The Lumiar Parish Council was a member of the Sun4All Community of Practice. A case-studyt report was developed by Firefly team members showcasing the sustainable implementation plan for the upscaling of the Telheiras/Lumiar Renewable Energy Community. It is the annex 5 of the report “Sun4All Sustainable Implementation Plans for nine Community of Practice Observers” which is one of the key intellectual resources of the Sun4All project. It is a comprehensive collection of nine Sun4All Sustainable Implementation Plans developed by the expert organizations for the CoP Observer Group members. This Sun4All project deliverable targets local and regional governments, public and private utilities and energy agencies, civil society organisations, social housing associations, energy cooperatives, energy agencies, and other audiences.