Das hilft leider nicht weiter.
Folgendes funktioniert bspw.
<energyCertificate>
<energyCertificateCreationDate>FROM_01_MAY_2014</energyCertificateCreationDate>
<energyConsumptionElectricity>1.01</energyConsumptionElectricity>
<energyConsumptionHeating>92.00</energyConsumptionHeating>
</energyCertificate>
und folgendes nicht:
<energyCertificate>
<energyCertificateCreationDate>FROM_01_MAY_2014</energyCertificateCreationDate>
<energyConsumptionElectricity>0.01</energyConsumptionElectricity>
<energyConsumptionHeating>92.00</energyConsumptionHeating>
</energyCertificate>