On 7 April 2026, the AEE INTEC team published a paper on “Open-Source Tool for Performance Analytics of Solar Thermal Plants” in the Journal of Open Source Software.
Summary:
SunPeek is an open-source software designed to automate the performance evaluation of
solar thermal plants, focusing on large-scale installations. Addressing both researchers and
plant operators, SunPeek provides a practical framework for operational performance analysis.
SunPeek computes expected solar thermal output using models based on ISO 24194 and
automates data ingestion and cleaning, performance modeling and data analysis, result
visualization, and report generation. SunPeek emerged from collaboration between research
institutes and industry partners (Tschopp, Ohnewein, Hamilton-Jones, et al., 2024; Tschopp
et al., 2025). To our knowledge, it provides the first open-source implementation of the ISO
24194 Power Check (International Organization for Standardization, 2022), a standardized
methodology for evaluating the power performance of solar thermal collector fields. SunPeek
also integrates an open dataset, comprising a full year of measurement data from a real-world,
large-scale solar plant, as described in a journal article (Tschopp et al., 2023).
Read the full paper here.