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Guiding a Least Cost Grid Integration of RES-Electricity in an extended Europe (GREENNET-EU27)

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The project was designed chiefly to develop strategies aimed at integrating energy from renewable sources into European power grids as cheaply as possible. The project's basic tool, the GreenNet Europe software, was developed further with the incorporation of various parameters, constraints and energy policies. Real costs for grid integration, extension and reinforcement were extrapolated and correlated with usual infrastructure costs and electricity prices. By identifying the barriers to large-scale integration of RES-E and taking into account varying constraints, the project set out to develop best-practice concepts to overcome the barriers identified. The project team had utilities and transmission operators (Energinet, EnBW and Wienstrom) on board, a prerequisite to allow for real market input and for an effective dissemination.

Results

  • The GreenNet software was further developed, modelling strategies for the integration of renewable electricity as cheaply as possible. The various constraints and energy policies up until 2020 were incorporated in the model and the simulation software is being delivered free of charge on CD-ROM or is available on the website;
  • Comprehensive, empirical data were collected on the cost-resource curves for existing renewable energy generation and additional system operation reinforcement, factoring in extension costs triggered by intermittent integration within the different European systems;
  • Identification of the three major barriers to progress: allocation of grid integration costs; no common best practice in grid access charging; and no incentives for grid operators to connect RES-E generators;
  • Tailor-made, practical guidelines and action plans were published for decision makers and other interested parties, establishing a common understanding on strategies for least-cost integration of renewables across a wider Europe;
  • The www.greennet-europe.org website received more than 27 762 visitors.
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Lessons learned

  • In different EU Member States there still exist a variety of different, non-transparent cost allocation and cost reimbursement principles for grid integration of renewable electricity and system operation. Practical guidelines to harmonise existing legislation in this context are presented in the recommendation report (action plan for decision makers) of the project GreenNet-EU27.
  • From the grid-operators’ points-of-view, at present there exist no incentives for large-scale grid integration of renewable electricity, since the corresponding grid-related costs are hardly eligible in the grid regulation / grid tariff determination procedures. Practical guidelines to overcome these disincentives are also outlined in the recommendation report (action plan for decision makers) of the project GreenNet-EU27.
  • Comprehensive quantitative analyses (renewable electricity modelling, empirical renewable electricity case studies) provide evidence that the “overall costs” of large-scale intermittent grid integration of renewable electricity (incl. system operation costs and grid reinforcement/extension costs) are still below 10% of the long-run marginal costs of the renewable electricity generation technology itself. Last Updated: 22.06.2010
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Partners and coordinator

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Contact

Vienna University of Technology (Technische Universitaet Wien)
Vienna
Austria
Contact point: 
Name: 
Reinhard Haas
Tel: 
0043-1-58801-37352
Name: 
Reinhard Haas
Tel: 
0043-1-58801-37357
Name: 
Hans Auer
Tel: 
0043-1-58801-37357
Name: 
tba
Name: 
Raphael Bointner
Tel: 
+43-1-58801370352
Name: 
Dr. Gustav Resch
Tel: 
0043-1-58801 370354
Name: 
Prof. Dr. Amela Ajanovic
Tel: 
0043-1-58801-370364

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In brief

Duration:
01/01/2005 to 31/12/2006
Contract number: 
EIALT/EIE/04/049/2004

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