In order to move towards a renewable energy system in the Netherlands, an increasing capacity of renewables has to be connected to the electricity grid (e-grid). Reinforcement of this grid costs time also because of the immanent electrotechnical workforce scarcity in the country. Therefore, Dutch electricity DSOs already face and foresee rapidly growing (localised) challenges in providing grid connections (in time) for connecting local renewable energy capacities. In this study it was investigated whether and to what extent local or regional P2G systems may alleviate congestion in the e-grid in some critical areas by introducing green hydrogen produced via P2G – blended or otherwise – in decentral industrial clusters and/or the mobility sector in particular areas. The focus in the study on decentralized (so-called cluster 6) industry and local mobility as potential green hydrogen consumers (rather than the five main industrial clusters in the country) was chosen because, unlike the main industrial clusters, the more local industry and mobility hydrogen uptake is typically not easily connected to the foreseen national hydrogen backbone. Therefore, the regional transmission gas line (RTL) will have to act as the main potential hydrogen grid connection for these industries. To identify the country’s most suited areas for establishing such potential local hydrogen connections (and hydrogen blending), four location criteria have been combined: the severity of supply side driven e-grid congestion; the presence of local industry with a grid connection decoupled from the built environment/public distribution system (because such a connection would complicate blending); the proximity to (future) renewable energy production sites; and the assumed little industries’ decarbonization alternatives. Based on these criteria, some dozen potential ‘hydrogen blending regions’ were identified throughout the Netherlands, each with multiple possible local blending sites. Modelling of the supply side economics of P2G congestion ...