This report is the final report of a Subtask of the Task 32 “Advanced Storage Concepts for solar and low energy buildings” of the Solar Heating and Cooling Programme of the International Energy Agency. As a final report of a Subtask it has two aims: 1. it summarizes all the works conducted in the Subtask during the period of the Task (June 2003 – December 2007) highlighting some important results that the participants in the Subtask reached and it refers to all the detailed documents that have been produced by the Subtask and Task 32, 2. it presents some hints on the management of an IEA Subtask in order to improve future collaborative works within this framework In Subtask B, major achievements have been: 1. Identification of potentially suitable materials for long term storage of solar heat and publication of material properties. 2. Documentation of State of the Art in chemical and sorption storage in Task 32 Handbook. 3. Development of new concepts of short and long term storage of solar heat to prototype stage with lab and field tests. 4. Development of models for simulation of chemical and sorption storage. 5. Simulation of three systems with long term chemical or sorption storage with the Task 32 boundary conditions (reports for only two of these were completed). 6. Support in the commercialisation of a chemical heat pump with short term thermal storage for solar heating and cooling applications. 7. Input for the storage part of the strategic research agenda of the European Solar Thermal Technology Platform, further refining the compact heat storage R&D questions that should be tackled on an international level. IEA SHC – Task 32 – Advanced storage concepts