A vertical axis wind turbine generator comprising: a support stand; a shaft having a first end, a second end and a vertical axis extending in a longitudinal direction of the wind turbine generator; a first rotating member coupled to a portion at the first end of the shaft, a second rotating member coupled to the support stand, wherein the first and second rotating members (12, 13) are able to rotate about said axis; two or more blades (14, 24, 34) having two free ends (15, 16) defining two opposite blade portions, a first connecting member connecting the first blade portion related to the first free end with the first rotating member, a second connecting member connecting a second blade portion related to the second free end with the second rotating member, and actuating means arranged to cause the first and/or second rotating members (12, 13) to move towards or away from one another along the vertical axis, wherein movement of the first and/or second rotating members (12, 13) towards or away from one another causes the blades (14, 24, 34) to move further from, or closer to, the shaft, wherein the shaft is connected through the support stand with an electric generator, especially an alternator, and a control unit connected to the actuating means to provide the actuating means with power to move the first and/or second rotating members (12, 13) towards or away from one another, and in that the connecting members (17, 18) comprise each an essentially straight inner profile connected to the respective rotating member (12, 13), characterized in that the wind turbine generator further comprises a solar panel mounted on the first end of the shaft and a control unit, being connected to the solar panel and/or also being connected to the electric generator to provide the electric generator with power to start rotation of the blades (14, 24, 34) and in that the connecting members (17, 18) comprise an essentially straight outer profile hingedly connected to the respective blade (14, 24, 34), and in between a respective intermediate curved portion (27, 28) oriented in a convex manner in opposition to the respective other one. a support stand; a shaft having a first end, a second end and a vertical axis extending in a longitudinal direction of the wind turbine generator; a first rotating member coupled to a portion at the first end of the shaft, a second rotating member coupled to the support stand, wherein the first and second rotating members (12, 13) are able to rotate about said axis; two or more blades (14, 24, 34) having two free ends (15, 16) defining two opposite blade portions, a first connecting member connecting the first blade portion related to the first free end with the first rotating member, a second connecting member connecting a second blade portion related to the second free end with the second rotating member, and actuating means arranged to cause the first and/or second rotating members (12, 13) to move towards or away from one another along the vertical axis, wherein movement of the first and/or second rotating members (12, 13) towards or away from one another causes the blades (14, 24, 34) to move further from, or closer to, the shaft, wherein the shaft is connected through the support stand with an electric generator, especially an alternator, and a control unit connected to the actuating means to provide the actuating means with power to move the first and/or second rotating members (12, 13) towards or away from one another, and in that the connecting members (17, 18) comprise each an essentially straight inner profile connected to the respective rotating member (12, 13), characterized in that the wind turbine generator further comprises a solar panel mounted on the first end of the shaft and a control unit, being connected to the solar panel and/or also being connected to the electric generator to provide the electric generator with power to start rotation of the blades (14, 24, 34) and in that the connecting members (17, 18) comprise an essentially straight outer profile hingedly connected to the respective blade (14, 24, 34), and in between a respective intermediate curved portion (27, 28) oriented in a convex manner in opposition to the respective other one.