Historical Use Calculator

Use this calculator tool to see if Time of Use (TOU) Rates are right for you. All you’ll need to start is your Calculator ID Number.

This tool is designed to show you how your historical usage for the years 2019 and 2020 (and a 2-year average of those years) would look under Time of Use Rates.

Things to keep in mind:

  • This calculator tool is for demonstrational purposes only and may not reflect the exact amount of kilowatt-hours (kWh) you used during the time period covered by the chart.
  • The calculator does not reflect all savings that could occur under Time of Use Rates, rather it gives you a snapshot of what your costs would look like with no behavioral changes over the time periods covered. Shifting usage of appliances and other electric devices may greatly reduce your costs under Time of Use Rates.
  • Only energy charges are included in the calculations below. The customer charge ($10.60/month) is not included, however the customer charge would stay the same under the Time of Use Rates pilot proposal.

How to Get Your Calculator ID Number

Due to data security issues, Belmont Light will provide a randomized, individual “Calculator ID Number” that represents your electric meter number. To get your unique Calculator ID Number, email timeofuse@belmontlight.com with your name and address.

How It Works

  • Enter your Calculator ID Number in the box at the top of the calculator tool.
  • The calculator will show you the following figures for both 2019 and 2020 and the 2-year average:
    • Your kWh usage that occurred during the TOU time periods
    • How much your kWh usage would have cost under TOU rates
    • How much you kWh usage did cost under our current flat residential rate ($0.19317/kWh)
    • The difference between those two costs
  • The pie charts to the right of each table show the breakdown of usage throughout the year, separated into the 4 Time of Use Rate time periods.
  • Note: Values in the Difference column that appear inside parentheses demonstrate a negative difference from the flat rate to TOU Rates, meaning your costs would be less under TOU Rates. Values not in parentheses demonstrate a positive difference, meaning your costs would be most under TOU Rates. For example, a value in the Difference column of $15.00 would mean you would have spent $15 more under TOU Rates than you did during that time period, whereas a value in the Difference column of ($15.00) would mean you would have spent $15 less under TOU Rates.
  • Also note: The calculator tool is based on calendar year usage and does not take into account your billing cycle. As a result, the usage displayed may not match your billed usage.

Historical Usage Calculator

Next Steps

Use the Usage Shifting Calculator to se how much you could save by shifting your electric usage from on-peak to off-peak times.