The environment is increasingly at risk due to the massive volumes of plastic waste generated, which have a negative influence on the ecosystem. One of the primary victims of this issue is the maritime environment. The amount of plastic waste produced worldwide is rising at a rate of about 3.5 MMT each year. Waste plastics composed of LDPE, HDPE, PVC, PS, and PET will amount to 25,000 MMT by 2040 if the current trend continues. Therefore, all researchers should concentrate on different ways to get rid of waste plastics and turn them into something useful. These devices are garbage-to-energy devices that physically turn waste into more useful forms, like biofuel and other industrially important chemicals like bioethanol, biobutanol, biogas, biohythane, CNG, syngas tar, ash, coke, char, and gas through various processes like combustion, pyrolysis, gasification, or biological treatments. Making use of these wastes would help preserve our ecosystem in addition to providing a sustainable supply of chemicals and fuels. Numerous facets of using waste materials to generate clean, renewable energy for society’s sustainable growth are crucial in the current plastic waste management, and they require quick attention.