Chapter 25 ZONING ORDINANCE.
Article 21. Special Provisions.
Sec. 25-21-20. Alternate energy sources.
(a) Purpose. To encourage and promote the use of alternate energy sources
by providing solar and wind access protection.
(b) Solar Energy Collection
(1) When a solar energy collection system is installed on a lot,
any accessory structure or vegetation on an abutting lot shall not be located so
as to block the solar collector’s access to solar energy. The portion of
the solar collector that is protected is that portion which:
(A) Is located
so as not to be shaded between the hours of 10:00 A.M. and 3:00 P.M. by a
hypothetical twelve-foot obstruction located on the lot line; and
(B) Has an
area of not greater than one-half of the heated floor area of the structure, or
the largest of the structures, served.
(2) This section does not apply to
accessory structures or vegetation existing on an abutting lot at the time of
the installation of the solar energy collection system, or on the effective date
of the ordinance codified in this chapter, whichever is later. This section
controls any accessory structure erected on, or vegetation planted on, abutting
lots after the installation of the solar energy collection system.
copy of the building permit for the solar energy collection system shall be kept
on file in the community development department and the date the building permit
is issued shall be the effective date of this section. The solar facility must
be completed and have a final inspection, approved by the building inspector,
within one calendar year from the date the building permit is
(c) Clotheslines. It shall be unlawful to establish any private
covenant or restriction which prohibits the installation and/or use of a
clothesline in any residential zone.
(d) Wind Energy Conversion Systems
(WECS). Wind energy conversion systems shall be permitted in all zones subject
to the following requirements:
(A) "Wind energy
conversion system" means a machine that converts the kinetic energy in the wind
into a usable form of electrical or mechanical energy (commonly known as a wind
turbine or windmill). The WECS includes all parts of the system except the tower
and the transmission equipment.
(B) "Over speed control" means a mechanism
used to limit the speed of blade rotation to below the design limits of the
(C) "Swept area" means the largest area of the WECs which extracts
energy from the wind stream. In a conventional propeller-type WECS there is a
direct relationship between swept area and the rotor diameter.
wind direction" means the direction from which eighty percent of the energy
contained in the wind flows.
(E) "Total height" means the height of the
tower and the furthest vertical extension of the WECS.
(2) Building Permit
Application for A WECS. Building permit applications for a wind energy
conversion system shall be accompanied by a plot plan drawn in sufficient detail
to clearly describe the following:
(A) Property line and physical dimensions
of the site;
(B) Locations, dimensions, and types of existing structures,
and uses on site;
(C) Location of the proposed WECS;
(D) Location of all
above-ground utility lines on-site or within one radius of the total height of
(E) Location and size of the largest structure taller than
thirty-five feet or tree which may potentially grow taller than thirty-five feet
during the lifetime of the WECS within a five hundred feet radius of the
(3) General Provisions. Installation of all wind energy
conversion systems shall comply with the following requirements:
This chapter covers those WECS whose swept area is five hundred square feet or
less. For conventional propeller WECS, this would be approximately twenty-five
(B) Compliance With Uniform Building Code. Building permit
applications shall be accompanied by standard drawings of the structural
components of the wind energy conversion system and support structures,
including base and footings. The application shall also include engineering data
and calculations to demonstrate compliance of the support structure with seismic
and structural design provisions of the Uniform Building Code. Drawing and
engineering calculations shall be certified in writing by a
California-registered structural engineer. This certification can be supplied by
the manufacturer. Where the structural components of an installation vary from
the standard design or specification, the proposed modifications shall be
certified by a California-registered structural engineer for compliance with the
seismic and structural design provisions of the Uniform Building Code.
equipment and materials shall be used or installed in accordance with such
drawings. The above certifications by a California-registered structural
engineer shall be deemed to satisfy all applicable requirements of the Uniform
(C) Compliance With National Electrical Code. Building permit
applications shall be accompanied by a drawing identifying the location of
metering, protection and control devices, and transformer equipment in
sufficient detail to allow for a determination that the manner of installation
will conform to Articles 250 (Grounding), 280 (Lightning Arrestors), 300 (Wiring
Methods), 310 (Conductors for General Wiring), 430 (Motors), 445 (Generators),
and 450 (Transformers and Transformer Vaults) of the National Electrical Code.
The application shall include a statement from a California-registered
electrical engineer indicating that the electrical system conforms with good
engineering practices and complies with the above articles of the National
Electrical Code. All equipment and materials shall be used or installed in
accordance with such drawings and diagrams. This certification can be supplied
by the manufacturer.
Where the electrical components of an installation vary
from the standard design or specifications, the proposed modifications shall be
reviewed and certified by a California-registered electrical engineer for
compliance with the requirements of the national electrical code and good
engineering practices. The above certification by a California-registered
electrical engineer shall be deemed to satisfy all applicable requirements of
the national electrical code.
(D) Rotor Safety. Each wind energy conversion
system must be equipped with both manual and automatic controls to limit the
rotational speed of the blade below the design limits of the rotor. The
application must include a statement by a California-registered engineer
certifying that the rotor and over speed controls have been designed and
fabricated for the proposed use in accordance with good engineering practices.
The engineer should also certify the compatibility of possible towers with
available rotors. That certification can be supplied by the
(E) Guy Wires. Anchor points for guy wires shall be located
within property lines and not on or across any above-ground electric
transmission or distribution line. Guy wires shall be enclosed by a fence six
feet high or the WECS shall be set back from the property line the total height
of the WECS.
(F) Tower Access. Lattice towers capable of being climbed shall
be enclosed by a locked, protective fence at least six feet high located not
closer than eight feet from the ground. Other towers should have either: (a)
tower-climbing apparatus located not closer than twelve feet from the ground;
(b) a locked anticlimb device installed on the tower; or (c) the tower shall be
completely enclosed by a locked, protective fence at least six feet
(G) Noise. The WECS shall meet the requirements of the Noise Element
of the General Plan.
(H) Electromagnetic Interference. A wind energy
conversion system shall comply with the provisions of 47 C.F.R., Parts 15 and
18. The wind energy conversion system shall be operated such that no harmful
interference is caused. When notified by the city building inspector that a wind
energy conversion system is causing harmful interference, the operator shall
promptly take steps to eliminate the harmful interference.
(I) Signs. At
least one sign shall be posted at the base of the tower warning of high voltage.
The sign shall also include emergency phone number and emergency shutdown
(J) Utility Notification. No wind turbine shall be
interconnected with a utility company’s grid until said company has been
notified in accordance with procedures established by the California Public
(K) Height. The minimum height of the lowest part of
the WECS shall be either thirty feet above the highest structure allowed under
the local zoning requirement or potential tree height, whichever is higher, if
it is within a two hundred foot radius. If an obstruction is within a two
hundred one to five hundred foot radius, the lowest part of the WECS shall be
ten feet above it.
(L) Setbacks. The WECS shall be located such that the
furthest extension of the apparatus does not cross any property lines, except as
provided for under subsection (d)(3)(E) of this section.
(M) Abatement. If a
wind energy conversion system or systems are not maintained in operational
condition and pose a potential safety hazard, the owner or operator shall take
expeditious action to remedy the situation. The city of Woodland reserves the
authority to abate any hazardous situation and to pass the cost of such
abatement on to the owner or operator of the system. If the city of Woodland
determines that the WECS has been abandoned, the system shall be removed within
thirty days of written notice to the owner or operator of the
(N) Liability Insurance. The applicant, owner, leasee, or assignee
shall maintain a current insurance policy which will cover installation and
operation of the wind energy conversion system at all times. Said policy shall
provide a minimum of three hundred thousand dollars property and personal
liability coverage. (Amended during the March 2009 supplement.)