Carnegie Clean Energy (ASX:CCE) signed a deed of variation to extend the maturity date of the AU$2.5 million loan agreement with Ballamena ATF Ellann Finance Unit Trust to June 30, 2027, according to a Thursday filing with the Australian bourse.

The funds have been used by the company's subsidiaries for procurement expenses related to the Achieve program's deployment of the CETO wave-energy technology in the Basque Country, Spain, the filing said.

Shares rose nearly 3% in midday trade Thursday.