Consequently, renewables also will have to play an increasing role to balance the network during low load situations. Figure 16 shows this issue with a modelled load duration curve corresponding to 80% of renewables in an isolated balancing area. During periods with low load or excess generation, wind and solar will probably have to reduce their output to maintain network security. As more wind and more solar power plants are coming on line, granting them priority dispatch only constrained by security of supply reasons may become highly uneconomical.