The document summarizes the objectives and key topics discussed at the 5th International Conference on Mechanical Engineering and Renewable Energy (ICMERE-2019). The conference focused on studying current global energy consumption and the role of different energy sources like fossil fuels, nuclear power, and renewables. It discussed challenges like meeting increasing demand through low-cost and low-carbon sources. Presentations analyzed energy resources, generation and consumption trends over time for different fuels. The impact of various energy sources on climate change and their economic costs were also evaluated. The conference emphasized the need for sustainable energy solutions to address future challenges.