HISTORICAL FINANCIAL REVIEW Key Financials by Quarter (1/2) “Deposits into/ withdrawals from restricted accounts” and
“Change in non-restricted cash at project level” are calculated on a constant currency basis to reflect actual cash movements isolated from the impact of variations generated by foreign exchange changes during the period. Prior periods
have been recalculated to conform to this presentation. Dividends are paid to shareholders in the quarter after they are declared. (3) Number of shares outstanding on the record date corresponding to each dividend, except the shares
issued under the ATM program between the dividend declaration date and the dividend record date, as applicable. (4) Excludes decreases in project cash allocated to investments in assets under development and
construction. 1Q22 2Q22 3Q22 4Q22 2022 1Q23 2Q23 3Q23 4Q23 2023 1Q24 Revenue 247,452 307,832 303,121 243,624 1,102,029 242,509 312,110 303,964 241,311 1,099,894 242,933 Adjusted
EBITDA 173,626 228,678 228,336 166,459 797,100 174,204 229,624 223,454 167,640 794,922 164,219 Atlantica’s pro-rata share of EBITDA from unconsolidated
affiliates (14,202) (15,988) (7,387) (8,192) (45,769) (11,796) (7,755) (5,726) (9,370) (34,647) (12,514) Non-monetary items 10,413 10,940 10,839 (4,196) 27,996 649 (2,384) 9,973 (11,357) (3,119) (17,984)
Accounting provision for electricity market prices in Spain 7,141 10,585 10,507 (2,980) 25,253 (1,153) (4,460) 9,503 (7,385) (3,494) (13,098) Difference between billings and revenue in assets accounted for as concessional
financial assets 18,169 15,050 14,978 13,434 61,630 16,441 16,695 15,099 10,657 58,892 9,662 Income from cash grants in the
US (14,897) (14,695) (14,645) (14,650) (58,888) (14,639) (14,619) (14,629) (14,629) (58,516) (14,548) Maintenance
Capex (2,844) (3,614) (7,283) (4,847) (18,588) (7,630) (12,041) (5,067) (3,191) (27,929) (2,391) Dividends from unconsolidated
affiliates 31,870 11,921 12,411 11,493 67,695 12,401 3,063 13,416 5,449 34,329 14,922 Net interest and income tax
paid (16,546) (112,705) (32,885) (115,148) (277,284) (30,179) (108,666) (21,059) (112,805) (272,708) (26,738) Changes in other assets and
liabilities (5,588) 6,415 52,186 49,885 102,896 (92,980) (8,295) (11,516) 20,054 (92,738) (39,371) Deposits into/withdrawals from restricted
accounts1 11,805 8,020 (20,503) 33,696 33,018 9,820 11,418 (8,813) 35,192 47,617 (7,424) Change in non-restricted cash at project
companies1,4 (103,116) 51,501 (135,718) 125,662 (61,672) 43,114 73,659 (98,297) 107,848 126,325 8,639 Dividends paid to non-controlling
interests (6,221) (9,800) (10,421) (12,767) (39,209) (6,011) (11,180) (8,568) (5,674) (31,433) (5,558) Principal amortization of indebtedness net of new indebtedness at
projects (24,789) (112,427) (27,912) (183,183) (348,311) (30,543) (103,918) (28,208) (142,211) (304,880) (24,879) Cash Available For Distribution
(CAFD) 54,407 62,941 61,662 58,862 237,872 61,049 63,525 59,589 51,577 235,740 50,921 Dividends declared2 50,202 51,332 51,645 51,645 204,824 51,688 51,688 51,691 51,691 206,758 51,691 # of
shares3 114,095,845 115,352,085 116,055,126 116,055,126 116,153,273 116,153,273 116,159,054 116,159,054 116,159,054 DPS (in $ per share) 0.44 0.445 0.445 0.445 1.775 0.445 0.445 0.445 0.445 1.780 0.445 Key
Financials US$ in thousands