Solar PanelsJ. F. White Contracting Co. completes two design-build photovoltaic installations for the Massachusetts Department of Correction.
On June 18, 2009, J. F. White commissioned two photovoltaic systems for the Massachusetts Department of Correction as the culmination of a design-build contract awarded by The Commonwealth of Massachusetts, Division of Capital Asset Management. The sites are located at MCI Norfolk and MCI Concord, MA. Both sites are wastewater treatment plants owned and operated by the Department of Correction. The PV arrays are installed on retired drying beds which are no longer used in the treatment process. The Norfolk site, the larger of the two, consists of 368 Schott 290 watt PV modules for a total of 106.7 kW DC STC, powering a Solectria Renewables 95 kW grid-tied inverter which provides 208 volt, three phase power to the facility’s electrical distribution system. The PV modules are supported by ground-mount structures made of formed aluminum channel with integral ballast system. The structure design lends itself to quick assembly and rapid alignment and installation of the PV modules at a fixed orientation and tilt angle. The Concord site consists of 224 Schott 290 watt PV modules for a total of 64.96 kW DC STC, powering a Solectria Renewables 60 kW grid-tied inverter which provides 480 volt, three phase power to the facility. Both sites include revenue grade metering and Solectria’s SolrenView Data Acquisition System for remote monitoring. Connection to the World Wide Web is accomplished through a wireless WAN, which was also designed and installed by J. F. White.
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