Judgment in Case C-110/20 Regione Puglia:
A Member State may, within the geographical limits set by it, grant several licenses to the same operator for the prospection, exploration and production of hydrocarbons, such as petrol and natural gas, for adjacent areas, provided that it ensures non-discriminatory access to those activities for all operators and assesses the cumulative effect of projects likely to have significant effects on the environment
These requirements follow from the relevant EU legislation on public procurement rules and on protection of the environment
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Source – EU Court of Justice