Municipal solid waste (MSW) has long been regarded as a reliable and efficient source of waste-to-energy conversion. However, the conversion approach has many drawbacks that limit its application. This paper explores MSW to energy innovations as a potential solution to understand better MSW's potential applications in energy generation, existing technologies, technological feasibility, and environmental effect. The study used a Multimoora-based MCDM model to convert MSW to energy in a picture-fuzzy environment to build more effective technology for future generations. The incineration, pyrolysis, gasification, and bio-methanation conversion technologies, were explored and assessed based on various physical and chemical criteria like energy efficiency, capacity, useful side product, environmental effect, waste material, cost aspect, temperature and the system's long-term utilization from MSW to energy. A comparative analysis was done to verify the superiority of the proposed MCDM model with the Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) model. According to the suggested Picture fuzzy MCDM model, the weight attributions for all seven criteria that determine the technique's output are waste material (0.1602) > temperature (0.1503) > useful side product (0.1456) > environmental effect (0.1370) = capacity (0.1370) > cost aspect (0.1360) > energy efficiency (0.1340). Each technique underwent evaluation and comparison, then ranked according to the proposed MCDM model from most to least preferred. The results of both picture fuzzy Multimoora-based MCDM and TOPSIS models showed that, although other technologies are also effective, as having a high output, the Bio-methanation technology is highly effective in converting MSW to energy with the least environmental damage.