Enter the energy from a specific source and the total energy into the calculator to determine the percentage of energy from that source.

Energy Percentage Calculator

Source Share %
Energy Savings %
Macro Energy %
Energy Mix %

Enter any 2 values to calculate the missing one.


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Energy Percentage Formula

The following formula is used to calculate the percentage of energy from a specific source.

P = (E_s / E_t) * 100

Variables:

  • P is the percentage of energy from the specific source
  • E_s is the energy from the specific source (in joules)
  • E_t is the total energy (in joules)

To calculate the percentage of energy from a specific source, divide the energy from the specific source by the total energy and multiply the result by 100.

What is Energy Percentage?

Energy percentage refers to the proportion of energy contributed by a specific source relative to the total energy. This calculation is essential in various fields, including renewable energy, where it helps in understanding the contribution of different energy sources like solar, wind, and fossil fuels. By knowing the energy percentage, one can make informed decisions about energy management, efficiency, and sustainability.

How to Calculate Energy Percentage?

The following steps outline how to calculate the Energy Percentage.


  1. First, determine the energy from the specific source (E_s).
  2. Next, determine the total energy (E_t).
  3. Finally, calculate the percentage of energy from the specific source using the formula P = (E_s / E_t) * 100.
  4. After inserting the values and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

Energy from specific source (E_s) = 500 J

Total energy (E_t) = 2000 J