An MMRDA official said the original plan was to have separate depots for both lines before starting the services. However, as land for the depot for line 7 could not be finalised, it was decided to use the depot for line 2A for line 7 also
The depot at Charkop, which is used to park Metro rakes of both lines 2A and 7, which were inaugurated recently, has already reached its limit and if more rakes are used on the line, a separate depot will be necessary, according to MMRDA. The depot has space to park 22 rakes, which is also the current number of rakes running on both lines 2A and 7
https://indianexpress.com/article/cities/mumbai/charkop-full-second-depot-essential-if-more-rakes-are-added-to-new-metro-lines-8418725/
Source: The Indian Express
