Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Solar Energy
Solar Battery Size Calculator
Calculate required battery capacity (kWh) to back up a home for a chosen number of days at a given daily energy usage and battery depth-of-discharge limit. Use it when sizing storage for solar self-consumption, grid-outage backup, or off-grid systems.
Fill in the required fields to see your result.
Solar Energy
Solar Savings Calculator
Calculate monthly bill savings from a solar PV system by multiplying solar production by your electricity rate. Use it to estimate the financial benefit of an installed or planned system month-by-month.
Fill in the required fields to see your result.
Key differences
| Solar Battery Size Calculator | Solar Savings Calculator | |
|---|---|---|
| Category | Solar Energy | Solar Energy |
| Inputs required | 3 | 2 |
| Result | Required Battery Capacity (kWh) | Monthly Savings ($) |
| What it does | Calculate required battery capacity (kWh) to back up a home for a chosen number of days at a given daily energy usage and battery depth-of-discharge limit. Use it when sizing storage for solar self-consumption, grid-outage backup, or off-grid systems. | Calculate monthly bill savings from a solar PV system by multiplying solar production by your electricity rate. Use it to estimate the financial benefit of an installed or planned system month-by-month. |