Historically, the main supplier of L-gas in North West Europe was the Groningen gas field in the Netherlands. Since 2012 Belgium, France, Germany and the Netherlands have been working together to phase-out L-gas. Initially, the phase-out was motivated by the natural decline of the capacity of the Groningen field. However, in March 2018 the government of the Netherlands, in order to guarantee safety in the Groningen area, announced its decision to terminate natural gas production from the Groningen field as soon as possible, and no later than 2030. After an earthquake which occurred on 22 May 2019 near Westerwijtwerd, the schedule for production phase-out was accelerated to gas year 2022/23 for average weather conditions. From the summer of 2022 onward, gas from the Groningen gas field will only be used as back-up for the nitrogen blending facilities, L-gas storages and potential disruptions in H-gas supply.