Should you replace PV modules with a failing backsheet?

Apart from the cost, the environmental impact of prematurely discarding PV modules long before their normal end-of-life is substantial and should be avoided. An alternative approach to replacing modules with a failing backsheet is to repair them.

Can solar panels be repaired?

This repair technology can be done in the field and is an alternative solution to module replacement. Over the last few years, several solar park operators have observed a premature degradation of some photovoltaic (PV) modules.

What happens if a PV panel is replaced?

If voltage or current differs on a replacement panel, it cannot simply be integrated into an existing string and new electrical layouts need to be made, which involves planning and engineering work. DuPont has come to the rescue with its PV Rescue Tape, at a fraction of the cost of panel replacement.

Why do backsheets crack?

Some types of backsheets are known to develop cracks because of an aging-induced change in the mechanical characteristics of the material during operation in the field, which result in a loss of insulation resistance. In this work, we present a solution for repair and preventive maintenance based on a single component flowable silicone sealant.

Can Tedlar PV rescue tape help extend the life of solar panels?

“There is great demand from both module manufacturers and asset owners for repair products which can help extend the usable lifetime of solar panels. Our specialized repair process, customized for Tedlar PV Rescue Tape, reduces costs versus a full replacement of affected panels.

Can a backsheet be repaired?

Backsheet failures have plagued the industry, causing hefty financial burdens to many asset owners. DuPont has launched a product it says allows for easy repair of modules. The new backsheet is simply glued to a cracked backsheet using a strong adhesive. The butyl rubber has previously been used in other applications.