Publication Date

7-15-2023

Document Type

Article

Publication Title

Solar Energy

Volume

259

DOI

10.1016/j.solener.2023.04.063

First Page

229

Last Page

234

Abstract

The maintenance and analyzing failures of PV systems and plants are becoming more and more important issues. Our data from the long-term operation of 85 photovoltaic power plants in central Europe show that their actual lifetime is about half that of the originally planned lifetime. After about 10 years, serious failures of 1st tier (bankable) PV panels occur at an increasing rate. This article presents selected typical data and describes the most serious failures. Furthermore, economic calculations of returns on investment are carried out in relation to the price of electricity, which is currently changing at a rapid pace. It shows that the PV panel lifetime reduction from 20 to 30 years, declared at commercial leaflets, to real lifetime about 10–12 years can reduce PV power plant profit substantially, but the investment is still worth it. The reason is that after 10–12 years ser vice/maintenance expenses to replace damaged PV panels and inverters are growing very quickly. The new information could be helpful for owners of PV power plants to get a more realistic estimation of profits.

Funding Number

2023:31120/1312/3106

Funding Sponsor

Česká Zemědělská Univerzita v Praze

Keywords

Carbon footprint, Delamination, Failures, Lifetime, Photovoltaic power plant, Return on investment

Creative Commons License

Creative Commons License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.

Department

Electrical Engineering; Mechanical Engineering

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