Patent ID: 8396694

Claim:
Method of forecasting the electrical production of a photovoltaic device comprising photovoltaic modules ( 1 ), comprising a first part of estimating the lighting that will be received in the plane of the photovoltaic modules ( 1 ) and a second part of estimating the electrical production of the photovoltaic device, characterized in that the method comprises the following first step: determination of whether a past considered period is sunny or cloudy, and characterized in that it comprises the following second step of implementing at least one of the following two steps: correction of the second part of the method of forecasting the electrical production based on the measurement of the true electrical production of the photovoltaic modules over the past considered period if this past considered period is sunny; and/or correction of the first part of the method of forecasting the electrical production based on the measurement of the true electrical production of the photovoltaic modules over the past considered period if this past considered period is cloudy.