What is Halfcut Technology?

Half-cell solar modules (half-cut modules) are photovoltaic modules that consist of halved solar cells. This generation of solar cells offers advanced features and benefits.

The Fraunhofer Institute for Solar Energy Systems (Fraunhofer ISE) has found that half-cell modules achieve 2-3% more power than modules with conventional full cells, even though they are made of the same material.

Unlike a normal solar cell (full cell), the reduction in size in half cells results in a lower current intensity. The division of the solar cells reduces the amperage per solar cell by half.

The mathematical formula provides the exact power loss of solar cells. This is reduced by the half-cut technology - a significant advantage that is demonstrated here.

(The power losses in a half-cell module decrease by a factor of four, since the power loss is calculated from the product of the line resistance and the square of the current.)

Solar modules with lower power losses are more efficient and thus achieve higher solar yields.

Halfcut solar modules not only feature advanced half-cells. Another striking feature is the separate connection of the individual half-cells in two separate current paths. To do this, the half-cells of a segment are connected in series in six strings. The two segments are then connected to one another in the middle by means of a parallel circuit.

The design of the half-cell modules has the special advantage that the weak light behavior changes fundamentally. Photovoltaic modules with regular full cell connection produce no more electricity even with slight shading! Half-cell modules, on the other hand, can still generate electricity. The unshaded half of the module continues to generate income due to the clever design. With upright installation, a remaining output of 50% can still be expected even with partial shading in the morning or evening.

The two independent current paths, installed in the middle of the module, enable a 50% increase i