Reliability of Battery Systems in PV Power Plants
Day: Thursday, 17 September 2026
Time: 13:30 PM – 15:00 PM
Venue: World Trade Center (WTC), Rotterdam, The Netherlands
Access: Open to all registered conference participants
Join us for an insightful session on methods for assessing the performance and reliability of battery energy storage systems (BESS) in operating solar power plants. We will explore methods that owners and operators of such systems can use to determine key performance indicators and share experiences from operating systems with different functions. The discussion will begin with an overview of the most common BESS technologies in solar power plants and the key use cases for which they are set up, as well as a discussion of their impact on performance and reliability. It then examines best practices and technical challenges related to reliability assessment of operating systems based on available time series data. Operational experiences related to the impact of the physical environment and specific use cases will then be discussed. This session will provide a valuable opportunity for industry professionals, researchers and policy makers to engage with experts and contribute to the future of sustainable PV systems, which increasingly rely on the integration of BESS for reliable and profitable operation.
Objectives
- Provide a review of the technologies and main use cases of battery systems in Solar Power Plants today
- Discuss efficient methods for assessing the performance and reliability of battery systems in Solar Power Plants in operation
- Exchange operational experience from several such systems in operation
Schedule
13:30 – 13:40
Welcome and Introduction to this topic
Ulrike Jahn, IEA PVPS Task 13 Manager
13:40-13:55
Overview of PV Battery Technology and Use cases
Erik Stensrud Marstein, IFE, Norway
13:55-14:10
Performance, Degradation and Lifetime
Christian Messner, AIT, Austria
14:10-14:25
Operational experience from battery systems in PV Power Plants
Patrik Ollas, RISE, Sweden (tbc)
14:25-14:55
Panel Discussion & Wrap-up of this Workshop
With relevant Experts from other PVPS Tasks to discuss more broadly the PVPS work on PV & Storage.
- Erik Stensrud Marstein, IFE, Norway
- Michael Müller, OFRES, Batteries in Offgrid systems, Task 18 (invited)
- Ulrike Jahn, IEA PVPS Task 13 Manager (moderator)
14:55-15:00
Wrap-up of this Workshop
- Erik Stensrud Marstein, IFE, Norway
15:00
End of Workshop