Most of the gas consumed in the EU is imported from other countries, which demands the use of a complex Gas Transmission Network in order to make gas accessible to different consumers. Key components in the EU gas transmission network are pipelines, Liquified Natural Gas (LNG) terminals, compressor stations and Underground Storage (UGS) facilities, among others. All its components are subject to different hazards and threats of different sources which may seriously jeopardise the access of EU consumers to gas. The most rigorous way to study the potential effect of different disruption scenarios on the EU gas transmission network and its resilience is by means of models. These models must be able to simulate the network behaviour reasonably well under normal conditions and under gas disruptions and crises.
The JRC has two models to simulate gas crises: GEMFLOW and EU-GAS-10. GEMFLOW is a mass balance model where each EU Member State is a node. EU-GAS-10 is a hydraulic model at the level of facilities (pipeline, compressor station, etc.) for ten Eastern European countries (Austria, the Czech Republic, Estonia, Greece, Hungary, Latvia, Lithuania, Poland, Romania, Slovakia). Both models allow the simulation of gas crises. The JRC’s ongoing activities comprise the expansion of EU-GAS-10 (the Netherlands, Germany and Bulgaria), the construction of a new gas model with reliability assessment capabilities (GEMFLOW-reliability) and the modelling of a joint gas-electricity model to study interaction between both networks.