Operation start of 2015 has what gross mw?
CREATE TABLE table_name_56 (gross_mw VARCHAR, operation_start VARCHAR)
SELECT gross_mw FROM table_name_56 WHERE operation_start = "2015"
### Context: CREATE TABLE table_name_56 (gross_mw VARCHAR, operation_start VARCHAR) ### Question: Operation start of 2015 has what gross mw? ### Answer: SELECT gross_mw FROM table_name_56 WHERE operation_start = "2015"