235kWh/mo sounds low to me. Single person (me) + cat, one computer on 24x7 (no monitor), oil heat, outside of AC season ~400kWh/mo. I did have an electric dryer and stove so that adds to the bill a bit, but not a huge amount. 235kWh/mo = ~7.8kWh/day = .326kWh/hr
Perhaps possible with all CF lighting and no electric appliances other than a refrigerator. If the 235kWh baseline is derived from your actual usage it might be based on a running average plus an allowance of perhaps 20% of the average.
I seem to recall that you have some decent sized welders, so based on my Syncrowave 250 specs of 11.4kW at 250A rated output and your comment about only being home on weekends:
1,000kWh / 11.4kW = 87.7hrs arc time. @ 40% rated duty cycle = 219.3hrs welding time / 8 weekend days = 27.41hrs/day welding.Clearly there are some reality issues with those calculations. Now you indicate that you had other folks around that accounted for at least part of the 1,000kWh extra. If you can isolated bills that only show the apparent extra welding use then you can make the same calculations and see if it makes any sense.
The $/kWh may vary relative to that baseline rate, but kWh used will be constant. Track what you are really using and where it is going.
Pete C.