Abstract
In the Republic of Kazakhstan, forecasting of electric energy generation by solar power plants is carried out according to a decentralized model. This means that the facilities themselves predict the weather and production and are responsible for the forecasting results. An urgent problem is the discrepancy between the forecast data and the actual output. This may lead to the need to adjust financial and technical models. This article discusses forecasting methods, fundamental legal tolerances and limitations. In addition, the article demonstrates the achievable results of forecasting the generation of electric energy by solar power plants and provides objective arguments indicating the difficulty of creating objective forecasts, outlines possible measures to improve the forecasting process and processing of its results