Ergon grid tied

Looking for information regarding possibilities of using my new off grid Multiplus inverters, trackers ect system to grid tie to Ergon for battery rebate.

Is there any system design available to achieve this.

Read using an AC coupled Fronius inverter may meet the requirements.

Not up with the current technology but lived off grid elsewhere for past 26 years.

So if viable just need to be pointed in the right direction.

Cheers