Аннотация:An analysis is made, based on both foreign and Russian studies of modern methods for short-term solar power plants (SPP) performance
forecasting. The actuality of such forecasting in connection with the requirements of grid operators and the rules of electric energy market
has been confirmed. The calculation of forecast error effect on SPP financial losses was carried out both for the forecast and actual
generation values of the two Russian SPPs appearing in price bids, and for model cases corresponding to a decrease in the deviation of
forecast values from actual by 1.3; 2 and 3.9 times