it highlights in particular that the impact of the compression effect depends heavily on the time frame under consideration in the short run when the structure of electricity systems is fixed especially high variable cost producers such as gas will decrease market share as a result of lower average prices in the long run however when new investments must be considered reduced load factors mean that investors have a tendency to turn away from capitalintensive highfixed cost lowcarbon technologies such as nuclear eventually there will a tradeoff between lower load factors and higher carbon prices