Buffering volatility : storage investments and technology-specific renewable energy support

Mitigating climate change will require integrating large amounts of highly intermittent renewable energy (RE) sources in future electricity markets. Considerable uncertainties exist about the cost and availability of future large-scale storage to alleviate the potential mismatch between demand and supply. This paper examines the suitability of regulatory (public policy) mechanisms for coping with the volatility induced by intermittent RE sources, using a numerical equilibrium model of a future wholesale electricity market. We find that the optimal RE subsidies are technology-specific reflecting the heterogeneous value for system integration. Differentiated RE subsidies reduce the curtailment of excess production, thereby preventing costly investments in energy storage. Using a simple cost-benefit framework, we show that a smart design of RE support policies significantly reduces the level of optimal storage. We further find that the marginal benefits of storage rapidly decrease for short-term (intra-day) storage and are small for long-term (seasonal) storage independent of the storage level. This suggests that storage is not likely to be the limiting factor for decarbonizing the electricity sector

A scalability analysis of grid allocation mechanisms

This article examines the broker's behavior with regard to a varying number of participating nodes and shows that incremental losses have to be accepted in central resource allocation when introducing new nodes. --Grid Computing

Analysis of simulation environment

In this paper the requirements for an ALN simulation environment are analysed, as needed in the CATNETS Project. A number of grid and general purpose simulators are evaluated regarding the identified requirements for simulating economical resource allocation mechanisms in ALNs. Subsequently a suitable simulator is chosen for usage in the CATNETS project. --CATNETS simulator,requirements analysis,simulator selection

Simulator Development - Annual Report Year 2

In this paper the simulation environment for the CATNETS project is defined further. The chosen simulator is adopted in terms of new features an architecture changes in order to provide a valid simulation environment for Application Layer Network scenarios. Furthermore the requirements for a scenario generator and the needed configuration mechanisms for the actual simulation runs are introduced. --Grid Computing

Ein ungewöhnlicher Einsatz von Akupunktur bei unklarer Bewusstlosigkeit

Zusammenfassung: Ein tief bewusstloser Patient stellt den Notarzt vor eine besondere Herausforderung, vor allem wenn eine psychogene Ursache vermutet wird, aber eine organische Ursache nicht ausgeschlossen werden kann. Beschrieben wird der Fall einer Patientin, die nach Stimulation am Akupunkturpunkt Lenkergefäß26 durch den Notarzt zweimal aus einer tiefen Bewusstlosigkeit erwachte und mit unauffälligem neurologischem Befund in eine psychiatrische Klinik eingewiesen werden konnte. Als Diagnose wurde eine akute Belastungsreaktion mit dissoziativem Stupor gestellt. Der Fall zeigt, dass Akupunktur bei unklaren komatösen Zuständen mit Verdacht auf psychogene Ursache als Therapieversuch unternommen werden kan

Evaluation and metrics framework

In this paper a metrics framework for evaluating different scenarios in the CATNETS project is defined. The aim is to use this framework to compare the catallactic scenario against the central auctioneer. --Grid Computing

Simulator Development - Annual Report Year 3

This document describes the progress of the simulator development with in the third year of the CATNETS project. The refinement of the simulator as well as a detailed guide to conducting simulations is presented. --Grid Computing

Theoretical and Computational Basis for CATNETS - Annual Report Year 2

In this work the self-organising potential of the CATNETS allocation mechanism is described to provide a more comprehensive view on the research done in this project. The formal description of either the centralised and decentralised approach is presented. Furthermore the agents' bidding model is described and a comprehensive overview on how the catallactic mechanism is incorporated into the middleware and simulator environments is given. --Decentralized Market Mechanisms,Centralized Market Mechanisms,Catallaxy,Market Engineering,Simulator Integration,Prototype Integration