The Demand Series 420W-430W Panel

430W

Rated Power

30 years

Materials Warranty Term

30 years

Warranty

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Spec Sheet

High-Efficiency Monocrystalline N-Type TOPCon Cells

Delivers more electricity per panel and maintains output better over time—including in low-light or partial-shade conditions—so your system stays productive year after year.

20.6 W per ft² Power Density

Packs a high wattage into each square foot, meaning you need fewer panels to hit your energy goals—perfect if you’ve got limited roof space or want a more streamlined array.

On-Site Renewable Energy Generation

Produces clean power right where you need it, offsetting your grid usage, lowering monthly bills, and giving you protection against outages and rate hikes.

Key Specifications

PV Product Performance

High Power & Efficiency

420–430 W STC; ~369 W NMOT; ≥ 97% of rated power at 200 W/m².

Excellent Temperature Behavior

−0.35 %/°C coefficient; NOCT ~45 °C.

Long-Term Reliability

≤ 2 % first-year degradation, ≤ 0.4 %/year thereafter; ≥ 87.4 % power guaranteed over 30 years.

Robust Durability

Resistant to PID, salt mist, sand, ammonia & LID; 5,400 Pa wind and 2,400 Pa snow load.

System Compatibility

1,500 V DC max, 30 A fuse rating; IP68 junction box & MC4 connectors.

Superior Low-Irradiance Performance

Maintains ≥ 97 % of rated output under low-light (200 W/m²) and partial-shade conditions.

Product Warranty

30 years against defects in materials and workmanship on the frame, lamination, junction box, connectors, etc.

Power-Output Guarantee

• Year 1: ≥ 97.5 % of rated power
• Linear Degradation: ≤ 0.34 % per year thereafter
• Year 30: ≥ 87.4 % of rated power

Activation & Claims

Register your installation within 90 days to activate. Claims handled through Demand’s support network with repair, replacement, or prorated compensation.

Conditions

Modules must be installed per Demand’s manual and maintained (cleaning, no misuse). Warranty is transferable to new owners.

Cell Type & Configuration

N-Type TOPCon, half-cut cells (108 cells per module)

Dimensions (L × W × H)

1772 mm × 1134 mm × 30 mm

Weight

24 kg

Glass

2.0 mm high-transmission, AR-coated, tempered toughened glass

Encapsulation

POE (or EPE) dual-layer film

Backsheet

2.0 mm high-transmission, semi-tempered composite

Frame

30 mm anodized aluminum alloy

Junction Box

IP68-rated with bypass diodes

Cable

1 × 4 mm², 350 mm length (customizable)

Connectors

MC4-compatible

Mechanical Load Ratings

• Hail impact: Ø ≤ 25 mm at 23 m/s
• Wind load: 2400 Pa (≈ 244 kg/m²)
• Snow load: 5400 Pa (≈ 550 kg/m²)

IEC 61215

IEC 61730

IEC 61215 PERFORMANCE

IEC 61701

ISO9001

ISO14001

IEC 62716