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. 1Q21 2Q21 3Q21 4Q21 2021 1Q22 2Q22 3Q22 4Q22 2022 1Q23 Revenue 268,178 342,997 329,244 271,331 1,211,749 247,452 307,832 303,121 243,624 1,102,029 242,509 Adjusted
EBITDA 171,249 232,985 229,846 190,307 824,388 173,626 228,678 228,336 166,459 797,100 174,204 Atlantica’s pro-rata share of EBITDA from unconsolidated
affiliates (3,298) (4,295) (8,451) (15,013) (31,057) (14,202) (15,988) (7,387) (8,192) (45,769) (11,796) Non-monetary items (6,834) 8,625 33,675 20,346 55,809 10,413 10,940 10,839 (4,196) 27,996 649 Accounting
provision for electricity market prices in Spain (659) 11,643 41,582 24,489 77,055 7,141 10,585 10,507 (2,980) 25,253 (1,153) Difference between billings and revenue in assets accounted for as concessional financial
assets 8,501 11,659 6,771 11,959 38,890 18,169 15,050 14,978 13,434 61,630 16,441 Income from cash grants in the
US (14,678) (14,678) (14,678) (14,678) (58,711) (14,897) (14,695) (14,645) (14,650) (58,888) (14,639) Other non-monetary items - - - (1,424) (1,424) - - - - - - Maintenance
Capex (3,278) (1,098) (246) (13,100) (17,722) (2,844) (3,614) (7,283) (4,847) (18,588) (7,630) Dividends from unconsolidated affiliates 8,799 4,431 11,385 10,268 34,883 31,870 11,921 12,411 11,493 67,695 12,401 Net
interest and income tax paid (30,872) (132,857) (45,301) (133,234) (342,263) (16,546) (112,705) (32,885) (115,148) (277,284) (30,179) Changes in other assets and
liabilities 35,459 (1,699) (11,873) 21,806 43,696 (5,588) 6,415 52,186 49,885 102,896 (92,980) Deposits into/withdrawals from debt service
accounts1 (29,639) 17,229 (8,456) 23,595 2,729 11,805 8,020 (20,503) 33,696 33,018 9,820 Change in non-restricted cash at project
companies1 (71,162) 47,730 (89,947) 115,588 2,209 (103,116) 51,501 (135,718) 125,662 (61,672) 43,114 Dividends paid to non-controlling
interests (4,215) (7,395) (11,717) (4,807) (28,134) (6,221) (9,800) (10,421) (12,767) (39,209) (6,011) Principal amortization of indebtedness net of new indebtedness at
projects (14,972) (104,999) (40,336) (158,684) (318,991) (24,789) (112,427) (27,912) (183,183) (348,311) (30,543) Cash Available For Distribution
(CAFD) 51,237 58,657 58,580 57,073 225,547 54,407 62,941 61,662 58,862 237,872 61,049 Dividends declared2 47,643 47,807 48,493 49,479 193,422 50,202 51,332 51,645 51,645 204,824 51,688 # of
shares3 110,797,738 111,178,846 111,477,263 112,451,438 114,095,845 115,352,085 116,055,126 116,055,126 116,153,273 DPS (in $ per share) 0.43 0.43 0.435 0.44 1.735 0.44 0.445 0.445 0.445 1.775 0.445 Key
Financials US$ in thousands