Changes

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|'''Tubular Tower: '''They are constructed from rolled steel plates welded together with flanges top and bottom, being sprayed with several coats of gray weatherproof paint at the construction yard. They have doors top and bottom allowing entrance to the vertical ladders inside used to access the power cables and the yaw mechanism. There are also a set of vertical ladders on the outside of the tower accessing the nacelle for maintenance and other checks.

|[[Image:turbular.jpeg|200px|center|thumb|Fig 8(a) [http://americanrenewableenergycorp.com/towers Tubular tower]]]

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| '''Lattice tower''': A Lattice tower can be constructed with perfectly shapped steel rods that are put together to form a lattice. These towers are very strong and inexpensive to manufacture and easy to transport and erect.

|[[Image:lattices.jpeg|center|200px|thumb|Fig 8(b) [http://www.mywindpowersystem.com/2010/03/wind-power-stats-quiet-critics/ Lattice tower]]]

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| '''Guyed wind tower''': These are very strong and most economical when properly installed. But it requires more space around the tower for guy wires

|[[Image:guyed.jpeg|center|200px|thumb|Fig 8(c) [http://itgiproducts.com/energy/windTowers.asp Guy tower]]]

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| '''Tilt up wind towers:'''These type of towers are used for consumer wind energy. These turbines have locking system, while working the turbine is locked. It can easily ulocked and lowered to ground to perform repairs.

| [[Image:tiltup.jpeg|center|200px|thumb|Fig 8(d) [http://itgiproducts.com/energy/windTowers.asp Tiltup tower]]]

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| '''Free standing tower:'''These can be used for small wind turbines with cautions.

| [[Image:free.jpeg |center|thumb|Fig 8(e) [http://itgiproducts.com/energy/windTowers.asp Free stand tower]]]

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=== Blades===