Power Ledger has two types of tokens, POWR and Sparkz.
POWR tokens allow the Application Hosts and their consumers to gain access to the P2P trading features and other Power Ledger applications.
Sparkz tokens, the "low level" token, are specifically limited to representing the tokenized value of a unit of electricity in varying markets around the world.
The POWR token is the access token, like a software license, that grants ability for Application Hosts to transact on the Platform, through trading POWR tokens for Sparkz.
With Power Ledger, there is No avenue for commission from 3rd party involvement, and this makes the system fairer for all involved, click here to read more about Power Ledger P2P Energy Tradingon there site!
As the system technology evolves there is a greater roll-out of participants.