ROME (Reuters) -Italy's Treasury said on Wednesday it had launched an accelerated bookbuilding procedure to sell shares in Eni equivalent to about 2.8% of the energy group.

Rome said in a statement that Goldman Sachs International, Jefferies and UBS Europe SE are joint global coordinators for the accelerated bookbuilding procedure, which involves offering shares in a limited time period.

The share sale is part of Rome's plan to raise almost 1% of gross domestic product (GDP) from asset sales through 2027 to keep in check its massive public debt.

At Wednesday's market price, 2.8% of Eni has a value of 1.39 billion euros ($1.51 billion).

As part of the deal, Rome committed not to sell more Eni shares on the market for 90 days without consent of the global coordinators, the Treasury said.

Italy's debt, the second-largest in the euro zone as a proportion of output and under close scrutiny by rating agencies, will follow a rising trend towards 140% of GDP through 2026, according to the latest Treasury forecasts unveiled in April.

($1 = 0.9193 euros)

(Reporting by Giuseppe Fonte and Francesca Landini, editing by Gavin Jones and Rod Nickel)