Patent ID: 8148838

Claim:
A system, comprising: a first unit, including: a first airborne body extending horizontally along a first axis between a first point and a second point associate with the first body, wherein the first body is at least partially filled with a gas, two or more vanes airborne with the first body such that the vanes, when acted upon by a wind force perpendicular to the first axis, are operable to cause rotation about the first axis, one or more tethers coupled to anchor the first body, and a first electrical generator airborne with the first body to convert rotational energy produced by the rotation about the first axis into electrical energy; and a second unit, including: a second airborne body extending horizontally along a second axis between a second point and a second point associate with the second body, wherein the second body is at least partially filled with a gas, two or more vanes airborne with the second body such that the vanes, when acted upon by a wind force perpendicular to the second axis, are operable to cause rotation about the second axis, one or more tethers coupled to anchor the second body, and a second electrical generator airborne with the second body to convert rotational energy produced by the rotation about the second axis into electrical energy; and one or more tethers coupled to anchor the first and second units to a ground point.