Hi!
OpenID Federation is not yet supported, but that doesn't mean it cannot be. We are very open to adding new features requested from customers, so if that's something that is critical for you, please reach out to us on sales@energylogserver.com and we'll do estimation of how much work is needed to create that feature for you.
Sometimes new features are very simple to do, sometimes they are much more complicated. We run all of them with our devs and get back to customers with feedback on that.