Provided widespread vaccination will bring the COVID-19 pandemic under full control worldwide, the contrast to climate change and the energy transition as one of its main actions will return at the top of national and international policy agendas. This paper employs multivariate diffusion models to investigate and quantitatively assess the competitive power of renewable energy technologies and their perspectives along the invoked energy transition. The study was conducted for the period 1965-2019 on a number of selected case studies, that were considered critically representative of the current transition process in view of their energy and political context. The dynamic relationship between renewable technologies and natural gas has been at the core of the analysis, trying to establish whether gas could be considered as a bridging technology or a lock-in. The main findings show that in all the analyzed countries RETs have exerted a strongly competitive effect towards gas. In most cases, gas is found to have a bridging role, aiding the uptake of renewables.

翻译：与气候变化和能源过渡形成对照的是,其主要行动之一将回到国家和国际政策议程的首位,本文件采用多种传播模式,调查和定量评估可再生能源技术的竞争力及其在所援引能源过渡过程中的观点;1965-2019年期间,对若干选定的案例研究进行了研究,这些案例研究因其能源和政治背景而被认为对当前过渡进程具有关键代表性;可再生技术和天然气之间的动态关系一直是分析的核心,试图确定天然气是否可被视为连接技术或锁定技术;主要研究结果显示,在所有受分析国家,可再生能源技术对天然气具有很强的竞争效应;在大多数情况下,天然气具有桥梁作用,有助于可再生能源的吸收。