How reliable are PV inverters in Switzerland?

Häberlin et al. analysed the inverter reliability of PV systems in Switzerland between 1992 and 2009. He noted that the average age of the inverters has stagnated at around 110 months. However, many of the inverters had been repaired in the first years after commissioning.

What is the life cycle inventory phase of a commercial photovoltaic system?

Energy payback time and carbon footprint of commercial photovoltaic systems. Solar Energy Materials & Solar Cells 119: 296–305. The life cycle inventory phase of LCA involves data compilation of materials and energy inputs, and emissions and product outputs for the complete life cycle of the system under analysis.

Does PV module degradation affect inverter life expectancy?

An IEEE publication from Aalborg University deals with the influence of PV module degradation on the lifetime of inverters. The publication assumes inverters to have a higher life expectancy if a lower PV power capacity is connected to the inverter.

How long does a PV inverter last?

Inside the inverter, numerous electronic components such as IGBTs, capacitors, and inductors have a limited lifespan, which prevents the inverter from reaching the 25-year lifespan of PV modules. During the entire lifecycle of a PV power plant, at least one inverter replacement is required.

Do inverters have a higher life expectancy?

The publication assumes inverters to have a higher life expectancy if a lower PV power capacity is connected to the inverter. A system in Denmark is compared with a more degrading one in Arizona (Denmark: 0.15%/a, Arizona: 1%/a). The lifetime of the inverter in Arizona is underestimated by 54% (7 years).

What is the life cycle of photovoltaics?

The life-cycle of photovoltaics starts from the extraction of raw materials (cradle) and ends with the disposal (grave) or recycling and recovery (cradle) of the PV components (Figure 1).