I agree, EON can supply however I would not recommend them. They told me that they were going to convert all E10 users back to E7 and when I threatened legal action (my all-electric flats would not survive on only E7) they backed down and left E10 in place. They had even converted one of my rented flats to E7 without advising me or the tenants! (They returned and re-fitted an E10 meter) I had so many problems with EON that eventually I shifted to OVO- but only after EON had re-instated E10 meters at the affected properties! I have found OVO a completely different company to deal with– a vast improvement.