ABANDONMENT: Any wind energy system (WES) and/or solar energy system (SES) that has not been repaired to operating condition within the reasonable time frame identified by Pingree Grove, as provided in this chapter.
AMBIENT SOUND: The all encompassing sound at a given location, usually a composite of sounds from many sources near and far. For the purpose of this chapter, the "ambient sound level" shall mean the quiescent background level, that is, the quietest of ten (10) second average sound levels measured when there are no nearby or distinctly audible sound sources (e.g., dogs, cars in line of sight, or jets). Daytime ambient measurements should be made during midmorning, weekday hours while nighttime measurements should be made after twelve o'clock (12:00) midnight.
APPLICANT: The owner, who is in the process of submitting or has submitted an application to install a renewable energy system project in Pingree Grove.
BUILDING MOUNTED SOLAR ENERGY SYSTEMS (BSES): Solar energy systems that are structurally attached either to the roof or side of a building.
BUILDING MOUNTED WIND ENERGY SYSTEMS (BWES): Wind energy systems that are structurally attached either onto the roof of or to the side of a building.
CONCENTRATING SOLAR POWER: An alternative energy system that uses mirrors to reflect and concentrate sunlight onto receivers that collect the solar energy and convert it to heat.
DAYTIME HOURS: The hours of the day from seven o'clock (7:00) A.M. to ten o'clock (10:00) P.M., local time.
DECIBEL (dB): The unit of sound level based on a reference where zero dB represents the threshold of hearing at one thousand (1,000) Hz for a healthy young adult.
DECOMMISSIONING: Once a renewable energy system has been deemed inoperable or abandoned its components must be disassembled and removed from the premises, including the foundation. Upon removal, the site shall be restored to its original preconstruction condition.
FAA: The federal aviation administration of the United States department of transportation.
FCC: The federal communications commission.
FINANCIAL ASSURANCE: A reasonable assurance from a creditworthy party, examples of which include a surety bond, trust instrument, cash escrow, or irrevocable letter of credit.
FREESTANDING SOLAR ENERGY: An accessory structure solar energy system that is not attached to another structure or is ground mounted.
GEOTHERMAL ENERGY SYSTEM: A mechanical heating, ventilation, and air conditioning system containing buried coils in order to utilize constant subsurface temperatures to heat and cool structures.
GRID INTERTIE WES SYSTEM: A system that converts wind energy to electrical energy that is connected to an electric circuit served by an electric utility company.
HIGH QUALITY AQUATIC RESOURCE: Waters of the United States or isolated waters of Kane County that are determined to be critical due to their uniqueness, scarcity, function and/or value.
HORIZONTAL AXIS WIND TURBINE (HAWT): This is the most typical type of turbine used. They have the main rotor shaft and generator at the top of the tower, and must be pointed into the wind. Small turbines are pointed by a simple wind vane, while large turbines generally use a wind sensor coupled with a servo motor. Most have a gearbox, which turns the slow rotation of the blades into a quicker rotation that is more suitable to drive an electrical generator.
IDNR: The Illinois state department of natural resources.
LARGE WIND ENERGY SYSTEMS (LWES): Wind energy systems with turbine towers and fully extended blades measuring taller than one hundred twenty five feet (125') from the ground. LWES include one or more wind turbines, electronic conversion and distribution systems. They typically produce energy to be sold commercially and have a nameplate capacity of seven hundred fifty (750) kW to 2.5 MW.
MET TOWER: A meteorological tower with an anemometer, used for the measurement of wind speed.
NACELLE: The part containing the shaft, gearbox, and generator in a typical horizontal axis turbine.
NAMEPLATE WATTAGE: The amount of energy produced from a WES at maximum or optimum wind speeds within one hour, as indicated by the manufacturer.
NEIGHBORING PROPERTY: Any property within five hundred feet (500') of a renewable energy system.
NIGHTTIME HOURS: The time of the day after ten o'clock (10:00) P.M. until seven o'clock (7:00) A.M., local time.
NOISE: Sound that adversely affects the psychological or physiological well being of people.
NONPARTICIPATING PROPERTY: A property that is not owned by the owner of the property on which the renewable energy system is proposed or installed.
OPERATIONAL CONDITION: WES facilities being capable of operating at full capacity while meeting all sound, shadow flicker and other permit conditions.
OPERATOR: The entity responsible for the day to day operation and maintenance of the renewable energy system, including any third party subcontractors.
OWNER: The person(s), who hold(s) title of the property on which a renewable energy system is installed; or the entity or entities with an equity interest in the renewable energy system, including their respective successors and assigns.
PARTICIPATING PROPERTY: A property that is owned by the owner of the property on which the renewable energy system is proposed or installed.
PROFESSIONAL ENGINEER: A qualified individual who is licensed as a professional engineer in the state of Illinois.
RENEWABLE ENERGY SYSTEM: A WES, SES, or "geothermal energy system" as defined in this chapter.
SHADOW FLICKER: The on and off strobe light effect caused by the shadow of moving blades cast by the sun passing above the turbine. Shadow flicker intensity is defined as the difference or variation in brightness at a given location in the presence and absence of a shadow.
SILHOUETTE: The area covered by moving blades of WES turbine, as viewed from the front elevation, described in square feet.
SMALL WIND ENERGY SYSTEMS (SWES): Freestanding, tower mounted wind energy systems with a system height measuring less than one hundred twenty five feet (125') from the ground. SWES facilities are accessory structures that generate power for local distribution and consumption. Generators typically range from one kW to one hundred (100) kW in nameplate wattage.
SOLAR ENERGY SYSTEM (SES): A system that uses the power of the sun to capture, distribute and/or store energy for on site consumption of utility power.
SOUND: A disturbance or oscillation that propagates outwardly as acoustic waves through the air.
SOUND FREQUENCY: The number of oscillations per second expressed in hertz (Hz). How we perceive sound is partly dependent on frequency. High frequency sound has more oscillations per second, whereas low frequency sound has fewer.
A. Audible Or Tonal Sound: Sound frequencies between twenty (20) and twenty thousand (20,000) Hz. With WES, this may include mechanical sounds from rotating machinery experienced as "hum" or "pitch" occurring at distinct frequencies.
B. Broadband: A wide range of frequencies above one hundred (100) Hz. With WES, the aerodynamics from the displacement of air from the turning blades of a wind turbine creates a "swishing" or "whooshing" sensation.
C. Low Frequency: Sound with frequencies below one hundred (100) Hz, including audible sound and infrasound.
D. Infrasound: Sound frequencies below twenty (20) Hz, which if sufficiently intense, can be perceived by many individuals.
SOUND LEVEL: The A-weighted sound pressure level in decibels (dB) (or the C-weighted level if specified) as measured using a sound level meter that meets the requirements of a type 2 or better precision instrument according to ANSI S1.4. The "average" sound level is time averaged over a suitable period (say 1 minute) using an integrating sound level meter that meets the requirements of ANSI S12.43.
STRUCTURAL ENGINEER: An engineer who is licensed and registered to practice structural engineering in the state of Illinois under the Illinois structural engineering act and whose principal professional practice is in the field of structural engineering.
STRUCTURAL WEIGHT: The combined weight of the tower, wind turbine generator, and any other component(s) otherwise supported by the base foundation.
SUBSTATION: The apparatus that connects the electrical collection system of the WES facilities and increases the voltage for connection with the utility's transmission lines.
SUN GLINT: The reflection of sunlight off of a surface of the solar panels or collector structure of solar energy systems and blades, tower, or other component of the wind energy system.
SYSTEM HEIGHT: The distance from the established grade level directly below the renewable energy system to the highest point of the renewable energy system, including the highest reach of the blades of any WES.
TOWER: The structure on which the wind system or solar system is mounted.
TURBINE: The parts of a WES including the blades, nacelle and tail.
VERTICAL AXIS WIND TURBINE (VAWT): A small scale wind turbine, in which the main rotor shaft is arranged vertically creating an "eggbeater" appearance. The generator and gearbox are located near the ground so the tower does not have to support it and it is more accessible for maintenance.
WATT (Symbol: W): A derived unit of power in the international system of units (SI). It measures rate of energy conversion. One watt is equivalent to one joule (J) of energy per second. The kilowatt (symbol: kW) is equal to one thousand (1,000) watts. The megawatt (symbol: MW) is equal to one million (1,000,000) watts.
WIND ENERGY SYSTEM (WES): A wind energy production, conversion and distribution system consisting of a wind turbine, tower, and associated electronics equipment. In other publications this is known as wind energy conversion system (WECS). (Ord. 2013-O-03, 4-1-2013)