(A) 
Definitions.
Definitions for wind energy-related terms are located in Chapter 6 of this GDC.
(B) 
General Regulations.
The following general regulations apply to all wind energy conversion systems (WECs) located within any zoning district. A wind energy conversion system lawfully in existence as of the effective date of this GDC is not required to meet the requirements established herein. Nothing contained in this Division 7 is intended to supersede the provisions of any applicable deed restrictions.
(1) 
Required Plans and Specifications.
In addition to the submittals otherwise required upon making application for a Site Permit or a Building Permit, the application for a Building Permit for a wind energy conversion system must be accompanied by:
(a) 
A site plan of the proposed wind energy conversion system, which must include:
i. 
A survey or a scaled drawing of the site on which the proposed wind energy conversion system will be constructed;
ii. 
A plan view layout of the proposed wind energy conversion system clearly showing:
a. 
The location of the system in respect to the property on which the system will be built;
b. 
All components of the system; the distance of the system to all surrounding property lines; required setbacks; existing structures on the site; and natural features such as watercourses and trees;
iii. 
Elevation drawings that include:
a. 
The design and height of the proposed wind energy conversion system;
b. 
Detailed drawings of all system components;
c. 
Screening requirements; and
iv. 
A line drawing of the electrical components of the system in sufficient detail to allow for a determination that the manner of installation conforms with the edition of the National Electrical Code in effect at the time of construction.
(b) 
Standard installation drawings of the wind turbine structure, including the tower base, and footings, if any.
(c) 
If the system is mounted on a tower, either an engineering analysis of the tower or a copy of the manufacturing specifications demonstrating compliance of the system with the edition of the International Residential Code in effect at the time of construction. An engineering analysis must be certified by a licensed professional engineer registered in the State of Texas.
(d) 
Evidence of the notice to the utility company as required by Subsection 2.70(B)(10) below.
(2) 
Construction Standards.
A wind energy conversion system must be installed according to the manufacturer’s recommendations or under the seal of a professional engineer licensed in the State of Texas.
(3) 
Maximum Height.
Subject to the height limitations imposed by the setback requirements in Subsection 2.70(B)(4) for other than a roof-mounted installation, the maximum height of the system may not exceed forty feet from ground level to the topmost portion of the system inclusive of the turbine and blades. For horizontally-mounted (vertically-spinning) turbines, the measurement of maximum height is made by measuring to the center of the turbine shaft and then adding the length of a blade. Additionally, no system when installed may exceed the height recommended by the manufacturer or the distributor of the system.
(4) 
Location and Setback.
A tower-mounted wind energy conversion system may be anchored only in the rear yard of the lot on which the system is located. A tower-mounted system may not be located nearer to a side or rear lot line than one times the height of the system, inclusive of turbine blades. No part of a wind energy conversion system, including blades or guy wire anchors, may protrude across any property line or public right-of-way.
(5) 
Primary Structure Required.
A wind energy conversion system may exist only as a secondary use. A wind energy conversion system may not be erected on a lot or land tract until a primary structure has been constructed.
(6) 
Sound Pressure Levels.
Sound pressure levels produced by the operation of a wind energy conversion system may not exceed the limitations set forth in Section 22.69 of the City Code.
(7) 
Lighting.
All lighting not required by Federal Aviation Administration (FAA) regulation is prohibited, however, operational lighting installed by the manufacturer of the system as original equipment is allowed. When obstruction lighting is required by FAA regulations, the lighting may not exceed the minimum requirements of those regulations. If so required, a wind energy conversion system tower structure may be artificially lighted only with steady-burning red obstruction lights (FAA type L-810) or flashing red obstruction lights (FAA type L-0684), flashing no faster than twenty flashes per minute. Upward lighting, floodlights or other lighting not required by the FAA is prohibited.
(8) 
Signs.
No advertising or other signs may be placed on a wind energy conversion system.
(9) 
Prohibited in Easements.
No portion of a wind energy conversion system may be located in, on, or across a public easement unless authorized by the easement holder.
(10) 
Notice to Utility Company on Grid-Interconnected Systems.
No grid-interconnected wind energy conversion system may be installed until evidence has been provided to the City that the appropriate electric power provider has been informed of the customer’s intent to install a grid-connected customer-owned wind energy conversion system, and that the customer’s system meets the utility’s approved specifications for interconnection. If a system will interconnect through Garland Power and Light, the system must conform to the provisions of Ordinance No. 5886 and such other interconnection requirements applicable thereto. Off-grid systems are exempt from this requirement.
(11) 
State or Federal Requirements.
A wind energy conversion system must meet or exceed current standards and regulations of the FAA and any other agency of the state or federal government with the authority to regulate wind energy conversion systems. If the standards and regulations are changed, and if the controlling state or federal agency mandates compliance, then the owner of the wind energy conversion system must bring the wind energy conversion system into compliance with those revised standards and regulations within one hundred and eighty-three calendar days following the effective date of the revised standards and regulations, unless a different compliance schedule is mandated by the controlling state or federal agency.
(12) 
Roof-Mounted Systems.
Any wind energy conversion system designed to be mounted on the roof of a structure that does not extend more than sixty inches above the roof line is not required to comply with the provisions of Subsections 2.70(B)(1)a.i, 2.70(B)(1)a.ii and 2.70(B)(4) of this Division 7.
(C) 
Maintenance and Abandonment:
(1) 
A wind energy conversion system must be maintained at all times according to the manufacturer’s specifications.
(2) 
A wind energy conversion system that has become unstable, leans more than five degrees out-of-plumb, or that poses a danger of collapse must be removed or brought into repair within sixty calendar days following notice by the Building Official to the owner of the property upon which the system is located. The Building Official may order immediate repairs or complete removal of the system where there is a risk of an imminent probable collapse and a danger to public health, safety, and welfare. Failure to make the required repairs within the time provided is an offense.
(3) 
If the owner of a wind energy conversion system plans to abandon or discontinue, or is required to discontinue, the operation of the system, the owner must notify the Building Official by certified U.S. mail of the proposed date of abandonment or discontinuation. The notice must be given no less than thirty calendar days prior to abandonment or discontinuation.
(a) 
In the event that an owner fails to give proper notice of abandonment or discontinuance, the wind energy conversion system will be considered abandoned if the wind energy conversion system is not operated for one hundred and eighty-three calendar days.
(b) 
Upon abandonment or discontinuation of use, the property owner must physically remove the wind energy conversion system within ninety calendar days following the date of abandonment or discontinuance of operation. “Physically remove” includes, without limitation, the actual, complete removal of the tower, turbine, and all other components of the wind energy conversion system from the site upon which the system is located.
(Ordinance 6773 adopted 5/19/15)