title: Which Energy Solidarity Union?
abstract: The Russian invasion of Ukraine caught the European Union (EU) off-balance. Many European member-states were, on the onset of the war, heavily reliant on energy supplies provided by Russia. Against this background, some have proposed a unified approach for the creation of EU-wide strategic energy reserves, which would ensure a buffer against future energy shocks, but also provide temporary relief to the participating countries should some of them experience temporary issues with their energy sup