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→Chapter 4 Energy Suppliers / Retailers
=Chapter 4 Energy Suppliers / Retailers=
The market role "Lieferant" (retailer or supplier) is the consumers contracting party for energy delivery. This party is not necessarily the same organization or company acting in the role of grid or smart meter operator. Nevertheless it has vital interest to influence the behaviour of energy deliver to the customer via the smart meter. For this purpose the retailer is using the role of "external market participant" in the WAN connected to the smart meter gateway. The messages from the retailer can be authenticated by the smart meter gateway using the PKI and do include meter readouts (UTILMD 13017), status information and changes in tarriffs.
The following 14 [https://www.bsi.bund.de/SharedDocs/Downloads/DE/BSI/SmartMeter/Stufenmodell/Energiewirtschaftliche_Anwendungsfaelle.pdf?__blob=publicationFile&v=5 tarrif schemes] (TAF) are defined for smart meters in Germany:
'''TAF 1:''' low frequency communication mode
'''TAF 2:''' variable tariff by time
'''TAF 3:''' variable tariff by grid load
'''TAF 4:''' variable tariff by consuption
'''TAF 5:''' variable tariff by event
'''TAF 6:''' meter readout on demand for unpredicted events
'''TAF 7:''' normal frequency communication mode
'''TAF 8:''' min max recording mode
'''TAF 9:''' consumer generated electricity (grid import) momentary value
'''TAF 10:''' complete status readout including fraud registers
'''TAF 11:''' CLS control (on/off)
'''TAF 12:''' prepaid
'''TAF 13:''' consumer data copy (han>WAN)
'''TAF 14:''' high frequency communication mode
If the consumer is notoriously late paying bills, switching to TAF12 will put the meter into prepaid mode. The meter will allow electricity to be delivered only if accounts receivable balance is positive.
=Chapter 5 Energy Generation / Powerplants=
=Chapter 6 Energy Import /Export in the EU and Worldwide=
