Mahliyo Botir qizi Suyunova and Khayrulla Sunnatulllayevich Isakhodjayev 2025. Cogeneration Power Plants: Working Principle and Efficiency Optimization. American Journal of Applied Science and Technology. 5, 06 (Jun. 2025), 120–123. DOI:https://doi.org/10.37547/ajast/Volume05Issue06-26.