1. Joint Research Centre, European Commission, 21027 Ispra, Italy
2. International Renewable Energy Agency, Abu Dhabi P.O. Box 236, United Arab Emirates
3. Faculty of Electrical Engineering, Mathematics, and Computer Science, Delft University of Technology, 2628 CD Delft, The Netherlands
4. Delegation of the European Union to Benin, Porto-Novo BP 613, Benin