Panel Technology

Half-Cut Cell

Half-cut cell panels use solar cells that have been precisely laser-cut in half before being wired into the module. A standard 60-cell panel becomes a 120-half-cut-cell panel, and a 72-cell panel becomes 144 half-cut cells. The cells are then wired in a series-parallel configuration that divides the panel into independent upper and lower halves.

Cutting cells in half reduces the current flowing through each cell by 50%, which cuts resistive power losses (I²R losses) by approximately 75%. This translates to real efficiency gains of 2% to 3% at the module level compared to full-cell designs using identical cell technology.

The split-panel wiring design also provides a significant advantage in partial shading. If shade falls on the bottom half of the panel, the top half continues producing at full output rather than the entire panel being dragged down. This makes half-cut panels more resilient in real-world conditions where trees, chimneys, and other obstructions cast partial shadows.

Half-cut cell technology is now standard across the solar industry. Nearly all modern panels from major manufacturers use half-cut or even third-cut cells. The laser cutting process adds minimal cost to manufacturing while delivering measurable performance improvements.

When shopping for panels, half-cut cells are effectively the baseline — you would have to seek out older or budget inventory to find full-cell panels today.

Frequently Asked Questions

Do half-cut panels cost more?

No. Half-cut cell technology has become the industry standard and no longer carries a price premium. Virtually all modern solar panels use half-cut or smaller cells, so the technology is baked into standard pricing.

How does half-cut help with shade?

The panel is wired as two independent halves. If shade covers the bottom portion, only that section's output drops — the top half keeps producing normally. With full cells wired in a single string, shade on any part can reduce the entire panel's output.