I haven't really put any though into this as loadshitting hasn't been an issue... Until it was... My thought process is as follows... 12v LED strips, connected to a battery, perhaps via an arduino connected to a 9v battery just to power the unit. One could connect an RTC board to ensure time is always correct, breaking out to relays for on and off. Lights will run on a 12v battery, perhaps alarm battery. These lights will run at the same time as primary light cycles, however, if power goes out, the arduino will ensure that the 12v strips remain on. May not help the flowering process, but definitely help not to stress the plants too much. Digital timer will still be needed for primary lights so they don't lose time. When power comes back on, the 'sun' will simply come out behind the 'clouds' again Sent from my EVA-L09 using Tapatalk