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Solar Energy System - A device or structural design feature, a substantial purpose of which is to provide daylight for interior lighting or provide for the collection, storage and distribution of solar energy for space heating or cooling, electricity generating, or water heating. Solar Heat Exchanger - A component of a solar energy device that is used to transfer heat from one substance to another, either liquid or gas. Solar Hot Water System - A system that includes a solar collector and a heat exchanger that heats or preheats water for building heating systems or other hot water needs, including residential domestic hot water and hot water for commercial processes. Solar Mounting Devices -Devices that allow the mounting of a solar collector onto a roof surface or the ground. Solar Storage Unit - A component of a solar energy device that is used to store solar generated electricity or heat for later use. PERMITTED ACCESSORY USE -Active solar energy systems shall be allowed as an accessory use in all zoning classifications where structures of any sort are allowed, subject to certain requirements as set forth below: A. Height -Active solar systems must meet the following height requirements: 1. Building- or roof- mounted solar systems shall not exceed the maximum allowed height in any zoning district. For purposes for height measurement, solar systems other than building-integrated systems shall be considered to be mechanical devices and are restricted consistent with other building-mounted mechanical devices. 2. Ground- or pole-mounted solar systems shall not exceed 15 feet in height when oriented at maximum tilt. B. Set-back -Active solar systems must meet the accessory structure setback for the zoning district and primary land use associated with the lot on which the system is located. 1. Roof-mounted Solar Systems - In addition to the building setback, the collector surface and mounting devices for roof-mounted solar systems shall not extend beyond the exterior perimeter of the building on which the system is mounted or built. Exterior piping for solar hot water systems shall be allowed to extend beyond the perimeter of the building on a side yard exposure. 2. Ground-mounted Solar Systems -Ground-mounted solar energy systems may not extend into the side-yard or rear setback when oriented at minimum design tilt. C. Visibility -Active solar systems shall be designed to blend into the architecture of the building or be screened from routine view from public right-of--ways other than alleys. The color of the solar collector is not required to be consistent with other roofing materials. 1. Building Integrated Photovoltaic Systems -Building integrated photovoltaic solar systems shall be allowed regardless of visibility, provided the building component in which the system is integrated meets all required setback, land use or performance standards for the district in which the building is located. Page 3 of 5