RT Journal Article T1 Are big mergers welfare enhancing when there is environmental externality? A1 Fikru, Mahelet G. A1 Gautier, Luis K1 Impuestos ambientales K1 Sociedades - Fusión K1 Sociedades - Aspectos ambientales AB Previous studies find that horizontal merger deals that consolidate a majority of firms in the market are likely to reduce welfare. This study provides an in-depth analysis of the relationship between the size of a merger and welfare in industries with environmental externality. In an international framework we show that in a market where more than 50% of firms have merged, a further increase in the size of the merger could increase or decrease welfare depending on two previously unexplored factors: (i) a given threshold of size of a merger and (ii) the pollution intensity of firms. Furthermore, we show that the relationship between welfare and size of merger can be affected by an exogenous change in emission tax at home and in a foreign country. PB Elsevier YR 2020 FD 2020 LK https://hdl.handle.net/10630/31837 UL https://hdl.handle.net/10630/31837 LA eng NO Mahelet G. Fikru, Luis Gautier, Are big mergers welfare enhancing when there is environmental externality?, Energy Economics, Volume 87, 2020, 104718, ISSN 0140-9883, https://doi.org/10.1016/j.eneco.2020.104718 NO Política de acceso abierto tomada de: https://v2.sherpa.ac.uk/id/publication/15558 DS RIUMA. Repositorio Institucional de la Universidad de Málaga RD 22 ene 2026