This dataset was used as a data corpus for a bibliometric analysis with the title "Unveiling Openness in Energy Research: A Bibliometric Analysis Focusing on Open Access and Data Sharing Practices". The CSV file (2024-12-06_OpenAlex_API_download_works_Energy_Germany_(2013-2023)) was collected on December 6th, 2024, by using the OpenAlex API and search criteria: OpenAlex field "Energy", continent “Europe”, country “Germany”, and publication years 2013 – 2023. Based on this file, two sample files were extracted - one by subfield (2024-12-06_OpenAlex_API_dwonload_works_Energy_Germany_(2013-2023)_sampled_by_subfield) and another by year group (2024-12-06_OpenAlex_API_download_works_Energy_Germany_(2013-2023)_sampled_by_year_group). This dataset was collected and used to answer the following research questions: - What percentage of energy research publications are OA? How do the types (gold, green, etc.) of these publications differ? - Are there notable differences in OA and data sharing practices in different subfields of energy research? - How commonly are datasets for energy studies shared? What are the primary repositories used? - What kind of data sharing or publication practices are widespread? How has this evolved over the last decade?