The general objective of LightBEE is to overcome the barriers related to the design and manufacturing of battery carrier units for battery electric vehicles in the transport sector, which prevents the wider market uptake for which there is a growing market. For that purpose, advancedmanufacturing mainly based on different joining technologies will be developed to obtain higher strength, lightweight components. An FSW pilot facility will be developed. It will be possible to use these guidelines in any industry. This will be accomplished by establishing a chain consisting of: 1. Design for manufacturability, based on the manufacturing constraints of the electric vehicle battery carrier systems and the joining processes. 2. Design for crashworthiness, based on the topological optimisation and structural integrity of layered multi-material components. 3. Design for lightweight, by considering the combination of different materials, for example high strength aluminium alloys (e.g. alloys from the 6000- and 7000 series) and composite materials, by using the capabilities of advanced joining processes able to join dissimilar materials. 4. Design for sustainability, by using by using environmentally friendly joining technologies such as FSW and FSSW. A consortium ranging from material processing and manufacturing companies, machine tool suppliers, automotive suppliers and research instutes has been created