Ramp Data & Flexibility
Flexibility options in electricity systems (Ecofys 2014)
Flexible Generation: Backing up Renewables - a EURELECTRIC report
Flexibly & Ramp Rate Of Conventional Power Generation Technologies (data 2011 & 2014)
The European Power System in 2030: Flexibility Challenges & Integration Benefits (Fraunhofer IWES 2015 external link)