CREATE TABLE table_56454 ("Power Plant" TEXT, "Producer" TEXT, "Location" TEXT, "State" TEXT, "Total Capacity  ( MWe ) " FLOAT)

What company is known as the producer at the kethanur location?
SELECT "Producer" FROM table_56454 WHERE "Location" = 'kethanur'
SELECT "Producer" FROM "table_56454" WHERE "Location" = 'kethanur'