How long do solar photovoltaic modules last?

Manufacturers of solar photovoltaic modules usually guarantee the life span for more than 20 years. It is therefore necessary to track and mitigate degradation of PV modules over this period to satisfy such guarantees and beyond this period to identify maintenance and repair requirements.

How long do PV modules last?

As manufacturers usually guarantee the life span of PV modules for more than 20 years (Li, 2016 ), it is therefore necessary to track and mitigate the degradation of PV modules over this period. Both during and beyond this period knowing degradation behaviour is essential for operation, maintenance and repair.

What does %/year mean in a photovoltaic system?

These rates (usually expressed in %/year) mirror a linear decline in the performance of the modules over the years. According to Jordan et al. its value depends directly on the type of photovoltaic technology applied as well as the location where the module is installed .

What is photovoltaic cell degradation?

Photovoltaic cells degradation is the progressive deterioration of its physical characteristics, which is reflected in an output power decrease over the years. Consequently, the photovoltaic module continues to convert solar energy into electrical energy although with reduced efficiency ceasing to operate in its optimum conditions.

Are photovoltaic modules durable?

However, there are some challenges concerning the durability of photovoltaic modules that need to be overcome. Several factors lead to its degradation with a progressive reduction in its efficiency over the years. This aging depends on the type of photovoltaic technology and on the environment where the modules are installed.

Do solar PV modules lose power after 20 years outdoor exposure?

They monitored the electrical power outputs of monocrystalline silicon, polycrystalline silicon and amorphous silicon modules. They found 8–12% decrease of maximum power output of the PV modules ( Pmax) after 20 years outdoor exposure.