Analysis of solar-radiation characteristics at the EURELIOS power plant of Adrano

Summary Two years of experimental data, measured with high resolution at Adrano, have been analysed. The behaviour of the radiation changes on short time intervals, the cumulative distributions, the statistical properties and the influence of the integration time have been studied in detail. The distributions of daily collected energy in different periods andvs. power thresholds have been computed together with the differences between the average and the most favourable periods. In order to allow the optimum dimensioning of the storage system, a study on the statistical properties of excess (**) and recurrence time intervals has been developed. Work carried out under contract with the Italian Electricity Board (ENEL).