Balance

Is the balance what’s owed to bulb ? or what is in credit from my payments

Is the balance what's owed to bulb ? or what is in credit from my payments

Is it positive or negative?

It should say in credit too.

It’s the difference between the cost of the energy they have billed you for and the money you have paid to them. If it has a minus sign in front of it it’s the amount you owe Bulb. If there is no minus sign it’s your credit with Bulb. As customers are expected to pay a month in advance most of them are probably in credit most of the time.