Every week I would estimate the electrical usage and forecast my expenses for the month. I would measure each rigs electrical consumption and time in operation. I would then determine how many watts were in use and calculate total kilowatts the machines would use for the month.
Below is a sample of GPU miner calculations
| Rig | Description | Count of GPUs | Total Hash | Total Watts | Kwatts | Watts Per GPU | Watts per MH |
| R1M1 | RX570’s | 7 | 191 | 930 | 22.32 | 133 | 4.87 |
| R1M2 | RX480’s | 7 | 188 | 1000 | 24 | 143 | 5.32 |
| R1M3 | RX580’s | 7 | 204 | 1111 | 26.664 | 159 | 5.45 |
Below is a sample for Asic miner calculations
| Rig | Description | Total Hash | Total Watts | Kwatts | |
| R4M1 | S9 14 T | 14 | 1267 | 30.408 | |
| R4M2 | S9 14 T | 14 | 1267 | 30.408 | |
| R4M3 | S9 14 T | 14 | 1267 | 30.408 |
I would estimate total Kilowatt hours for a 30 day period. My calculations would include all electrical components in the warehouse (miners + fans + lights + etc.).
Then I would apply the total Kilowatt hours to the electric companies sliding scale to determine how much my electric bill would be for the month.
Below is a sample of the sliding scale from the electric company
| Total KW Per Month | Electrical Costs | Scale |
| 3,000.0 | $ 0.115998 | 1-3000 kw |
| 6,000.0 | $ 0.071113 | 3001-9000 kw |
Finally based on crypto currency prices, expenses and mining difficulty I would determine if it was profitable to mine. There were many occasions were I would power off all miners for the day, week, etc until profitability increased.
