Re: ¿Que empresas españolas son utilities?
Dos de las empresas que has puesto ahí cotizan en España, pero no son españolas. Endesa es italiana, como es la otra filial de Enel, Enel Greenpower.
A public utility (usually just utility) is an organization that maintains the infrastructure for a public service (often also providing a service using that infrastructure). Public utilities are subject to forms of public control and regulation ranging from local community-based groups to state-wide government monopolies.
The term utilities can also refer to the set of services provided by these organizations consumed by the public: electricity, natural gas, water, and sewage. Telephone services may occasionally be included within the definition.
En mi opinión hay más utilities cotizando en España. Están por ejemplo Enersis, Endesa Chile, Electrobras.