This project considered its overall concept to be integrated and to include the research and development of new technological solutions on the one hand side and the analysis of today’s market situation with regard to the introduction of these technologies on the other side.
The E-DeMa marketplace, which was fully designed and implemented throughout the model region’s life cycle, became a pivot for the newly developed ICT-solutions and served to promote the role of the previously passive consumers on the energy market.
For the field test, 13 micro engine-based cogeneration plants were installed at some customers’ premises. The E-DeMa system has taken into account the integration of DER, so that their generation capacity could be bundled and subsequently offered on the marketplace.
Furthermore, 725 households in Mühlheim and Krefeld were equipped with either a so-called ICT gateway 1 (Smart Meter, Gateway) or an ICT gateway II (Smart Meter, Gateway, in-home Energy Management System), which enabled the consumers to actively participate in the E-DeMa marketplace.
Through the marketplace, the customers became familiar with a situation, in which seven different tariffs and contracting solutions coexist and can be switched on a monthly basis. In fact, they could make informed decisions on the way their consumption was billed every month. The supplier and/or billing arrangements switching process was shortened from several months to just a few days.
Apart from aggregated generation quantities, flexible loads could be bundled and offered on the marketplace.
These load flexibilities and generation flexibilities can be placed at the aggregator’s disposal. The aggregator managed to bundle and offer the energy quantities from supply and/or demand side.
The project infrastructure, in fact, served to transcend the traditional roles of the energy consumer and producer in the Rhein-Ruhr region and created the “Prosumer”, able not only to consume but also to generate electricity and contribute to consumption flexibility, which can be offered and traded on the marketplace.
From a functional perspective, the E-DeMa marketplace is a contract-based, market-supporting coordination mechanism assisting and executing all phases from the negotiation to the conclusion of contracts between suppliers and consumers as well as B2B-processes. As a result, all of E-DeMa’s participants shared one common market space.
While the field-test only integrated residential end-users into its ICT-infrastructure, all ICT-solutions can be applied and scaled up to commercial and industrial end-users.
The meter readings collected throughout the field trial served to register and map the households’ consumption patterns in 15 minute intervals.
The field trial included automated solutions as well as incentives that could be translated into action by the consumers manually.
An easy time-of-use tariff already served to persuade active consumers to shift 8,7 per cent of their consumption to a time with a less costly tariff zone.
On average, the active consumers with automated assistance by an energy management system (EMS)) achieved similar shifts in consumption as the consumers that had to rely on their own actions to shift loads.
However, all customers with automated assistance achieved a higher shift away from particularly expensive tariff zones on average.
This article is connected tot he following knowledge article:
E-DeMa ICT architecture model – Technical University Dortmund
IT Security Concept – RWE, Technical University Dortmund, Prosyst, Siemens
Marketplace system – Siemens
ICT gateway 2 as communication and control system incl. MPRM-system – Siemens, Prosyst
Innovative tariff products – RWE, Krefeld Utility, Technical University Dortmund
Android-based App as energy display for the visualisation of the new tariff products – University of Applied Sciences Dortmund, Stadtwerke Krefeld (Krefeld Utility)
Network Management System for monitoring and prognoses – Siemens
Aggregation management system for generation and consumption units – Siemens
Metering Data management system – Siemens and RWE
Multi-functionality metering system for electricity, gas and water for the integration of the individual meters via MBus (Radio) – Stadtwerke Krefeld (Krefeld Utility)
Prof. Dr. Michael Laskowski, RWE Deutschland AG,
Kruppstraße 5, 45128 Essen
www.e-dema.de ; www.rwe.com