The global energy economy is undergoing a profound transformation, yielding several pivotal objectives. Foremost among these is mitigating greenhouse gas emissions and toxic pollutants. Another essential goal involves promoting more sustainable economies, thereby curbing material consumption and reducing our reliance on resource extraction. Further priorities include fostering energy security and economic resilience by reducing dependence on external energy sources. All these aims overlap in one common policy: accelerating the renewable energy capacity deployment. Complementing this paradigm shift is the complete electrification of economic activities and households, resulting in the need to incentivize green electricity generation. In this context, this book undertakes a comprehensive exploration of the regulatory framework underpinning the advancement of green electricity. After reviewing the political and economic dimensions, it offers an exhaustive analysis of ongoing developments in four legal domains: The WTO, EU, Germany, and Turkey. Furthermore, the book presents a legal analysis of the intricate interplay between the WTO and EU law coupled with the German and Turkish models. It focuses on the most topical and relevant issues, including the effect of the ongoing energy crisis on state aid for green electricity in the EU; WTO case law on local content requirement components of the promotion schemes; the intricate legal, economic, and political challenges that accompany Germany’s Energiewende and its phasing out of coal and nuclear energy; and Turkey’s regulatory endeavors to bolster its energy self-sufficiency strategy. Following a thorough examination encompassing theoretical, regulatory, and comparative aspects, the book moves beyond the applicable legal framework to make concrete proposals on the future design of green electricity promotion in Germany and Turkey so as to facilitate a rapid but socially equitable energy transition by incentivizing economic efficiency.