Since Northern Power & Light service utilizes a program called "Community Distributed Generation", or "CDG," the new summary refers to credit generated by Northern Power & Light as "CDG Credit."
"CDG Credit - Applied to this Bill" is the amount by which your current bill was reduced, and this will always line up with your next bill from Northern Power & Light.
The rest of the summary details both how new credit is being accumulated, as well as how unused credit is carried forward for future use.
Any remaining “Amount Due” on your National Grid bill is still owed to the utility.