CREATE TABLE table_22766 ("Entities" TEXT, "Country" TEXT, "Supply point" TEXT, "Voltage  ( kV ) " FLOAT, "Power  ( MW ) " FLOAT)

What are the electric companies drawing power from Itaipu?
SELECT "Entities" FROM table_22766 WHERE "Supply point" = 'Itaipu'
SELECT "Entities" FROM "table_22766" WHERE "Supply point" = 'Itaipu'