How much energy and money can you save with an energy audit?

Answer by Helen Santalla (Creara)

Of course the yield obtainable from an energy audit depends on the starting situation in your facility. Clearly the less efficient your facility is, the larger the potential savings.

On the other hand, the higher the price of energy supplies, the cost savings are greater after the implementation of energy saving measures.

Expected savings

Depending on the type of facility, there is a variation in the savings can be expected:

 

Typology

Energy savings (%)

Payback (years)

Residential or commercial buildings

15%-25%

1-4

Street lighting

25%-35%

3-5

Industrial facilities

5%-20%

10

Shops

15%-25%

3-5

Hotels

20%-30%

2-4

 

Convert energy to money

Another issue to take into account is how to convert energy consumption (kWh) to cost of supply (€). This is done differently in each country since energy bills are calculated differently in each case. Therefore, the price of supply (€/kWh) is different in every country so this conversion can not be standardized.

The calculation is performed as follows:

Consumption (kWh) x Price of supply (€/kWh) = Cost of supply (€)

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