I think it varies between suppliers, some such as ovo are pretty clued up on e10 just from getting a quote from them myself, Isupply are one that wouldn’t be able to help as someone has mentioned this in here before, I couldn’t comment on others but yes those offering e10 tariffs are the ones that would offer you full support for your meter if you had any problems. I know ovo and sse have lowered their prices recently on a one year fix, SSE one year fixed v11 and ovo better energy online if that’s any use to anyone looking for a new provider? Good luck with your search AA keep us posted on how you get on and if you need any help just drop a message in here ????