Transparency and Auditability
When we buy energy, we sometimes want to know characteristics of that energy -- where it came from, the type or other attributes of the source. The information is known to the generator, and to the first level purchaser, but if we buy "green power" how do we know we're getting our money's worth?
The transparency goals of OASIS Blue address this issue at a high level.
What attributes/characteristics of electrical power do you care about?