AEM SpA’s long- and short-term credit ratings were lowered by global rating agency Standard & Poor’s, following the closing of the takeover of Edison SpA.

The long- and short-term corporate credit ratings on the Milan, Itaky-based utility were lowered to 'BBB' and 'A-2', respectively, from 'A' and 'A-1', and removed the ratings from CreditWatch, where they had been placed with negative...