Have you checked back since they changed the options to include the higher power inverters on the Delta order page? It's kind of squishy language, but it sounds like a 'professional installer' can call Ford and arrange things or you can register on the AEE/Delta site and complete the purchase of the items you need. It's hard to tell what they're trying to say.
AEE Express- The online store of AEE Solar, wholesale distributor of solar products and equipment - Sunrun Home Integration System (required to enable Ford Intelligent Backup Power)
<img alt= class=wp-image-4147 height=38 loading=lazy sizes=(max-width: 194px) 100vw, 194px src=https://www.aeesolar.com/wp-content/uploads/2022/10/Sunrun-Logo-Dark-Blue-1024x206.png srcset=https://www.aeesolar.com/wp-content/uploads/2022/10/Sunrun-Logo-Dark-Blue-1024x206.png 1024w...