The main idea behind this project is to refine and elaborate economic and environmental accounting principles as discussed in the London Group and consolidated in the future SEEA 2012, to test them in practical data gathering, to troubleshoot and refine approaches, and show added value of having such harmonized data available via case studies. This will be done in priority areas mentioned in the call, i.e. waste and resources, water, forest and climate change / Kyoto accounting. In this, the project will include work and experiences from major previous projects focused on developing harmonized data sets for integrated economic and environmental accounting (most notably EXIOPOL, FORWAST, a series of Eurostat projects in Environment Accounting, and to a lesser extent EU KLEMS and WIOD). Where possible data gathered in the project will be consolidated in and enrich such existing databases (most notably the EXIOPOL and FORWAST databases). The project will be executed by a mix of National Statistical Institutes and top research institutes in this field Europe, of whom the majority was involved already in EXIOPOL, FORWAST and various EUROSTAT projects setting up environmental and economic accounts, or have dedicated expertise on key domain areas. The project has made special provisions for further engagement of (European) participants in the London Group.