Anychances you will add/Subtract the power usage of the cards from the profit per day calculations , So we only mine the coin which is best possible .
Like Zcoin (lyra2z algo) uses a lot less power then other algos .
Anyways after about 4-8 restarts due to power failure the power shell starts give red color errors on start and after 15 + it doesn't mine anymore just give error only
This happened to me 2-3 times before this ( happens on multipool miner too ) , Not a big problem though just copy the stats and start.bat to new extracted folder and start