By means of this model, an intelligent supply system achieves the comprehensive control and optimization of the energy portfolio (the so-called end-to-end optimization). The balancing is carried out via conventional portfolio management methods or through direct influence on generation and the demand side. These mechanisms establish a situation in which the availability as well as the intermittent generation from renewable energy sources can be used advantageously for suppliers and users of electricity. The incentive-based system influences generation and consumption, supply and demand based on the overall targets. The pricing for generation and consumption was designed dynamically according to predetermined rules and the resulting price signals were sent to the individual applications.
Within their smart homes, the customers received the “intelligent kilowatt hour”, an incentive to shift their energy consumption (manually or supported by automated energy management) to inexpensive tariff zones without suffering from a loss of comfort. Smart meters serve to monitor the consumption data and build the base for variable tariffs, which are billed and rendered transparent in a flexible administration- and reporting system. Offers incentivising energy saving behaviour which decreases peak demand can thus be created.
The open standard EEBus builds the basis for the necessary interconnectedness of the household that becomes a Smart Home by means of an intelligent information and control system. The EEBus approach to build up a norm-based interconnection concept is highly accepted by the industry and can become the foundation for the realisation of Smart Home projects in the future. However, the consolidation of the different stakeholders in one overall system was complex. It was a challenge that we countered with joined forces. The Smart Watts project succeeded in creating the conditions under which the broad deployment of a Smart Energy concept could take place, as a high potential deriving from consumers and prosumers could be activated that can – if scheduled in an optimized way – contribute to decreasing the pressure on our grid. In order to foster the idea of Smart Homes, the connectivity between the individual building blocks has to be strengthened systematically. Next to the energy management, the comfort of the consumer, an increase in security and the further development of new added-value applications, have to be taken into account.
The provided information and signals could be translated into action with smart sockets or smart home appliances, which could be switched on or off automatically within pre-defined parameters set by the customers. The multi-functional iOs-based Smart Watts app provided feedback in form of detailed information regarding the electricity consumption and the option to set the parameters for the automated energy management. The customers could adapt their consumption behaviour based on the information they receive via the Smart Watts-App and thereby contribute to energy efficiency measures.
In a field-trial in Aachen, the interplay between the different Smart Watts-building blocks was tested. About 300 households – separated into three groups each trialling different technology set-ups – were integrated into the field test infrastructure. After the first months of the field test, it was found that integrated automated approaches reliably accomplished large load shifts.
In the group that had received intelligent, so-called smart-grid-ready appliances, increases in loads of up to 10 per cent could be metered in response to inexpensive tariff signals. In expensive tariff zones, consumption reductions of up to 5 per cent were metered.
This article is connected to the following knowledge articles:
EEBus intelligent sockets – Kellendonk Elektronik
EEBus Bridge – Kellendonk Elektronik
EEBus Stack – Kellendonk Elektronik
innovative tariff products – Stawag
Smart Portfolio-Management – PSI
Smart Forecasting – PSI
Smart Balancing – PSI
Smart Accounting – PSI
Smart Information & Advice – PSI
Standards and Patents
EEBus for the description of efficient usage of existent communication standards, which enables manufacturer independent communication between all network participants – Kellendonk Elektronik
Structures and Institutions
EEBus Initiative e. V. – Kellendonk Elektronik
Smart Watts (Model Region Aachen)
utilicount GmbH & Co. KG
Jülicher Straße 338
www.smartwatts.de ; www.eebus.org