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Solar Export Calculator

Calculate exported solar energy and the revenue it earns.

About Solar Export Calculator

Self-consumed energy is worth the retail import price while exported energy earns only the export rate, often a fifth as much. That gap is the entire economic case for batteries and load shifting. The value of shifting one kWh from export to self-consumption is the number that determines whether a battery pays for itself.

Formula

Solar Export

Export revenue = exported kWh × export rate; self-consumption saving = used kWh × import price

export rate
Payment received for energy sent to the grid
value of shifting
Import price less export rate, the gain from using rather than exporting

Worked example

With the default values below, Solar Export Calculator returns Energy Exported of 3,575.0. Change any input above and every figure here is recalculated in your browser.

Inputs used

Annual generationminimum 0 kWh
6,500 kWh
Self-consumption rateaccepts 0–100 %
45 %
Export payment per kWhminimum 0
0.05
Import price per kWhminimum 0
0.25

Results

Energy Exported
3,575.0 kWh
Annual Export Revenue
$178.75
Annual Saving From Self-Consumption
$731.25
Total Annual Benefit
$910.00
Value of Shifting One kWh From Export to Use
$0.2000

Step by step

  1. 1Values used
  2. 2Solar Export
  3. 3Energy Exported= 3,575.0 kWh
  4. 4Annual Export Revenue= 178.75
  5. 5Annual Saving From Self-Consumption= 731.25
  6. 6Total Annual Benefit= 910.00
  7. 7Value of Shifting One kWh From Export to Use= 0.2000

Assumptions and limits

  • The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax or fees or charges into account.
  • Figures are rounded for display to 4 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

How is Solar Export calculated?

Export revenue = exported kWh × export rate; self-consumption saving = used kWh × import price Self-consumed energy is worth the retail import price while exported energy earns only the export rate, often a fifth as much. That gap is the entire economic case for batteries and load shifting.

Why does Solar Export matter?

The value of shifting one kWh from export to self-consumption is the number that determines whether a battery pays for itself.

What values do I need to enter?

This calculator takes 4 inputs: Annual generation, Self-consumption rate, Export payment per kWh, Import price per kWh. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.

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