The artifacts described in this document refer to the study, data, and implementation of the paper ´Twins or False Friends? A Study on Energy Consumption and Performance of Configurable Software''. In this document, we describes how the energy and performance measurement data set was collected and how the analysis of the correlation between energy consumption and performance can be repeated. Specifically, we describe the steps and tools that we have used to implement our approach, the data we have obtained, and the evaluation setup. We further list the available artifacts, such as raw measurements, configurations, and scripts which are available in a long-term data archive.