How can I see my balance owed on my National Grid Bill I haven't gotten a bill since March and I have been making payments would like to know how much is owed

You must be on auto pay or the service would be turned off.
you can search the web for national grid by state, then either ( with your account number) look up your history. ( you may register on line to view bills)
if you are paperless you will need to call them using phone number found on web. The name of the person who pays the bill , your phone number and billing address should be enough to get to a service representative.

Fixya is not the national grid we dont have access to your or other company's accounts or billing ,CONTACT national grid online or nearest office for your request