1. Tractebel Engineering and Katholieke Universiteit Leuven: ‘Study of the interactions and dependencies of balancing markets intraday trade and automatically activated reserves ’ DG‐TREN (TREN/C2/84/2007) 2009
2. Impact of hourly wind power variations on the system operation in the Nordic countries
3. UKERC UK Energy Research Centre: ‘The costs and impacts of intermittency: an assessment of the evidence on the costs and impacts of intermittent generation on the British electricity network ’ London UK October 2006 available athttp://www.ukerc.ac.uk
4. VTT Technical Research Centre of Finland: ‘Design and operation of power systems with large amounts of wind power final report phase one 2006–08 ’ IEA Wind Task 25 2009 available athttp://www.ieawind.org/