The Russian invasion of Ukraine in 2022 caused a significant disruption to Europe's energy supply chains, highlighting the region's heavy reliance on Russian energy. The abrupt reduction in Russian energy exports led to a surge in energy prices and forced European countries to rethink their energy strategies. Europe responded by accelerating diversification efforts and reducing dependence on Russian energy through initiatives like the REPowerEU plan, which targets a two-thirds reduction in Russian fossil fuel imports by 2027. This shift includes increasing LNG imports from the U.S. and Qatar, boosting renewable energy capacity, and improving energy efficiency. Solar and wind energy are at the forefront of Europe's energy transition, with plans to expand solar capacity and offshore wind projects significantly by 2030. Additionally, hydrogen, particularly green hydrogen, is set to play a crucial role in decarbonizing industries. While the transition to renewables offers greater energy security, challenges such as intermittency and grid upgrades need to be addressed through energy storage solutions and infrastructure enhancements. The geopolitical implications of Europe's energy crisis are reshaping the region's energy landscape and fostering a strategic reorientation towards renewable sources.