CREATE TABLE table_name_44 (operation_start VARCHAR, gross_mw VARCHAR, unit VARCHAR)

Gross MW of 220, and a Unit of kakrapar 1 involves what operation start?
SELECT operation_start FROM table_name_44 WHERE gross_mw = "220" AND unit = "kakrapar 1"
SELECT "operation_start" FROM "table_name_44" WHERE "220" = "gross_mw" AND "kakrapar 1" = "unit"