Start date: May 2013

End date: January 2017


The objective of the Annex was to reduce the use of energy and emissions of greenhouse gases by the increased implementation of heat pumps in smart grids, by:

  • Generating information for policy makers
  • Developing information for stake holders in the heat pump industry and its supply and consulting chain and for policy makers
  • Getting insight in decision making processes related to heat pumps
  • Increasing the knowledge and information about heat pumps, data and getting existing information available
  • Applying new technologies and identifying the needs for technological development
  • Creating a network of experts
  • Finding synergy with renewable energy production to increase flexibility of the grid

Project manager and participating countries

Austria, France, Germany, the Netherlands (operating agent), South Korea, Switzerland, the United Kingdom, and the United States.


The Annex was structured into the following tasks:

  • Task 1. Market overview, barriers for application
  • Task 2. Modeling calculation and economic models
  • Task 3. Technology
  • Task 4. Application and monitoring
  • Task 5. Communication



The website of Annex 42 can be viewed here


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