Economical balances within a delegate dispatch of renewable generations

The modern technologies used to generate electricity from renewable sources allow some control abilities of the production. These abilities can be required when the system is at risk by the System Operator. When facing a contingence, the System Operator could specify maximum values of renewable production in zones of the system. Delegated Dispatches of renewable production are zonal intermediate entities, responsible of calculating the optimal profile of renewable generations in the region reaching the System Operator restrictions. In the present paper, the economic exchanges in a Delegated Dispatch are analyzed. The renewable producers bid control prices to the Delegated Dispatch in a market-based procedure. After the operation, the control costs are proportionally shared among the producers. A realistic test in a Spanish distribution grid shows the efficiency of the proposed method.