Developing low-carbon energy hubs requires coordination and collaboration involving government and various industry players. Success depends on ensuring a critical mass of emission sources; installing new plants for carbon capture, hydrogen and other processes; and ensuring that businesses exist to transport and utilize or store CO2. Different countries and regions need to tailor approaches according to local conditions―for example, government policy, industry concentration, infrastructure availability, distances from emitters to storage sites and sometimes country boundaries. How are different regions tackling these challenges? What learnings from developing these hubs are most transferrable to other regions?