There’s quite a bit of fuckery with the billing. When I take the dollar amount listed as “Total Charges” and divide it by the total kWh listed under “EA Levy” I get $0.27 per kWh. That includes day rate, lines fees, and all the other easy-to-understand charges.
My day rate is $1.68, and then 40c kwh on peak, 20c off peak, -15c export, but if i do as you did, total bill of $177 divided by 592kwh i get 30c/kwh