I don't use that tab, but is the Watt-hour field available? That should be the data you need to review. If it's there, you would need a delta between start and end total watt-hour to compare to your bill.
My power meter sensor provides instantaneous watts (W), total energy (kWh), and temperature. In HG, I can look at the W data to see spikes from when the furnace or water heater kick on. I can use the kWh data to see how the total usage has increased over time. If I take the end reading and subtract the start reading, the difference will be what I'm charged for in that period. So, if I know the bill dates, I can compare the data in that way. I have only just gotten this working in HG, so I have not yet been able to compare the data to my electricity bill for confirmation this approach will work. However, I have been watching the raw data, the electric bill, and the numbers on the meter for many, many months so I'm confident this approach is valid.