So I had a wattmeter on the printer during a number of larger ABS-prints in my FT5.
Bed was at 110°C, Hot end at 240°C printing thick layers (width 0,72mm and 0,4mm thick) with a Volcano.
Consumption on average 100W per h.
Meaning 10 hours printing is 1kWh.
Multiply that with your local electricity cost per kWh ...
Power when idle : 22W with Raspberry
remark : my printer has a 3mm thick polycarbonate enclosure