Atlantica Sustainable Infrastructure plc has priced its offering of the $400,000,000 in aggregate principal amount of green senior notes due 2028, guaranteed by certain subsidiaries of Atlantica. The Notes will accrue an annual interest of 4.125% payable semi-annually. The closing and disbursement of funds is expected to take place on May 18, 2021, subject to customary conditions. Atlantica will use the proceeds to (i) fully prepay the Note Issuance Facility 2019, including principal of $331.9 million and accrued and unpaid interest and prepayment costs of $6.6 million; and (ii) finance the acquisition of eligible assets which meet the eligibility criteria in accordance with Atlantica's Green Finance Framework. The Notes Issuance Facility 2019 being prepaid out of the proceeds of this Offering was originally used to refinance indebtedness the company had incurred to fund the acquisition of Eligible Assets in accordance with the Framework. The Green Notes and related guarantees are being offered only to qualified institutional buyers pursuant to Rule 144A under the Securities Act of 1933, and non-U.S. persons in accordance with Regulation S under the Securities Act. The Green Notes and related guarantees have not been registered under the Securities Act or the securities laws of any other jurisdiction and may not be offered or sold in the United States or to U.S. persons absent registration or an applicable exemption from the registration requirements. This notice is issued pursuant to Rule 135c under the Securities Act, and does not constitute an offer to sell, nor a solicitation for an offer to purchase, the Green Notes.