AOBC: Alternative On Bill Credit rate based on the National Grid Basic Service Supply rate. Rate to cover costs of solar program in MA. This is based on the total usage for the month. We take your generation and add it to your net usage to determine how much power you consumed for the month. The difference between how much electricity you generate and use. A negative Total Usage number means that you generated more electricity than you used for that billing period.Unallocated AOBC's for the bill period
