Agricultural residues, forestry byproducts, and organic waste contain lignocellulosic waste, which is mostly cellulose, hemicellulose, and lignin. Multiple industries can sustainably use these abundant materials. Heating organic materials like wood or agricultural waste at high temperatures with little oxygen produces biochar. In agriculture and environmental remediation and as a catalyst, this carbon-rich product improves soil quality and sequesters carbon. Polyhydroxyalkanoates (PHAs) are sustainable biopolymers made by microorganisms, offering an eco-friendly alternative to conventional plastics. They are biodegradable, produced from renewable sources, and find applications in packaging, medical devices, and more, contributing to reduced plastic waste and environmental impact. This chapter investigates how biochar improves bacteria fermentation for increased PHA generation. It discusses how PHAs are more environmentally friendly than plastics and how biochar helps make PHA production more sustainable. Concerning the advantages and disadvantages of scaling up, with the goal of making eco-friendly PHA synthesis utilizing biochar from organic sources easier, it is important to evaluate the economic feasibility, technological challenges, and the potential environmental impacts to ensure the process remains sustainable and scalable for industrial applications.