Auxiliary energy (solar energy systems)

Calculation method

 EPG
This auxiliary energy of a solar energy system can be determined flat rate but may also be specified in detail. In the latter case a quality statement must be provided.

§ Flat rate
The auxiliary power is determined flat rate according to NEN 7120, Section 19.8.4.

§ Detailed
The auxiliary power is provided from a quality statement which must be added to the calculation.

Collector pump present

 EPG
The auxiliary energy is charged for the collector pump and the collector pump control if a collector pump is present. The latter can be indicated here.

Design Values

 EPG
It can be indicated whether the calculation values for the collector pump should be determined using fixed design values or using custom values. These design values can be specified only if a collector pump is present and the auxiliary energy is determined using the flat rate method.

§ Flat rate
The power of the collector pump is determined flat rate according to NEN 7120, Section 19.8.4.3.

§ Custom values
The power of the collector pump and the collector pump control is known and can be specified in W.

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Power collector pump

 EPG
The power of the collector pump should be specified here, expressed in W. This parameter can only be stated if the calculation method is flat rate, a collector pump is available, and the design values are specified as custom values.

Power collector pump control

 EPG
The power of the collector pump control should be specified here, expressed in W. This parameter can only be stated if the calculation method is flat rate, a collector pump is available, and the design values are specified as custom values.

Auxiliary energy collector pump and control

[MJ / year] EPG
The annual auxiliary energy for the collector pump and the collector pump control can be specified here according to a quality statement, expressed in MJ / year. This auxiliary energy can only be specified if the calculation method is detailed and a collector pump is available.

Frost protection available

 EPG
Auxiliary power will be charged if frost protection is available, which can be indicated here.

Power frost protection

 EPG
The power of the frost protection system should be specified here, expressed in W. This parameter can only be stated if the calculation method is flat rate and frost protection is available.

Auxiliary energy frost protection

[MJ / year] EPG
The annual auxiliary energy for the frost protection can be specified here according to a quality statement, expressed in MJ / year. This auxiliary energy can only be specified if the calculation method is detailed and frost protection is available.