A single cell or a group of cells connected together electrically in series, in parallel, or a combination of both, which can charge, discharge, and store energy electrochemically. Batteries utilized in consumer products are excluded from zoning requirements.

An electronic system that protects energy storage systems from operating outside their safe operating parameters and disconnects electrical power to the energy storage system or places it in a safe condition if potentially hazardous temperatures or other conditions are detected.

One or more devices, assembled together, capable of storing energy in order to supply electrical energy at a future time, not to include a stand-alone twelve-volt car battery or an electric motor vehicle.

A structure consisting primarily of earth or earthen materials intended for security, enclosure or screening purposes.

For the purpose of battery energy storage, a cell is defined as the basic electrochemical unit, characterized by an anode and a cathode, used to receive, store, and deliver electrical energy.

A structure bounding an area of land designed to either limit access to the area or screen such area from view or both. Hedges and other natural growth shall not be construed as "fences" as defined herein.

The vertical distance measured from the mean elevation of the center line of the street in front of the building or structure (except that in the Residence A-1 District, the vertical distance shall be measured from the mean of the average elevation of the center line of the street in front of the building or structure and the average elevation of the existing natural grade at the front of the building or structure) to the highest point of the highest roof in the case of a building and to the highest point of the structure in the case of a structure (including a structure on a roof).

An office in a one-family dwelling or, when expressly permitted by this chapter, in a building accessory to a one-family dwelling, used exclusively by the occupants of such dwelling for purposes that do not involve customers, clients, patients, or vendors coming to the premises, do not involve on-site advertising, do not involve any employees on the premises other than such occupants, and do not involve on-site distribution or storage of inventory.

Space used or usable for eating, cooking, sleeping or other living activities typically conducted in a living room, den or similar space in a residence, sink, toilet and bathing facilities, and associated hallways, stairways and other connecting areas.

A parcel of land occupied or capable of being occupied by one or more principal buildings and accessory buildings or uses in accordance with the provisions of this chapter, including such open spaces as are required by this chapter.

The total horizontal area of a lot, exclusive of land in the bed of any street or right-of-way or waterway.

A lot at the junction of and fronting on two or more intersecting streets, having an interior angle of less than 135° at their intersection. A lot abutting upon a curved street shall also be considered a corner lot if the tangents to the curve at the points of intersection of the side lot lines intersect at an interior angle of less than 135°.

The portion of the lot area covered by the area of a building or buildings, structures and accessory buildings, accessory structures and accessory uses, except that only 50% of the area of a tennis court shall be included in computing lot coverage. In the case of an oceanfront lot, the portion of the lot situate between the ocean and the crest of the first rank of ocean beach dunes shall be excluded in calculating the lot area of such lot for the purpose of computing lot coverage.

A lot shaped like a pole with a fully extended flag at the upper portion thereof, the bottom of the pole being at the street line, the pole portion of the lot being for use as access to the flag portion of the lot where the principal structure is or will be constructed.

A lot other than a corner lot.

The street right-of-way line at the front of a lot.

The lot line opposite the front lot line. In the case of a corner lot, the rear lot line may be elected by the owner.

Any lot line not a rear lot line nor a front lot line shall be deemed a side lot line.

A lot extending from one street through to another street. Where a lot extends through from street to street, the applicable front yard and distance from street regulations shall apply on both street frontages, both street right-of-way lines shall constitute front lot lines, and neither street right-of-way line shall constitute a rear lot line.

The dimension measured from side lot line to side lot line along a line parallel to the front lot line, which parallel line shall be at a location no nearer to the front lot line than the required front yard depth and no nearer to the rear lot line than the required rear yard depth.

An industry which is not detrimental to the environment in which it is located by reason of the emission of smoke, noise, odor, dust, vibration or excessive light beyond the limits of its lot or by reason of generating excessive traffic with attendant hazards; which does not require domestic or process water in excess of 40 gallons per employee or discharge any effluent into the ground that does not meet Suffolk County Health Department standards designed to protect against contamination or pollution; which does not include the bulk storage of fuel or flammable materials in any form in excess of 2,000 gallons, except the storage of fuel used on-site in conjunction with heating or use of the building; which does not include the processing or storage of flammable, hazardous or toxic chemicals or substances; and which does not include an open accessory storage yard (outdoor storage) unless completely enclosed by a solid wall or fence not less than six feet in height; and which does not include outdoor processing of materials.

A single building having living quarters used exclusively for residential purposes by a single family, as herein defined. A one-family dwelling may have a home office. A one-family dwelling may have only one kitchen and no other room with cooking facilities. When parts of a structure are connected by a hallway or similar area, such parts shall be considered a single building only if the hallway or similar area is roofed, fully enclosed on the sides, heated by the HVAC system that services the dwelling and its width is at least 1/2 of its length.

A specific main use of a building, structure, lot or land or part thereof which this chapter provides for in a particular district as a matter of right. Any use which is not set forth as a permitted, special exception or accessory use shall be considered a prohibited use.

A use of a building, structure, lot or land or part thereof which is not set forth as a permitted, special exception or accessory use.

A solar energy system whose primary purpose is to harvest energy by transforming solar energy into another form of energy or transfer heat from a collector to another medium using mechanical, electrical, or other means.

A solar energy system that occupies 5,001 square feet of surface area or more.

A solar energy system that occupies 5,000 square feet of surface area or less. A small-scale solar energy system shall be permitted in all zoning districts subject to compliance with other applicable regulations and standards.

A use in one or more districts for which a permit may be granted by the Board of Appeals, if so provided, or by the Planning Board, if so provided, in accordance with standards and conditions set forth in this chapter or by the Board of Trustees, if so provided. In the case of the Board of Trustees, no standards and conditions need be provided. In either case, any permit granted shall be subject to such conditions and safeguards as may be required by the Board involved to protect the public interest.

Anything constructed, erected or placed on or under the ground or upon another structure or building, excluding the following: walkways less than four feet in width, provided that such walkway is not an elevated walkway (an elevated walkway shall constitute a "structure"); driveways; and sewage systems, tanks, pipes and the like which are buried underground.

The lowest point on the north side of the northerly slope of the main barrier beach dunes.

A one-family dwelling that is or may be occupied as a residence by any person for a period of less than 14 consecutive days for which rent or other compensation is paid or payable directly or indirectly to the owner or any other person. The presence of either of the following shall create a rebuttable presumption that the dwelling is being used as a transient rental property: 1) the dwelling is offered for lease or other occupancy on a website or other electronic medium that features short-term rentals or other occupancy without specifying a minimum term of at least 14 consecutive days or 2) the dwelling is offered for lease or other occupancy in any medium for a period of less than 14 consecutive days.

A space on the same lot with a building, situated between the nearest portion of the principal building and the front lot line of the lot and extending from side lot line to side lot line in the case of interior lots. Corner lots shall have two such "front yards" situated between the said nearest portion of the principal building and the front lot line along each street.

A space on the same lot with a building, situated between the nearest portion of the principal building or buildings and the rear lot line of the lot and extending from side lot line to side lot line.

A space on the same lot with a building, situated between the nearest portion of the principal building or buildings and the side lot line of the lot and extending through from the front yard, or from the front lot line where no front yard exists, to the rear yard, or to the rear lot line where no rear yard exists.