In many places, the electricity sector is transitioning towards greater share of renewable energy technologies. In the initial phase of the transition, a primary concern for research and policy was to establish renewables as technically and economically viable options. Today, the situation is different: renewables are diffusing rapidly in many electricity grids, thereby generating major changes for existing technologies, organizations and infrastructures. In this new phase of the energy transition, we do not just witness an acceleration of earlier transition dynamics, but also qualitatively new phenomena. These include a complex interaction of multiple technologies, the decline of established business models and technologies, intensified economic and political struggles of key actors such as utility companies and industry associations, and major challenges for the overall functioning and performance of the electricity sector (for example, when integrating renewables). Drawing on a transition studies perspective, this paper compares the two phases and discusses implications for research and policymaking.

中文翻译：

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能源转型的下一阶段及其对研究和政策的影响

在许多地方，电力部门正在向可再生能源技术的更大份额过渡。在过渡的初始阶段，研究和政策的首要考虑是将可再生能源确定为技术上和经济上可行的选择。如今，情况有所不同：可再生能源在许多电网中迅速扩散，从而对现有技术，组织和基础设施产生了重大变化。在能量过渡的这一新阶段，我们不仅见证了更早的过渡动力学的加速，而且还见证了质的新现象。其中包括多种技术的复杂相互作用，已建立的商业模式和技术的衰落，公用事业公司和行业协会等主要参与者的经济和政治斗争日趋激烈，电力部门的整体运作和绩效面临的主要挑战（例如，整合可再生能源时）。本文从过渡研究的角度出发，比较了两个阶段，并讨论了对研究和政策制定的意义。