1. Energiewende: What do the New Laws Mean? Ten Questions and Answers about EEG 2017, the Electricity Market Act, and the Digitisation Act
https://www.agora-energiewende.de/fileadmin2/Projekte/2016/EEG-FAQ/Agora_FAQ-EEG_EN_WEB.pdf
2. Flexibility in Thermal Power Plants–With a Focus on Existing Coal-Fired Power Plants;Energiewende,2017
3. dena Ancillary Services Study 2030: Security and Reliability of a Power Supply with a High Percentage of Renewable Energy,2014
4. Achieving a 100% Renewable Grid: Operating Electric Power Systems with Extremely High Levels of Variable Renewable Energy
5. California ISO (CAISO) frequency response study;Miller;GE Energy,2011