Skip to content
Calculator Tools
Solar Energy Calculators

Solar Savings Calculator

Annual savings from solar, split between self-consumption and export, over 25 years.

Enter values

Results update as you type.

Result

First-year saving

$720.00

Using solar power as it is generated is worth three to four times as much as exporting it.

Value of self-consumption
$504.00
Export income
$216.00
25-year total
$27,969.41
Self-consumed energy
1,800 kWh
Exported energy
2,700 kWh
Average per month
$60.00

About the Solar Savings Calculator

Annual savings from solar, split between self-consumption and export, over 25 years.

Also known as: solar bill savings, how much will solar save, solar return calculator, pv savings.

How to use this calculator

  1. Enter annual generation, share used directly, import rate per kwh, export rate per kwh and the other fields.
  2. The result updates instantly as you type — press Calculate (or Enter) at any time.
  3. Review the breakdown shown under the main result.
  4. Use Copy result or Share to save the answer or send a link with your inputs.

Formula

saving = self-used × import rate + exported × export rate

Worked example

Using the values pre-filled in the calculator above:

  • Annual generation = 4,500 kWh
  • Share used directly = 40 %
  • Import rate per kWh = 0.28
  • Export rate per kWh = 0.08
  • Annual panel degradation = 0.5 %
  • Annual energy price rise = 4 %

the calculator returns:

  • First-year saving: 720
  • Value of self-consumption: 504
  • Export income: 216
  • 25-year total: 27,969.41