Is full power backup just a myth in Noida Extension?

Honestly, I thought power backup was standard for everything in new projects. Deepak Green Residency mein dekh raha tha, they're saying full flat backup nahi hai, sirf common areas aur kuch points. Yeh toh bilkul unexpected tha mere liye. Kya yeh normal hai Noida Extension mein? Aur water supply ka kya scene hai? Tanker dependency kitni rehti hai yahan? Maintenance charges mein yeh sab cover hota hai ya extra costs hain? Bohot confused hoon first-time buyer hone ke naate.