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Projects Updates for Topic: solar


  1. Land Use Data for US Solar Farms

    Associated Project(s): 

    National Renewable Energy Laboratories conducted research into solar land use requirements, but were unable to find a comprehensive evaluation from the literature. NREL created this report to analyze data related to land use in large solar arrays. The paragraph below explains the efficiency of land by type of solar project, and the link takes you directly to the report.

    Generation-weighted averages for total area requirements range from about 3 acres/GWh/yr for CSP towers and CPV installations to 5.5 acres/GWh/yr for small 2-axis flat panel PV power plants. Across all solar technologies, the total area generation-weighted average is 3.5 acres/GWh/yr with 40% of power plants within 3 and 4 acres/GWh/yr. For direct-area requirements the generation-weighted average is 2.9 acres/GWh/yr, with 49% of power plants within 2.5 and 3.5 acres/GWh/yr. On a capacity basis, the total-area capacity-weighted average is 8.9 acres/MWac, with 22% of power plants within 8 and 10 acres/MWac. For direct land-use requirements, the capacity-weighted average is 7.3 acre/MWac, with 40% of power plants within 6 and 8 acres/MWac. Other published estimates of solar direct land use generally fall within these ranges.

  2. Solar Farm pending State Purchasing Officer (SPO) approval

    Associated Project(s): 

    The Solar Farm Purchase Agreement is waiting on approval from the State Purchasing Officer (SPO).  After the Board of Trustees approval in November 2012, the project went to the SPO's office.  It is now under review and Facilities & Services is working to answer any SPO questions.

  3. Information about solar films

    Associated Project(s): 

    F&S Engineers provide input on solar film technology: "We experienced delamination with these in the past; about 25 years ago.  I’d be curious if the adhesives have gotten any better." - John Prince

    "Films have come a long way.  Like John, I have seen several versions of solar films and have not been impressed with their durability.  The newer films and coatings are much better but the effectiveness is still dependent to the quality of installation.  The films may have some applications on campus but must be evaluated in terms of cost.  The solar transmittance is low enough for me to question whether IHPA would have a problem with our historic buildings.  We would also want to avoid a checker board appearance if the product were applied randomly to a building windows.  I don’t want to dismiss the product but it does need more investigation." - Fred Hahn

  4. update from Joyce Mast

    Associated Project(s): 

    From: Mast, Joyce C
    Sent: Wednesday, June 26, 2013 9:32 AM
    To: Beverage, McKenzie; Johnston, Morgan B
    Subject: RE: ECE Solar Installation Status Update


    Thank you for checking with me about the status of the Solar Installation on the North Parking Garage. I expect that no funds will be spent on the SSC account before the end of the fiscal year. We need results from the feasibility study for placing the panels on the North Parking Garage roof before we will be spending money on the panels or installation.  The study is to be officially completed by September 6, 2013, but we expect to  have drawings and plans by July. This will give us enough information to seek more matching funds so that the panels may be installed in time for the July 2014 completion date for the new building.  

    Best regards,

    Joyce Mast

  5. meeting updates

    Associated Project(s): 

    Yesterday’s meeting covered more refined and detailed breakdown of the following topics, most of which were discussed in prior meetings, with the exception of the newly introduced structural support “Space Frame” option.

    • Panel layout configurations for truss mounted structural frame- 4 sections of seven rows at approx. 100 modules/row or four sections of six rows also 100 modules each. Truss mounting providing specific spacing for mounting dimensions. Also mentioned types of Truss material recommending tubular over welded angle, siting weatherization, degradation, appearance and animal habitat prevention as main reasons.
    • Space Frame structure was introduced as a favorable option.
    • A space frame is a structure system assembled of linear elements so arranged that forces are transferred in a three-dimensional manner. In some cases, the constituent element may be two dimensional.
    • Macroscopically a space frame often takes the form of a flat or curved surface.
    • It should be noted that virtually the same structure defined as space frame here is referred to as latticed structures in a state-of-the-art report prepared by the Task Committee on Latticed Structures [2], which states
    • A latticed structure is a structure system in the form of a network of elements (as opposed to a continuous surface). Rolled, extruded or fabricated sections comprise the member elements.
    • Another characteristic of latticed structural system is that their load-carrying mechanism is three dimensional in nature.
    • Space frame benefits although more costly up front were presented as prefabricated, galvanized and powder coated, sturdy, longer Life cycle and less maintenance, but requiring cranes and other installation costs. They also have installer requirements for mounting solar array as to maintain the integrity of the coating and protective surfaces. Provided flexible mounting spacing to help maximize power output and minimize shading.
    • Inverter layout revisited with schematic diagram presented illustrating component placement and wiring layouts.
    • An overall electrical schematic was presented identifying key component placing and overcurrent protection limits and needs, along with electrical room Layout.
    • Metering usage stated existing meters could be utilized with the addition of a revenue grade power production meter to monitor the array output.
    • Single line diagram was presented identifying current and project components, mentioning the output potential of 1400-1600 amps at 480 volts.
    • Introduced idea of rainwater harvesting for irrigation or toilet flushing usages.
    • Procurement procedures mentioned and moved as major topic for next meeting with concerns of turnkey type purchasing being the industry norm verses purchasing standard variety purchasing from multiple vendors in normal construction.
    • Next meeting PEP is having the structural Engineers present design considerations, and Mr. Jim Lev will have construction procurement representative attend.
  6. solar installation quote received

    From: Kevin Wolz []
    Sent: Sunday, May 26, 2013 10:48 AM
    To: Johnston, Morgan B
    Cc: Litchfield, J Bruce; Werpetinski, Valeri A; Beverage, McKenzie; Andrew Gazdziak; Wolz, Kevin James; Branham, Bruce E
    Subject: Fwd: SOLAR QUOTE

    Hi Morgan,

    I've attached the latest and best solar quote we have received for the solar array to be placed on the roof of the fruit farm building (funded by the SSC via the LINC EV SSF class). I am still waiting for (1) the system specs and schematics from this company which I will forward as soon as I get them and (2) a few more conversations with Crop Sci and ACES people once I get back in the country in June 1. However, I wanted to send this to you so you could advise on what else I need to provide and get from F&S to make this a go. 

    Thanks so much!