5-3-CLP133522 Exhibit 1.pdf
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- Solicitation number
- SLCoCLP133522-RFB
- Issued by
- Salt Lake County, Utah
About this file
This is an engineering exhibit and project description letter from Lynk Engineers to Salt Lake County Facilities Management regarding a solar photovoltaic system expansion at the Clark Planetarium in Salt Lake City, Utah. The project involves designing, permitting, and installing additional solar photovoltaic panels and inverters on the existing rooftop-mounted array. The expansion requires a minimum of 48 new panels mounted on a ballasted racking system at a 5-degree tilt with minimum 2-foot spacing between rows, to be installed in an approximately 30-foot by 76-foot rooftop area south of the existing array. The new system must generate a minimum of 27,200 kilowatt-hours annually and integrate with new SolarEdge inverters connected to the existing SolarEdge monitoring system. The project also requires upgrading the existing 100-ampere solar PV panel to a 200-ampere 120/208-volt panelboard with 200-ampere main breaker, with new feeders and distribution connections specified as 4 #3/0, #6 ground conductors in 2-inch conduit. Bidders must provide shop drawing-level coordination drawings and complete documentation for submission to Salt Lake City for permitting.
The exhibit includes overall roof plans and enlarged PV array plans to guide bidders on system placement and specifications. The document references electrical specifications for additional technical requirements not detailed in the exhibit. No specific response dates, bid due dates, site visit schedules, bidders' conferences, award dates, contract terms, pricing information, set-asides, or funding sources are identified in this exhibit; such details would be contained in the associated General Requirements and Specifications document referenced in the request for bids.
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324 SOUTH STATE STREET, SUITE 400, SALT LAKE CITY, UT 84111 / 800.678.7077 / LYNKENGINEERS.COM
July 22, 2026 Bill Maughan Facilities Manager 110 South 400 West Salt Lake City, UT 84101
RE: Clark Planetarium - Solar Photovoltaic System Expansion.
Bill, Please pass the following onto bidding contractors regarding the expansion of the existing rooftop mounted solar PV system at Clark Planetarium.
Salt Lake County is looking for qualified bidders to design, permit and install additional solar photovoltaic panels and inverters on the roof of the existing Clark Planetarium building at the Gateway in Salt Lake City, UT.
The existing system consists of (6) rows of 24 panels (144 panels total) at approximately a 40-degree tilt.
Each existing panel is Evergreen Solar 190 W (ES-190-RL) for a total DC size of 27,360 W.
The array combines and runs into two SolarEdge 14.4 kW (208V/3-phase) inverters located within a penthouse mechanical space just north of the array location. The arrays are tied into an existing 120/208V, 100A panelboard located within the same room. The PV disconnect is labeled at this location as well as on a placard mounted to the existing Clark Planetarium utility meter located in the building’s north metering room.
No changes to the existing solar PV array are anticipated.
Proposed PV System Expansion
The rooftop area just south of the existing array has been prepared to accommodate additional PV panels. The space available for the array is approximately 30’ x 76’.
Provide a minimum of 48 new panels mounted on a ballasted racking system at a 5-degree tilt and minimum of 2’ spacing between the rows.
The new system must produce a minimum of 27,200 kWh/year.
Provide new SolarEdge inverters with connections to the existing SolarEdge monitoring system. Inverters may be located on the roof adjacent to the panels or wall mounted adjacent to the existing inverters within the mechanical penthouse. Include all programming necessary to update the monitoring system to include the expanded PV system.
The existing Siemens 100A solar PV panel will need to be removed and replaced and upgraded to a 200A 120/208V panelboard with 200A main breaker. Feed this panel from the same 5DPLB distribution panel and replace the existing 100A feeder breaker with a new 200A breaker. Feed the new panel with 4 #3/0, #6 GR in 2” CND.
Provide shop drawing level coordination drawings and full set of documentation to be submitted to Salt Lake City for permitting.
Refer to the following sketches for additional information.
EXHIBIT 1
Overall Roof Plan
Enlarged PV Array Plan
Refer to the electrical specifications for additional requirements.
Sincerely, Tyler Squire, PE
Principal Electrical Engineer
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