NOVELTY - The blade has a main blade body rotating about a vertical rotational axis of a rotor. Two ends are connected to the main blade body, where the ends articulate with respect to the main blade body at a variable position angle of 0 to 90 degrees relative to the main blade body. The variable position angle is oriented toward an inner side of the rotor, toward an outer side of the rotor and parallel to the rotational axis of the rotor. An arm connected to the blade is extended toward and perpendicular to the rotational axis of the rotor.    USE - Blade for a vertical axis turbine (claimed) in an electrical vehicle in an urban area.    ADVANTAGE - The ends articulate with respect to the main blade body at the variable position angle of 0 to 90 degrees relative to the main blade body, so that the blade can adjust position angle of the ends to increase stability of the turbine when the turbine reaches high rotational speeds to self-start the turbine more efficiently, thus optimizing turbine performance and adjusting the turbine performance with respect to an installation site by modifying the blade's form. The ends can absorb energy of the fluid flow when the ends reach the turbine at angle in a vertical or horizontal plane. The arm connects the blade to the rotor to achieve aerodynamic profile that is suitable to reduce drag of the turbine. The blade can be installed in sets of single units, so that articulation between different portions of the blade can be accomplished by mechanical linkages, gearing, hydraulic pneumatic articulation joints, servo motors and separate articulated joints that are independently removed and replaced for differing operating conditions. The blade allows acceptance of energy production from renewable sources by reducing carbon dioxide emissions for decentralized electrical energy production in the urban areas to culminate energy needs and to reduce electrical grid upgrade and maintenance cost to assure diversity, security and quality in delivery of electrical energy with insensitivity to yaw wind direction while reducing number of components and sound emissions to generate energy from wind in skewed flow and to operate the turbine closer to the ground level.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a vertical axis turbine comprising a vertical rotational axis structure.    DESCRIPTION OF DRAWING(S) - The drawing shows a perspective view illustrating horizontal plane angles and vertical plane angles of a flow when a blade reaches a vertical axis turbine.    Vertical plane (4)    Horizontal plane (5)