"...and not a distinct Energeia and Ousia."
NO, NO, NO! Energia is GOD, Ousia, ONE OUSIA, is God! Here's a link to another article; not exactly how I'd put it, but accurate after a fashion and perhaps worth the read:
"http://encyclopedia.thefreedictionary.com/Energies%20of%20God"
In the meantime, Pelikan is a good read.
So what is the distinction, if both are God? Sorry, I am still confused, but I'll read your link.
You must be patient as your forefathers with your slower Western brothers...
Regards