Solar photovoltaic panel cracking

Why do solar power plants have cell cracks?

As climate change accelerates and weather patterns change, force majeure events such as wildfires, hail and other storms are more likely to afect solar power plants. This white paper explains the problem of cell cracks and discusses how PV module buyers, investors and asset owners can mitigate risk by investing in durable PV modules.

Can crystalline silicon (c-Si) solar cells crack?

Cracking of crystalline silicon (c-Si) solar cells in PV modules is widely reported and it is a well-known problem in the PV industry since it may damage the mechanical integrity of the PV module and hence, result in the reduction of maximum power output due to the disconnected areas of the cell [6, 10].

What happens if a solar module cracks?

The module could produce less energy if these cracks restrict the flow of current through the cell. A local hotspot may eventually form in the damaged area of the cell, which can accelerate backsheet degradation and delamination, eventually increasing the risk that ground and arc faults will occur.

What causes glass & cell cracks in PV modules?

Hail, hurricanes, tornadoes and other high wind events are all known to cause glass and cell cracks in PV modules. Asset owners can mitigate the risk of cell-level damage in their fleets by investing in more robust PV modules, especially for projects in storm-prone regions.