1. December 2009 - SCTE proposes solar solution in support of our Smart Energy
Management Initiative – SEMI(Conceptual artwork from Alpha Technologies)

2. 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

3. December 2009 – Output of sun chart for 140 Philips Rd, Exton PA 19341

4. February 2010 - SCTE selects Alpha Energy as the solar project solution provider

5. 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

6. 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

7. March 2010 - Site inspection illustrating panel height (5’ 9”) for township approval

8. 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

9. Monthly Production Dollars

10. 11.28 kW Electricity Production

11. May 2010 – Alpha drafts engineering documents and hardware is ordered

12. June 2010 - SMA inverters, Sharp panels and Shletter aluminum mounting system

13. July 2010 - Lift used to move materials onto the roof deck

14. July 2010 - First load of materials unloaded onto the roof

15. July 2010 - Cutting the “spaghetti matting” to shape

16. July 2010 - Placing the pans precisely over the building’s support joists

17. July 2010 - Lifting the pavers that will weigh the pans down

18. July 2010 - Getting ready to finish up placing the pans

19. July 2010 - Placing the support frames into position over the center of the pans

20. July 2010 - Placing the support frames into position over the center of the pans

21. July 2010 - Placing the support frames into position over the center of the pans

22. July 2010 - Assembling the rails and frame support

23. July 2010 - Assembling the rails and frame support

24. July 2010 - Checking the second section rack placement and preparing that build

25. July 2010 - Making progress on the racking assembly

26. July 2010 - First section of racking assembled

27. July 2010 - Making progress on the rack installation

28. July 2010 - Racking assembly completed

29. July 2010 - Racking assembly completed

30. July 2010 - Racking assembly completed

31. July 2010 - Average July full sun roof top temperature (164 degrees Fahrenheit)

32. July 2010 - Beginning work of hanging the panels

33. July 2010 - Hanging the first panel – ensure that the placement is square

34. July 2010 - Checking the square reference point

35. July 2010 - Tying the square reference string into place

36. July 2010 - Squaring off the second row of panels

37. July 2010 - Beginning the install of second row of panels

38. July 2010 - Placing the upper row of panels

39. July 2010 - Placing the upper row of panels

40. July 2010 - Hanging the upper row of panels

41. July 2010 - Progress hanging the second row of panels

42. July 2010 - Temperature of the back of panels (full sun - 136 degrees Fahrenheit)

43. July 2010 - Installing the conduit mounting brackets to the frame

44. July 2010 - Installing the conduit mounting brackets to the frame

45. July 2010 - Getting the combiner box ready on the rooftop

46. July 2010 - Combiner box ready for conduit and cabling

47. July 2010 - Preparing to mount the conduit

48. July 2010 - All panels racked and ready for wiring procedures

49. July 2010 - Look down the back of the array after panel wire clean up is completed

50. July 2010 - Cleaning up positive and negative panel connection cables with wire ties

51. July 2010 - Cleaning up the positive and negative panel cables with panel clips

52. July 2010 - First row of wind shield deflector braces installed

53. July 2010 - First row of wind shield deflector braces installed

54. July 2010 - Grounding clip installed on every panel and rack piece

55. July 2010 - Fishing the DC and ground wire through the conduit under the array

56. July 2010 - Installing the first disconnect box

57. July 2010 - Working on the disconnect boxes

58. July 2010 - Lightning arrestor attached to the roof top disconnect boxes

59. July 2010 - Conduit taking the DC power from the disconnect boxes to the combiner box

60. July 2010 - Combiner box taking the power down the side of the building

61. July 2010 - Disconnect box on the roof

62. July 2010 - Disconnect boxes on the roof

63. July 2010 - Two disconnect switches on the roof

64. July 2010 - Sensor control box mounted adjacent to the array

65. July 2010 - Anemometer and ambient air temperature devices

66. July 2010 - Back of panel temperature sensor

67. July 2010 - Look down the back of the array at the wind shields

68. July 2010 - Completed arrays

69. July 2010 - Completed arrays

70. July 2010 - Completed arrays

71. July 2010 - Completed arrays

72. July 2010 - Completed arrays

73. July 2010 - Completed arrays

74. July 2010 - View from ground level at the side of SCTE’s building

75. July 2010 - View of the panels from ground level behind SCTE’s building

76. July 2010 - Drilling a hole in the cement block to feed the cable into the building

77. July 2010 - Examining the internal workings of the inverter

78. July 2010 - Getting ready to mount the new meter

79. July 2010 – Mounting the new inverters and system boxes

80. July 2010 - Mounting the inverters and new breaker boxes

81. July 2010 - Getting ready to pull cable

82. July 2010 - Preparing to pull the rooftop wires into the building

83. July 2010 - Preparing to pull the rooftop wires into the building

84. July 2010 - Preparing to pull the rooftop wires into the building

85. July 2010 - Completing the AC/DC wiring requirements

86. July 2010 - Completing the AC/DC wiring requirements

87. July 2010 - Preparing for the DC to AC wiring project

88. July 2010 - Installation of new system meter and circuit breakers

89. July 2010 - Brining the DC cable feed into the combiner box inside the building

90. July 2010 - Inverter statistics

91. July 2010 - Inverter output LCD board

92. July 2010 - Inner workings of the inverter shut off switch

93. August 2010 - Overview of the inner workings of the inverter

94. August 2010 - Initial look of the inverter receiving DC power from the panels

95. August 2010 - Initial reading of output coming off the panels

96. August 2010 - Alpha and SCTE team assembling on the roof for the launch ceremonies

97. August 2010 - Launch of the power purchase agreement and solar system

98. August 2010 - Alpha and SCTE team on the roof for opening day

99. Today - SCTE front lobby display

100. 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