A system for producing electrical power, comprising: a set of wind turbine units, each wind turbine unit of the set of wind turbine units being adapted to produce electrical power based on kinetic energy extracted from wind; a first plurality of sensors, each sensor of the first plurality of sensors being adapted to sense at least one wind characteristic at a respective wind turbine unit of a proper subset of the set of wind turbine units; a second plurality of sensors, each sensor of the second plurality of sensors being arranged at a distance with respect to each of the wind turbine units in the set of wind turbine units and being adapted to sense at least one wind characteristic at a location at which the sensor is arranged; and a processing unit, wherein the processing unit and first and second plurality of sensors are communicatively coupled such that the processing unit is able to receive sensed wind characteristics from each of the first and second plurality of sensors; the processing unit being adapted to estimate at least one wind characteristic at each wind turbine unit that is not included in the proper subset of the set of wind turbine units, based on: the sensed at least one wind characteristic at the respective wind turbine units of the proper subset of the set of wind turbine units; and an estimate of changes in wind characteristic at each wind turbine unit that is not included in the proper subset of the set of wind turbine units caused by presence of other wind turbine units of the set of wind turbine units; wherein each sensor of the first plurality of sensors is adapted to sense a plurality of successive values of the at least one wind characteristic at the respective wind turbine unit of the proper subset of the set of wind turbine units, and/or each sensor of the second plurality of sensors is adapted to sense a plurality of successive values of the at least one wind characteristic at the location at which the sensor is arranged; the processing unit being adapted to predict a magnitude of electrical power production by the set of wind turbine units at at least one predefined point in time in the future based on the estimated wind characteristics and a statistical measure of a plurality of values of sensed wind characteristics obtained during at least one time period. a set of wind turbine units, each wind turbine unit of the set of wind turbine units being adapted to produce electrical power based on kinetic energy extracted from wind; a first plurality of sensors, each sensor of the first plurality of sensors being adapted to sense at least one wind characteristic at a respective wind turbine unit of a proper subset of the set of wind turbine units; a second plurality of sensors, each sensor of the second plurality of sensors being arranged at a distance with respect to each of the wind turbine units in the set of wind turbine units and being adapted to sense at least one wind characteristic at a location at which the sensor is arranged; and a processing unit, wherein the processing unit and first and second plurality of sensors are communicatively coupled such that the processing unit is able to receive sensed wind characteristics from each of the first and second plurality of sensors; the processing unit being adapted to estimate at least one wind characteristic at each wind turbine unit that is not included in the proper subset of the set of wind turbine units, based on: the sensed at least one wind characteristic at the respective wind turbine units of the proper subset of the set of wind turbine units; and an estimate of changes in wind characteristic at each wind turbine unit that is not included in the proper subset of the set of wind turbine units caused by presence of other wind turbine units of the set of wind turbine units; the sensed at least one wind characteristic at the respective wind turbine units of the proper subset of the set of wind turbine units; and an estimate of changes in wind characteristic at each wind turbine unit that is not included in the proper subset of the set of wind turbine units caused by presence of other wind turbine units of the set of wind turbine units; wherein each sensor of the first plurality of sensors is adapted to sense a plurality of successive values of the at least one wind characteristic at the respective wind turbine unit of the proper subset of the set of wind turbine units, and/or each sensor of the second plurality of sensors is adapted to sense a plurality of successive values of the at least one wind characteristic at the location at which the sensor is arranged; the processing unit being adapted to predict a magnitude of electrical power production by the set of wind turbine units at at least one predefined point in time in the future based on the estimated wind characteristics and a statistical measure of a plurality of values of sensed wind characteristics obtained during at least one time period.