With this calculator you can work out how long an investment in an energy storage time shifting system for your home would take to be paid back in full. Such systems typically charge a battery during the off peak period and then discharge during the peak period, so saving you the difference in price between peak and off peak. As such you need to repeat this cycle a number of times to get back the cost of the investment in the system, this calculator will help you work out when that will occur.
This is useful for systems like the Tesla Powerwall to work out the base minimal expected repayment period.