D2.5.1.2 Mapping Energy Data Gaps and Reuse Barriers: Evidence and Implications for NFDI4Energy

The energy transition is increasingly a data challenge: models, monitoring, and public narratives all
depend on datasets that are not only available, but usable – granular, timely, well-documented, and
interoperable. Yet even in the comparatively data-rich European and German landscape of official
statistics, regulated transparency platforms, registries, and research repositories, stakeholders
repeatedly run into blind spots and frictions. The practical problem is not just “non-FAIR data,” but
also data that are missing in different ways: not collected at the needed resolution, inaccessible due
to confidentiality or technical barriers, or hard to trust and reuse when figures diverge across portals
and processing steps are not traceable.
This deliverable offers a structured, evidence-based “gap map” that helps practitioners and
researchers see where the bottlenecks sit – and what kinds of remedies they imply. It synthesises three
inputs: researcher surveys on missing reference datasets, and on missing elements and missing values
in industrial datasets, and contextual evidence from both the Destatis colloquium in 2024 and the
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SciCAR conference in 2025. Using a pragmatic domain structure and a typology of gap mechanisms,
the report consolidates heterogeneous observations into a coherent picture of where the energy data
ecosystem works well, where it breaks down, and which infrastructure levers can accelerate progress.