scte solar story
TRANSCRIPT
![Page 1: SCTE Solar Story](https://reader031.vdocument.in/reader031/viewer/2022021422/5880c8f81a28abba3b8b6e31/html5/thumbnails/1.jpg)
December 2009 - SCTE proposes solar solution in support of our Smart Energy Management Initiative – SEMI(Conceptual artwork from Alpha Technologies)
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December 2009 - Online mapping reference check to see how much unobstructed southern facing rooftop SCTE has on our building (space for a total of 18 kW)– SCTE receives bids for the project
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December 2009 – Output of sun chart for 140 Philips Rd, Exton PA 19341
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February 2010 - SCTE selects Alpha Energy as the solar project solution provider
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April 2010 - After submitting permit requests SCTE and Alpha needed to appear before the township board to get approval of proposed installation – safety and aesthetics were taken into consideration
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July 2010 - An interconnect application needed to be filed with the local electricity grid provider, giving SCTE and Alpha permission to connect the new solar system to their system
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March 2010 - Site inspection illustrating panel height (5’ 9”) for township approval
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May 2010 - Power purchase agreement (PPA) and contract negotiations completed between Alpha and SCTE to insure fair system options for both companies
Power Purchase Agreement
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Monthly Production Dollars
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11.28 kW Electricity Production
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May 2010 – Alpha drafts engineering documents and hardware is ordered
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June 2010 - SMA inverters, Sharp panels and Shletter aluminum mounting system
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July 2010 - Lift used to move materials onto the roof deck
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July 2010 - First load of materials unloaded onto the roof
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July 2010 - Cutting the “spaghetti matting” to shape
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July 2010 - Placing the pans precisely over the building’s support joists
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July 2010 - Lifting the pavers that will weigh the pans down
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July 2010 - Getting ready to finish up placing the pans
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July 2010 - Placing the support frames into position over the center of the pans
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July 2010 - Placing the support frames into position over the center of the pans
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July 2010 - Placing the support frames into position over the center of the pans
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July 2010 - Assembling the rails and frame support
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July 2010 - Assembling the rails and frame support
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July 2010 - Checking the second section rack placement and preparing that build
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July 2010 - Making progress on the racking assembly
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July 2010 - First section of racking assembled
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July 2010 - Making progress on the rack installation
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July 2010 - Racking assembly completed
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July 2010 - Racking assembly completed
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July 2010 - Racking assembly completed
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July 2010 - Average July full sun roof top temperature (164 degrees Fahrenheit)
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July 2010 - Beginning work of hanging the panels
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July 2010 - Hanging the first panel – ensure that the placement is square
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July 2010 - Checking the square reference point
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July 2010 - Tying the square reference string into place
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July 2010 - Squaring off the second row of panels
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July 2010 - Beginning the install of second row of panels
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July 2010 - Placing the upper row of panels
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July 2010 - Placing the upper row of panels
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July 2010 - Hanging the upper row of panels
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July 2010 - Progress hanging the second row of panels
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July 2010 - Temperature of the back of panels (full sun - 136 degrees Fahrenheit)
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July 2010 - Installing the conduit mounting brackets to the frame
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July 2010 - Installing the conduit mounting brackets to the frame
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July 2010 - Getting the combiner box ready on the rooftop
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July 2010 - Combiner box ready for conduit and cabling
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July 2010 - Preparing to mount the conduit
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July 2010 - All panels racked and ready for wiring procedures
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July 2010 - Look down the back of the array after panel wire clean up is completed
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July 2010 - Cleaning up positive and negative panel connection cables with wire ties
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July 2010 - Cleaning up the positive and negative panel cables with panel clips
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July 2010 - First row of wind shield deflector braces installed
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July 2010 - First row of wind shield deflector braces installed
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July 2010 - Grounding clip installed on every panel and rack piece
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July 2010 - Fishing the DC and ground wire through the conduit under the array
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July 2010 - Installing the first disconnect box
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July 2010 - Working on the disconnect boxes
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July 2010 - Lightning arrestor attached to the roof top disconnect boxes
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July 2010 - Conduit taking the DC power from the disconnect boxes to the combiner box
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July 2010 - Combiner box taking the power down the side of the building
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July 2010 - Disconnect box on the roof
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July 2010 - Disconnect boxes on the roof
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July 2010 - Two disconnect switches on the roof
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July 2010 - Sensor control box mounted adjacent to the array
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July 2010 - Anemometer and ambient air temperature devices
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July 2010 - Back of panel temperature sensor
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July 2010 - Look down the back of the array at the wind shields
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July 2010 - Completed arrays
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July 2010 - Completed arrays
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July 2010 - Completed arrays
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July 2010 - Completed arrays
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July 2010 - Completed arrays
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July 2010 - Completed arrays
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July 2010 - View from ground level at the side of SCTE’s building
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July 2010 - View of the panels from ground level behind SCTE’s building
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July 2010 - Drilling a hole in the cement block to feed the cable into the building
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July 2010 - Examining the internal workings of the inverter
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July 2010 - Getting ready to mount the new meter
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July 2010 – Mounting the new inverters and system boxes
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July 2010 - Mounting the inverters and new breaker boxes
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July 2010 - Getting ready to pull cable
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July 2010 - Preparing to pull the rooftop wires into the building
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July 2010 - Preparing to pull the rooftop wires into the building
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July 2010 - Preparing to pull the rooftop wires into the building
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July 2010 - Completing the AC/DC wiring requirements
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July 2010 - Completing the AC/DC wiring requirements
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July 2010 - Preparing for the DC to AC wiring project
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July 2010 - Installation of new system meter and circuit breakers
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July 2010 - Brining the DC cable feed into the combiner box inside the building
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July 2010 - Inverter statistics
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July 2010 - Inverter output LCD board
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July 2010 - Inner workings of the inverter shut off switch
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August 2010 - Overview of the inner workings of the inverter
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August 2010 - Initial look of the inverter receiving DC power from the panels
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August 2010 - Initial reading of output coming off the panels
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August 2010 - Alpha and SCTE team assembling on the roof for the launch ceremonies
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August 2010 - Launch of the power purchase agreement and solar system
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August 2010 - Alpha and SCTE team on the roof for opening day
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Today - SCTE front lobby display
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System Specifications• 11.28 kW DC• 10 kW AC• Phase: 3phase • Voltage: 208 • Frequency: 60Hz• 48 Sharp 235 mono-crystalline modules• Schletter ballasted racking system• 2 SMA Sunnyboy 5000US inverters• Data Monitoring – website, data logging, weather
and auto-alerts