Interest in hydrogen as a carbon-neutral energy carrier is on the rise around the globe, including in Europe. In particular, power-to-gas as a technology to transform electricity to hydrogen is receiving ample attention. This article scrutinises current updates in the energy law framework of the EU to explain the legal pre-conditions for the various possible applications of power-to-gas technology. It highlights the influence of both electricity and gas legislation on conversion, storage and transmission of hydrogen and demonstrates why ‘green’ hydrogen might come with certain legal privileges under the Renewable Energy Directive attached to it, as opposed to the European Commission’s so-called ‘clean’ hydrogen. The article concludes by advocating for legal system integration in EU energy law, namely merging the currently distinct EU electricity and gas law frameworks into one unified EU Energy Act.

包括欧洲在内的全球对氢作为碳中和能源载体的兴趣正在上升。尤其是，以煤气为燃料将电能转化为氢气的技术受到了广泛的关注。本文仔细研究了欧盟能源法框架中的最新更新，以解释各种适用于电力到天然气技术的法律前提条件。它强调了电力和天然气立法对氢的转化，存储和传输的影响，并说明了为什么“绿色”氢可能会根据所附的《可再生能源指令》享有某些法律特权，而不是与欧盟委员会所谓的“清洁氢。本文最后主张倡导将欧盟能源法中的法律体系整合，