This COST Action tackles the challenges that prevent the HTS mass penetration in the electrical system, as concerns related to costs and uncertainty about cryogenics’ reliability, and the idea that only highly skilled professionals will be able to operate the latter. Other causes relate to a lack of systematic knowledge about the design of HTS systems for the grid, and on how to simulate their performance using standard software packages. There is also a general unawareness about these materials, particularly regarding the reliability of the associated technologies.