Questions and Answers Amendment 0002.pdf
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- Attached to
- Install Solar System
- Solicitation number
- 12805B23Q0597
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This document contains questions and answers regarding Amendment 0002 to Solicitation Number 12805B23Q0597 for the Install Solar System opportunity with the Department of Agriculture Agricultural Research Service Field Research Implementation and Information Delivery Plains Area. Key details include specifications for the location and configuration of the photovoltaic arrays to allow for agricultural research, a 50kW AC 3-phase 208V inverter system, grid interconnection at an existing office and lab building, and clarification that geotechnical reports will not be provided.
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Ques�ons and Answers Amendment 0002
Q1: Please confirm that the PV arrays will be located adjacent to the barn structure. The solicita�on shows a loca�on further from the barn, but during the site visit the loca�on was stated to be near the barn.
A1: The PV arrays need to be located in the area South of the rain intercept shelter (“barn structure”) but as distant from the structure as possible, staying withing the boundaries of the pasture. The structure will affect the microclimate at the PV arrays, thus affec�ng our agrivoltaics research.
Q2: Is the 208V, 3 Phase output from the inverter(s) a rigid requirement? We are considering a higher voltage output, but using a transformer to ensure the voltage is 208V before connec�ng to the grid.
A2: Yes, we need a 3 Phase output.
Q3: What azimuth angle is expected to be used for the solar array (ex. Due south with manual eleva�on �lt angles)?
A3: 180 degrees.
Q4: Are the solar arrays expected to be placed in a configura�on of 4 rows and 1 column, or 4 columns in 1 row?
A4: Configura�on and spacing need to allow for agricultural research and allow for future expansion.
Each array needs to be spaced apart at a distance equal to its size. For example, if the array is 52 x 12 feet, there needs to be an empty area of at least 52 x 12 feet surrounding each array.
Q5: Please clarify that the following was a typo in document “Attachment+1+Scope+of+Work” 7.0 Specific Requirements item #4 “The contractor shall provide and install a 50kW (AC) 3-phase 208V inverter and two (2) 25kW inverters (or equivalent).” Did the USDA mean “OR” instead of “AND” given this system is rated at 50kw?
A5: This is a typo, should read “OR”. The scope of work has been updated to reflect the change.
Q6: Will the USDA be providing power to the site through a connec�on from a local building or panel?
A6: Yes, connec�on point is �ed to the grid.
Q7: Will the USDA please provide geotechnical reports of the project site? If none are available currently, will the USDA be providing Geotechnical reports?
A7: No to both.
Q8: What equipment is currently installed at the future point of interconnec�on?
A8: It’s an office and lab building.
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