logo reservices


Final report and recommendations released!


The REserviceS (Economic grid support from variable renewables) is an FP7-funded project aiming to establish a reference basis and policy recommendations for future network codes and market design in the area of ancillary services from variable renewables. The outputs will be essential insights and economic elements to support the establishment of proper market mechanisms and grid code formulations in the EU, as well as to carry out a preliminary assessment to determine whether ancillary services can generate additional value for network operators by involving grid users, notably wind and solar PV generators.

It is the first study to investigate wind and solar based grid support services at EU level. It will provide technical and economic guidelines and recommendations for the design of a European market for ancillary services, as well as for future network codes within the Third Liberalisation Package.

Electricity grids must be operated safely and efficiently, and technical services provided to transmission system operatots (TSOs), and distribution system operators (DSOs) play an essential part in ensuring this. Such services include controlling frequency and voltage as well as providing reserves. Generally, these so-called ancillary services are provided by large dispatchable power plants. As the share of renewables in the overall energy system continues to rise – regionally expected to meet up to 50% of electricity demand by 2020 – a drastic change in strategy for the procurement of ancillary services is required.

REserviceS encourages the efficient and economic deployment of a large shares of renewable energy sources by exploring how wind and solar photovoltaic (PV) plants can provide such services in the future European power system. REserviceS investigates the opportunities and costs of providing ancillary services from wind and PV systems by:


  • Analysing the needs for ancillary services (e.g. voltage and frequency support) in the European power system, with a growing share of variable renewables
  • Identifying which ancillary services wind and PV can provide and which are of interest to system operators, today and in the future
  • Analysing factors influencing the provision of ancillary services by wind and PV
  • Creating a European harmonised method to calculate the costs for ancillary services provided by wind and PV.


This way, REserviceS will encourage the completion of an EU single electricity market with cost-efficient integration of variable renewables, improved grid management, and increased electricity system security.


Research stage




The project runs from April 2012 – September 2014.



European Distribution System Operators for Smart Grids (EDSO), specifically Enel distribuzione, ERDF, Iberdrola Distribución, Unión Fenosa Distribución, Endesa Distribución, EDP Distribuicao), European Wind Energy Association (EWEA) (coordinator), European Photovoltaic Industry Association (EPIA), 3E, VTT Technical Research Centre of Finland, Fraunhofer IWES, Acciona Energia, University College Dublin, Technical University of Denmark, , Mainstream Renewables, SMA, GE Wind Energy.


 More information: