I read somewhere a while ago that if I want to switch my SCE TOU-D-4-9PM to TOU-D-Prime, SCE requires that I have to get a panel upgrade to 200 amp service? Can anyone who has switched to Prime, can confirm this? I currently have 100 amp service and to do an upgrade will cost a lot of money since the wire from the street to my panel is only rated for 100 amps.