CREATE TABLE table_name_74 (net_capacity VARCHAR, gross_capacity VARCHAR, unit VARCHAR)

What was the net capacity with a gross capacity of 1,126 mw, and a Unit of tianwan-4?
SELECT net_capacity FROM table_name_74 WHERE gross_capacity = "1,126 mw" AND unit = "tianwan-4"
SELECT "net_capacity" FROM "table_name_74" WHERE "1,126 mw" = "gross_capacity" AND "tianwan-4" = "unit"