1. Agency for the Cooperation of Energy Regulators (ACER), Report on unit investment cost indicators – Electricity Infrastructure, August 2015.
2. Agora Energiewende, Current and future cost of photovoltaics, February 2015.
3. Belgian Federal Ministry of Energy, Environment and Sustainable Development press release of 27 Octobre 2017.
4. Bundesnetzagentur, press releases of 13 Avril 2017 and 27 Avril 2018.
5. Bundesnetzagentur, Bundesnetzagentur veröffentlicht Zahlen zu Redispatch und Einspeisemanagement für 2017, press release of 18 June 2018. Bundesnetzagentur, website.