Supertech Aadri power backup: What's the real deal?

Supertech Aadri mein investment ka plan hai, but power backup ka scene samajh nahi aa raha. Builders toh full backup bolte hain, par kya woh sirf common areas tak hota hai? Investors ke liye tenant attraction important hai, unko full flat backup chahiye. Ya maintenance charges mein yeh hidden cost hota hai? Kya experience hai logon ka?