Introduction: environmental regulation in the process of systemic transformation. Part 1 Environmental regulation in Poland and its international context: the organisational structure of environmental protection in Poland, Miroslaw Sobolewski, Ewa Taylor; international obligations in Environmental Law and practice in Poland - factors influencing implementation, Brian Slocock; input oriented environment policy as an alternative to end-of-pipe policy - a future agenda for Poland, Maria J. Welfens; environmental liabilities in the Polish privatisation process, Piotr Jasinski; diffusion of cleaner technologies in the Polish power sector, Elisabeth Favrat; Greenpeace's toxic campaign in Poland and its impact on Polish regulation, Iza Kruszewska. Part 3 Case studies: energy use, air pollution, and environmental policy in Krakow, Seabron Adamson et al; systemic transformation and environmental regulation in Poland - the case of the Opole Power Station, Leslaw Adamczyk, Tim Keyworth; the saline water problem in upper Silesia, Helen Lawton Smith, Miroslaw Sobolewski. Part 4 Lessons from other countries: regional independence or centralisation - problems of transformation in the electricity supply industry in Russia, Petra Opitz, Wolfgang Pfaffenberger; lessons from the UK for environmental regulation and policy - the case of air quality management, J.W.S. Longhurst et al.