@article{article_1722584, title={Alkaline Water Electrolysis: A Review on Technological Progress, Market Dynamics, and Environmental Implications}, journal={International Journal of Energy Horizon (IJEH)}, volume={1}, pages={39–60}, year={2025}, author={Çankaya, Alperen and Kılıç, Ahmed Emin and Kaplan, Yüksel}, keywords={Hydrogen Production, Carbon Emission Reduction, Alkaline Electrolyzer, Sustainability, Green Hydrogen}, abstract={As global climate change continues to change rapidly, the development of sustainable and environmentally friendly energy technologies that can replace fossil fuels has become one of the top priorities in energy policy and research. Renewable energy sources such as geothermal, wind, and solar energy play a critical role in low-emission energy production; however, due to structural limitations such as intermittency and dependence on weather conditions, they cannot alone provide a continuous and reliable energy supply. In this context, hydrogen energy stands out as a strategic energy carrier that offers a solution to the intermittent nature of renewable energy sources, thanks to its high energy density, broad potential for use across different sectors, and long-term energy storage capacity. Green hydrogen, in particular, is of critical importance in terms of converting and storing excess renewable electricity production for reuse when needed. This eliminates the temporal mismatch between energy production and consumption, minimizing the carbon footprint of energy systems. Among current hydrogen production methods, alkaline water electrolysis (AWE) stands out due to its commercial maturity, relatively low investment and operating costs, stable operating performance, and ability to adapt to variable renewable energy inputs. Considering this, current developments in alkaline electrolyzer technologies are systematically examined in terms of principles, components and materials, performance optimization approaches, market dynamics, techno-economic assessments, and environmental and sustainable dimensions.}, number={2}, publisher={Ankara Yildirim Beyazit University}