On August 1, 2018 Standard & Poor’s has assigned a “BBB” long-term credit rating (stable outlook) to Acquirente Unico (AU) SpA.
On October 30, 2018 Standard & Poor’s has confirmed a “BBB” long-term credit rating (negative outlook) to Acquirente Unico (AU) SpA.
On July 26, 2019 Standard & Poor’s has confirmed a “BBB” long-term credit rating (negative outlook) to Acquirente Unico (AU) SpA.
On July 24, 2020 Standard & Poor’s has confirmed a “BBB” long-term credit rating (negative outlook) to Acquirente Unico (AU) SpA.
On October 26, 2020 Standard & Poor’s has confirmed a “BBB” long-term credit rating (stable outlook) to Acquirente Unico (AU) SpA.
On July 21, 2021 Standard & Poor’s has confirmed a “BBB” long-term credit rating (stable outlook) to Acquirente Unico (AU) SpA.
On October 22, 2021 Standard & Poor’s has confirmed a “BBB” long-term credit rating (positive outlook) to Acquirente Unico (AU) SpA.
On July 21, 2022 Standard & Poor’s has confirmed a “BBB” long-term credit rating (positive outlook) to Acquirente Unico (AU) SpA.
On July 28, 2022 Standard & Poor’s has confirmed a “BBB” long-term credit rating (stable outlook) to Acquirente Unico (AU) SpA.
On July 24, 2023 Standard & Poor’s has confirmed a “BBB” long-term credit rating (stable outlook) to Acquirente Unico (AU) SpA.
On July 24, 2024 Standard & Poor’s has confirmed a “BBB” long-term credit rating (stable outlook) to Acquirente Unico (AU) SpA.
On April 16, 2025 Standard & Poor’s has upgraded a “BBB+” long-term credit rating (stable outlook) to Acquirente Unico (AU) SpA.
The rating is equalized with long term sovereign rating on Italy.
Standard & Poor’s believes that AU plays a critical role for the Italian government thanks to its dual mission as centralized purchaser of electricity and manager of Italy's strategic oil reserves through its operational unit OCSIT (Organismo Centrale di Stoccaggio Italiano).
In addition, according to Standard & Poor’s, AU benefits from a strong legal status that ensures the financial balance of all its operating activities.
Standard & Poor’s considers AU to be a government-related entity (GRE), and believes there is an almost certain likelihood that the Italian government would provide timely and sufficient extraordinary support to Acquirente Unico in the event of financial distress.