This book critically analyses the availability of environmental counterclaims in investment arbitration presented by the respondent host state against the claimant investor. It starts from the premise that the conflicting relation between investment law and environmental protection cannot always be avoided. Yet, the instrument of environmental counterclaims in investment arbitration might alleviate such relation. Throughout its chapters, this book addresses the questions about the societal and practical relevance of seeking redress for environmental damage in investment arbitration, the functioning of such instrument both in contract-based and treaty-based investment arbitration, the suitability of arbitral tribunals to rule upon environmental issues, and the kind of environmental damages that could be redressed. Most importantly, by deconstructing the requirements of jurisdiction, connection between main claim and counterclaim, and cause of action, this book provides the tools for there-conceptualisation of the instrument of counterclaims with the hope of harnessing its utility to achieve appropriate redress for environmental damages caused by foreign investors.

Andrés Eduardo Alvarado-Garzón is an international arbitration lawyer in Frankfurt am Main. He studied law at the Universidad Externado de Colombia, obtained his Master of Laws degree (LL.M) from the Europa-Institut of Saarland University (Germany) and a doctorate degree (PhD) (summa cum laude) from Saarland University (Germany). During his PhD, he was a research associate specialising in international investment and trade law, and international dispute resolution at the university and coached the FDI International Arbitration Moot team. Andrés interned at the United Nations Commission on International Trade Law (UNCITRAL) as well as at the International Centre for Settlement of Investment Disputes (ICSID), and he was a visiting scholar at the Max Planck Institute Luxembourg for Procedural Law. Currently, he works with the Disputes Resolution team of Herbert Smith Freehills LLP in Frankfurt am Main, Germany.

Introduction.- The Contextualisation of Environmental Counterclaims A Comparative Perspective.- Jurisdiction over Environmental Counterclaims The Puzzle of Consent.- The Assessment of the Connection Requirement for Environmental Counterclaims.- Searching a Cause of Action for Environmental Counterclaims.- Conclusions.