Abstract: The invention relates to a method of determining a desired power curve for a wind power plant for use in connection with the subsequent design and positioning of the wind power plant (307), where the wind power plant is to be coupled as energy source to a power network comprising a number of energy sources. The power curve is determined relative to the remaining energy sources of the power network to the effect that the power supply of the wind energy plant is maximised during periods (203) when the total power output (301) from the remaining energy sources of the power network is low. The invention further relates to a system of determining a desired power curve for a wind power plant. The invention also relates to a group of energy sources comprising a wind power plant and a number of remaining energy sources, where the power curve of the wind power plant is such that power supply is maximised in periods of time (203) when the total power output from the remaining sources of energy is low.

Abstract: The present invention relates to a group of wind power plants for positioning in approximately the same wind climate, comprising at least a first and at least a second wind power plant, where the first wind power plant exhibits maximised power output within a first interval of wind speeds, and the second wind power plant is designed to exhibit maximised power output within a second interval of wind speeds which is different from and starting from lower wind speeds than the first wind speed interval to the effect that the total power output of the group of wind power plants is increased at lower wind speeds. Moreover, the invention relates to a method of designing a group of wind power plants in accordance with the above. This can be accomplished eg by designing the supplementary wind power plant(s) with a larger rotor area and with a lower cut-out wind speed or, alternatively, by using a wind power plant without power-regulating means.

Abstract: Wind turbine blade (10) including adjustable lift-regulating means (12, 13, 15, 17, 19, 21) arranged on or at the surface of the wind turbine blade (10), said lift-regulating means being provided with activating means by means of which they can be adjusted and thus alter the aerodynamic properties of the blade (10). The lift-regulating means (12, 13, 15, 17, 19, 21) and the activating means are adapted and arranged such that by activation of the activating means, the lift can be reduced in a zone extending in the longitudinal direction of the blade (10) from a first position adjacent the blade tip (14) to a second position between the position and the blade root (16) and this second position is variable in the longitudinal direction of the blade (10) by adjusting activate means. The lift-regulating means are formed of at least one flexible flap (12, 13, 15, 17, 19, 21).