This article focuses too much on IQ and the construction of some type of quantifiable unbiased bell curve of intelligence . No such thing exists . <| sep |> The report also notes that many generators provide frequency response in the wrong direction during a disturbance . Well that ' s terrifying So , I understand the mechanisms that synchronous generators use to arrest frequency decline . Inertia , governors , droop % and all that . What I ' m more curious about is the exact mechanism the nonsynchronous sources use if they aren ' t required to hold headroom . How exactly are they going to help arrest a frequency decline if they don ' t have additional power to put on the system ? If frequency is a function of the genload balance , how do they contribute without adding MWs ?