Downdraft energy tower for negative emissions: Analysis on methane removal and other co-benefits

Abstract

The downdraft energy tower is proposed in research as a new technology for green electricity in recent years. In this work, it is analyzed as an emerging greenhouse gas removal technology against climate change that provides multiple co-benefits for the environment, in addition to green electricity. Compared to other negative emission technologies, DET might be able to remove atmospheric methane (CH4) without adding additional equipment, materials or costs. In multiple case studies, the DET offers at least 15% increase in profit thanks to CH4 removal in addition to green electricity generation. © 2023 The Authors. Greenhouse Gases: Science and Technology published by Society of Chemical Industry and John Wiley & Sons Ltd.