Waste-to-energy technologies like incineration and gasification can help produce electricity from waste that can't be recycled. A study looked at the environmental impacts of these processes using a method called life cycle assessment. They found that how you account for by-products and landfill benefits can change the results significantly. Different approaches can lead to different conclusions about the environmental impact of generating electricity from waste. It's important to be cautious when comparing studies on waste valorization to ensure accurate results.