Landfills produce gases that harm the environment, but if we capture and use these gases, we can reduce their impact. Landfill gas (LFG) is a potent greenhouse gas, but when burned, its harmful effects are lessened. By recovering LFG, we can create energy for various purposes and make money from it. This guidance note offers practical advice for projects involving landfilling waste, especially those focusing on LFG recovery and creating better landfills.