smartmeter-netznoe

Simple static class to decrypt apdu messages and decode data from EVN Netz NÖ smart meters. To get the key to decrypt messages from your smart meter follow the official guide.

required libraries

AES decryption pip3 install pycryptodomex

usage

 # sample key and data from evn netz noe
 # https://www.netz-noe.at/Download-(1)/Smart-Meter/218_9_SmartMeter_Kundenschnittstelle_lektoriert_14.aspx
    
 sample_key = '36C66639E48A8CA4D6BC8B282A793BBB'
 sample_data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

 print(NetzNOESmartmeterMessage().decrypt(sample_key, sample_data))

sample output

{
    'timestamp': datetime.datetime(2021, 9, 27, 9, 47, 15), 
    'a_plus': 12937, 
    'a_minus': 0, 
    'p_plus': 0, 
    'p_minus': 0, 
    'voltage_l1': 2337, 
    'voltage_l2': 0, 
    'voltage_l3': 0, 
    'current_l1': 0, 
    'current_l2': 0, 
    'current_l3': 0, 
    'power_factor': 1000, 
    'meter_number': 67013263506611294340757425949
}