Hi Now Bescom come with Soura Gruha Yojana. It cost 1 KV benchmark (56,000 INR) 40% Direct subscidy. Now actucal cost around 32000. If your monthly bill around 1000 Rs you can invest 32000 and electricity bill almost 11 months free (Some time you will get addtional money from Bescom.
visit www.bescom.org fill the form Registration charge 500 + 18% GST Non Refundable. Make ensure you have atleast 150 SQF of shadow free space (Even Balcany also possible)
Example: In my home I invested for 1KV Grid tied. My overal usage 110 Units per month + Now ather charging. No bill from 2 years.