ENAIRE is the State-owned, main ANSP in Spain, and ranks fourth in Europe in terms of annual volume of air traffic served. ENAIRE operates a very complex ATM system, and now intends to expand its portfolio of services to include U-Space, the European version of UTM. Towards this goal a basic, initial prototype tool is now being developed, covering some of future U-Space set of services. ENAIRE is also studying several other options to acquire or develop its future UTM system.