These documents contain anonymized and condensed qualitative and quantitative data, which were part of a study about laundry loadshifting behavior in Dutch households with solar panels. In February 2022, six semi-structured interviews were conducted with experts working in the field of solar energy. The findings from these interviews were used to build a quantitative survey, which was distributed to Dutch prosumers from March 25th 2022, to April 1st 2022. Of these survey participants, 283 responses were included for data analysis (those who took at least 60 seconds to answer all questions and who did not appear to have straightlined). Raw data, such as anonymized interview transcripts and survey responses, exist but are not included here. The interview and survey questions, as well as codes used for data analysis, are in this folder. In addition, this folder includes the results of the quantitative analyses (exploratory factor analysis and reliability analysis) which are supplementary to the main results depicted in the paper about this study. This study was part of a master thesis project: the complete thesis can be accessed through the repository of Delft University of Technology (see repository.tudelft.nl/islandora/object/uuide3517e7d-054b-499d-af48-d7b60662ccae?collection=education).