To accelerate the transition to a low-carbon economy while exploiting existing infrastructure, hydrogen can be injected to the natural gas network. However, the there are many technical and regulatory gaps that should be closed and adaptations and investments to be made to assure that multi-gas networks across Europe will be able to operate in a reliable and safe way while providing a highly controllable gas quality and required energy demand. Recently, the European Committee for Standardization concluded the impossibility of setting a common limiting value for hydrogen into the European gas infrastructure recommending a case-by-case analysis. In addition to this, there are still uncertainties related to material integrity on pipelines and networks components with regards to a reduced lifetime in presence of hydrogen. Existent results from previous and ongoing projects on the hydrogen readiness of grid components should be summarized in a systematic manner together with the assessment of the existent T&D infrastructure components at European level to provide stakeholders with decision support and risk reduction information to drive future investments and the development of regulations and standards. The SHIMMER project aims to enable a higher integration and safer hydrogen injection management in multi-gas networks by contributing to the knowledge and better understanding of hydrogen projects, their risks, and opportunities. - To map and address European gas T&D infrastructure in relation to materials, components, technology, and their readiness for hydrogen blends - To define methods, tools and technologies for multi-gas network management and quality tracking, including simulation, prediction, and safe management of transients, in view of widespread hydrogen injection in a context of European-wide context -To propose best practice guidelines for handling the safety of hydrogen in the natural gas infrastructure, managing the risks

3D project aims mainly at demonstrating DMXTM CO2 Capture technology in AMF’s Dunkirk (FR) steel mill on an industrial pilot plant (0.5 tCO2/hr.), bringing TRL from 4 to 7, with 76% of requested EU budget (14,8M€). DMXTM will give Europe an edge in cost, environmental- and energy-efficient recovery of CO2. Downstream requirements are fully considered in studies of conditioning, transport and storage in North Sea aquifers. Waste Heat Recovery well combined with DMXTM process will allow reaching unprecedent CO2 Capture cost under 40 €/tCO2. Environmental, societal and stakeholder’s expectations are dealt from the beginning and all-along the project to ensure capability of deploying the CCS cluster on Dunkirk territory. DMXB solvent production will be optimised industrially and environmentally, through LCA. 3D project is based on an EU holistic approach, building on previous an on-going CCS projects where many 3D partners are involved. 2025 full-scale CCS plant of 1 Mt CO2/y will be implemented from end of 3D project which will be an embryo of the future CCS cluster Dunkirk-North Sea 2035 (10 MtCO2/y). It is a major step in the transformation of energy- and CO2-intensive industries such as steel towards EU targets, with opportunities of job creation all along the CO2 CCS chain, notably for Dunkirk region economies and EU storage Hubs. 3D RTD and engineering providers would develop new markets aside from existing Oil & Gas, smoothing environmental and energy-depletion transition. Furthermore, quality of recovered CO2 through DMXTM process is compatible with food-grade markets. The project success relies on of a highly skilled and experienced consortium involving the complete chain of CCS and key transversal skills (LCA, SSH, KPI/TRL/cost assessment). 11 complementary partners from 6 European countries, of 2 academics (ETHZ, DTU), 4 technology providers (AP, GASSCO, IFPEN, UETIKON), 3 engineering companies (AXENS, John Cockerill, BREVIK), 2 end-users (AMF, TotalEnergies OneTech).