Savings Estimator
Time of Use Calculator
Estimate what you could save on Rocky Mountain Power's Time of Use rates with a smart battery. Enter or upload your own usage and the calculator runs the numbers for your home.
How it works
1
Choose your method
Enter monthly totals manually, upload daily CSV files, or restore from a backup.
2
Follow the steps
Each tab has a "How it works" section that shows where to find your usage data.
3
Compare the results
See standard rates next to TOU with a smart battery that covers the 6 to 10 p.m. weekday peak.
Why a smart battery helps
Besides backup power, a smart battery charges when electricity is cheap and runs your home during the weekday peak, when on-peak power costs about 4.5 times the off-peak rate.
- Lower cost for your peak-hour power
- Run on the battery from 6 to 10 p.m.