OK, I am new to this net metering stuff and won't have my first true-up bill until May, 2017, but my understanding is the same as what drees stated. From everything I've read, the daily minimum charge is just that--DAILY, not monthly or annual. It is calculated monthly based on the number of days that you do not pull any net power from the grid @ $.17/day, and is shown on your bill as a "Minimum charge adjustment." It is compounded monthly and shows as a running balance on your bill, but is only actually charged annually, at your true-up date, which I suppose could make it an "annual charge" semantically, but I don't understand how you can call it a "credit"??? Any credit would come from your excess net production from the year, which might offset the minimum daily charge if you produced enough excess kWh for the year. In the 4 months my system has been operating, I have been charged ~$10 each month, which is carried forward to the next month, and at the end of the year, I expect to owe them ~$120. The way I figure it, I will need to have overproduced 3,000 kWh for the 12-month period credited @ $0.04/kWh to not owe them anything. Am I misunderstanding this net-metering true-up deal?
I'll explain how it all looks on my true up statement and that should clear up how it works.
In April, my statement showed $50.19 under "Minimum Charge Adjustment" on the Net Energy Metering Summary. My true up month was the next month. On this statement under the electric energy charges (it is not in the net energy section) there is a line also called "Minimum Charge Adjustment" and it shows -$50.19. All the minimum charge adjustments were credited back on the true up statement. It wasn't a credit against usage, it was a credit against accumulated minimum charges. I don't come anywhere close to getting a credit for excess production, as I only produce about 75% of my usage from PV, however the EV-TOU2 time of use tariff allows me to build up NEM credits in the summer.
According to the true up statement, I had a total $114 in electricity use for the 12 month period, which was above the minimum charge for the period which was $105 (For 3 months of the period the min charge was only $5/mo, it was raised to $10 in September 2015).
Not sure why the tariff calls it a daily charge, but it does get charged to your account balance monthly when your total electric charges are below the minimum charge for the month.