Howard ... Looks like your system setup and utility company work a bit differently than mine. My meter just measures kWh DELiverd (to me), and kWh RECeived (back to the utility). I'm billed for the DEL amount at one rate, and get a credit for the REC amount (at a lesser rate). My Enphase microinverter system measures and tracks the kWh produced by my solar array. I can do the math using those three numbers to figure my kWh consumed, but, as you did, I hoped that Sense would track those things for me.
It seems to me that adding some psuedo Solar devices that track.those things would be really helpful.
As I see it, the following would work for me:
"Usage" already exists.
"Solar" already exists, and seems fairly close to my production numbers. Today Enphase shows 62.5 kWh produced, whiles Sense shows 60.6 kWh. My best guess is that there is some line/conversion loss (roughly 3%) between the array, and the power reaching the electric panel.
"Solar Out" would be Solar minus Usage (only if Solar is greater that Usage"
"Solar Used" would be Solar minus Solar Out
All seem fairly straight forward to implement, so we can just wait expectantly.to see what happens as Sense matures.
Now I'm just waiting for the system to identify:
GE Hybrid Water Heater
Pool Pump and Heat Pump Heater
Auxiliary Heat in my HVAC system