1. A method for validating and controlling an electric power plant capability as an electric service provider, the electric power plant comprising a plurality of renewable energy devices connected to an electric distribution grid, the method comprising: receiving a plurality of input data records from the plurality of the renewable energy devices, respectively, the input data records respectively defining a plurality of device capabilities associated with at least one electrical service to be provided by the renewable energy devices to the electric distribution grid, estimating internal power losses of the electric power plant, using the input data records and the internal power losses for calculating an output data record defining the electric power plant capability for said electrical service, communicating the output data record to an operator of the electric distribution grid, responsive to the output data record, receiving a validation signal from the operator of the electric distribution grid confirming or not confirming that the electric power plant capability for said electrical service is compliant with a standard and/or need of the electric distribution grid; and commanding execution of said electrical service by the electric power plant to solve a load imbalance in response to a confirming validation signal.