This photo series is from June 26, 2013 @ 5:30PM. The dial emulator is pointing to the left which means that our solar modules are pushing power back to FirstEnergy.
Code 01 = The "Net" kWh that I am billed for
Code 04 = The kWh pulled from the utility
Code 40 = The kWh that has pushed back to the utility
This style meter makes it easy for meter technician and customer alike to see the exchange of kWh.
Code 04 - Code 40 = Code 01
or, in our example here....
4786 kWh - 2006 kWh = 2779 kWh
Code 01 is really the only number used for determining how much you owe. If the value is greater than the prior month then you owe money. Likewise, if the number is smaller than the previous month you have gained credits and you only owe for the base charge.
It's important to note that the kWh pushed back to the utility (Code 40) is not synonymous with the total power produced by our solar PV system. Some of the power that we produce is gobbled up immediately in our house - as soon as it is generated, before it even gets to the utility meter.. The leftover solar generation (the excess) is what gets pushed back to the utility.