Totally depends on how much you charge but...simple math if you are charging 100kwh every time
Take your $/kwh x 100 = cost to charge it up!
For example, my local utility charges me $0.14 /kwh during Super Off-Peak, so it would cost me $14.00 to charge roghly 85 kwh (due to losses) and I get around (real world range) 240 miles for $14.00 or so.
It will be cheaper than an ICE. Here in San Diego, the EV-TOU5 rate charges 9 cents per kWh. Using my Nissan Leaf as an example for easy math, I will estimate about 3 miles per kWh, so it coats me about 3 cents per mile in electricity. To compare that to an ICE that gets 25 miles per gallon, with gas now costing $5 per gallon, it costs 20 cents per mile in gas costs. since Lucid is more efficient than a Nissan Leaf, the cost will be less.
Also, If you get a ChargePoint Flex unit, you can pull up your utility on the App and it will populate the rates for whatever time of the day you charge, based on your rate plan. It gives you the costs of each charge as well as historical numbers by month. Attached is a screenshot example. For perspective, We drive about 1400 miles a month on the Leaf (use it for almost all local driving) and our ”fuel“ costs are about $45/ month. If we were to drive our Toyota Sienna for that distance, our gas would run about $280.
I forgot to add that the SDG&E EV-TOU5 rate of 9 cents is for nights (midnight-6 am) and weekends ( Midnight -2p). And has a $16 monthly base fee. If you charge from 4-9p, you are absolutely punished with a rate of almost 55 cents per kWh. BUT… in perspective, my Leaf, at peak rates would cost about 19 cents per mile (55/3) which is still less than the Sienna for gas. Level 3 chargers generally run between 35 to 55 cents per kW.