CREATE TABLE table_13309 ("Entities" TEXT, "Country" TEXT, "Supply point" TEXT, "Voltage  ( kV ) " FLOAT, "Power  ( MW ) " FLOAT)

How much Voltage (kV) has a Country of argentina, and a Power (MW) larger than 30, and a Supply point of yacyret ?
SELECT COUNT("Voltage (kV)") FROM table_13309 WHERE "Country" = 'argentina' AND "Power (MW)" > '30' AND "Supply point" = 'yacyretá'
SELECT COUNT("Voltage (kV)") FROM "table_13309" WHERE "Country" = 'argentina' AND "Power (MW)" > '30' AND "Supply point" = 'yacyretá'