 500-550 W segment, against a median of 225.3. Ranked 127th in the whole database.
Top 3% of the N-type 500-550 W segment, against a median of 50.0. Ranked 306th in the whole database.
N-type TOPCon cells deliver a temperature coefficient of -0.30%/°C and significantly lower LID compared to PERC technology. The half-cut cell design combined with multi-busbar architecture (DeepBlue) reduces micro-crack propagation and partial-shade losses, translating to higher real-world annual energy yield on rooftops with obstructions such as chimneys, antennas, or dormer edges.
The 23–24.4% efficiency range places the JAT60S40 LR at the top of its peer group: DMEGC GHxxxM10T-B66HST reaches only 20.9%, and Horay Solar HS 199R-120 TC-D Delta only 23.1%. The only direct competitor reaching 24.4% is the Gokin GK-5-60HG, a product from a smaller manufacturer without Tier-1 status.
JA Solar guarantees linear degradation no greater than 0.4%/year and at least 87.4% of nominal power output after 30 years of operation. This covers the full financial horizon of a typical residential or commercial PV investment, providing stable LCOE projections throughout the system's lifecycle.
JA Solar is continuously listed on BloombergNEF's Tier-1 bankable manufacturer list (Q1 2026) and ranks among the five largest PV module manufacturers globally, exceeding 80 GW of annual production capacity. Tier-1 bankable status materially reduces credit and warranty risk in non-recourse project financing.
Seven sub-variants spanning 510–540 Wp allow system designers to match modules to MPPT channel constraints and roof area limitations without energy yield compromises. Fine-grained power selection reduces string mismatch losses in complex array layouts.
The product warranty is limited to 15 years, whereas the current market standard for premium N-type modules is 25 years. JA Solar's own newer DeepBlue 4.0 Pro series already offers a 25-year product warranty. For commercially financed installations, the shorter warranty period can be a barrier in risk assessments by insurers and project finance lenders.
- 24.4% module efficiency - 1.9pp better than the N-type 500-550W median of 22.5%
- Power density of 243.8 W/m² packs 18.5 W/m² more into the same footprint vs N-type 500-550W median (225.3 W/m²)
- Temperature coefficient of -0.26%/°C vs median -0.29%/°C means ~1% less power loss at 65°C
- Weight of 23.5 kg (2.7 kg below N-type 500-550W median of 26.2 kg) allows easier transport and roof mounting
- Ranked #99 out of 14005 panels for efficiency in the database
Specifications
Datasheet charts
Measured curves published by JA Solar in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 540 Wp appear here. The rest cover the whole series.
Simulations
Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.
Found 488 panels of the same or similar size to this one, within ±10 mm. See them here Found 507 panels of the same or similar size to this one, within ±25 mm. See them here Found 1260 panels of the same or similar size to this one, within ±50 mm. See them here Found 1469 panels of the same or similar size to this one, within ±100 mm. See them here