  The current transition in the European energy sector towards climate
neutrality requires detailed and reliable energy system modeling. The quality
and relevance of the energy system modeling highly depend on the availability
and quality of model input datasets. However, detailed and reliable datasets,
especially for energy infrastructure, are still missing. In this contribution,
we present our approach to developing an open-source and open-data model of the
gas transport network in Europe. Various freely available data sources were
used to collect gas transport datasets and their attributes. The resulting
datasets of the various data sources were processed, and unique elements were
merged together. Statistical and heuristic methods were used to generate
missing network element attributes.
  As a result, we successfully created a gas transport network model only using
open-source data. The SciGRID_gas model contains 237.000 km of pipeline data
which is a very good approximation to know length values. In addition, datasets
of compressor stations, LNG terminals, storage, production sides, gas power
plants, border points, and demand time series are provided. Finally, we have
discussed data gaps and how they can potentially be closed.
