Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_23958917_1 ( stacks VARCHAR, unit_capacity__2009_ VARCHAR )

### Question ###
Name the number of stacks for 1 & 2 235 mw 3 & 4 88.2 mw

### Accurate SQL ###

SELECT COUNT(stacks) FROM table_23958917_1 WHERE unit_capacity__2009_ = "1 & 2 235 MW 3 & 4 88.2 MW"