DESCRIPTION: This project was a design/build effort for a 100.8 kW-DC fixed ground mount solar PV array for the Toppenish School District at their High School. The system is comprised of 336 Itek Energy 300 Watt modules. Power is converted by 4 SMA America 24000TL inverters and is connected to the Pacific Power grid at 480 volts, 3 phase. The system offsets their utility usage by 154,000 kWh saving the City almost $16,000 per year. The system will be used for the Science, Technology, Engineering and Mathematics (STEM) program to teach students about renewable and solar photovoltaic energy.
DESCRIPTION: This design/build project provided a 99.36kw PV system for the City of Colville. PCI and its subsidiary company, PCI Renewable, Inc., guidance was instrumental in securing additional funding for the project, which included a Washington State grant, and production incentives offered through Avista.
The system is comprised of two hundred eighty eight (288) US made SolarWorld SW345-XL modules, 48 of each per tracker. Each of the six arrays track the sun independently in order to maximize production. Power is converted by 12 Itek Energy PVI-7600 Inverters and the system is connected at 480 volts, 3-Phase. At the time of commissioning, the system was the largest of its kind in Washington State.
The system is guaranteed to produce 144,435 Kwh per year, which equates to cost reduction of $13,374 at the current utility rate. Real time and historical production may also be viewed over the web.
LOCATION: Pullman, Washington
CLIENT: Washington State University – Pullman, Washington
DELIVERY METHOD: Design-Bid-Build (DBB)
SERVICES PROVIDED: Electrical System Design
DESCRIPTION: In 2015, WSU became part of a U.S. Department of Energy (DOE)-sponsored project to research, develop and demonstrate technologies needed to create “smart” buildings, campuses and cities to better manage energy usage. Led by Pacific Northwest National Laboratory (PNNL) and including the University of Washington (UW), the pioneering regional partnership brings the three campuses together to demonstrate transaction-based energy management for the first time, testing the large-scale use of transactive controls involving multiple buildings and devices. The transactive idea combines financial signals and control techniques to shift energy usage in devices, buildings and campuses.
As part of the project, WSU researchers will install solar panels on the Pullman campus for the first time and integrate them into Pullman’s “Smart City’’ test bed and WSU’s microgrid system. The WSU researchers will be showing how the WSU Pullman campus can power critical city infrastructure in the event of a power outage.
The solar array communicates automatically with generators at WSU as well as with a unique, one megawatt energy storage battery in Pullman. The campus system communicates automatically with electric meters at both the PNNL and UW campuses.
The solar array consists of a 33.66 kWdc rooftop mounted system, and a 48.96 kWdc ground mount system, which also includes a 6.1 kWdc student demonstration system. Installed system size was 82.62 kWdc with capacity for an additional 30.6 kWdc.
More information can be found at:
Washington State University – Energy Systems Innovation Center
DESCRIPTION: This project was a design/build effort for a 68 kW fixed ground mount solar PV array for the City of Palouse at their well pump site. The system offsets their utility usage by 82,000 kWh saving the City almost $9000 per year.
The system is comprised of 216 315w modules. Power is converted by 9 Itek Energy PVI 6600TL inverters and is connected to the Avista grid at 480 volts, 3 phase. The system offsets their utility usage by 82,000 kWh saving the City almost $9,000 per year.
DESCRIPTION: PCI designed this 15.48 kW, tilt adjustable ground mounted photovoltaic system. This system provided the capability to compare the production of micro-inverters against both optimized and non-optimized string inverter technologies, as well as 3 types of module construction. System monitoring included inverter and module level production, power quality, and a set of environmental sensors for each module type.
REC Silicon is a leading producer of advanced silicon materials, delivering high-purity polysilicon and silane gas to the solar and electronics industries worldwide.
PCI – Pennell Consulting teamed up with Power City Electric on this fast track design-build project.
Electrical design consisted of normal and emergency power systems, lighting, grounding, and communications systems within multiple buildings on the Moses Lake campus. Each building was connected to a campus distribution system (designed and installed by others). Facilities included:
• K108 MG Silicon Building
• K108 Silane Compressor Building
• K108 Maintenance Building
• K108 Wastewater Treatment Building
• K304 MG Silicon Building
• K305 Water Treatment Building
• K305 Maintenance Building
• K305 Silane Loading Building
• K305 Silane Compressor Building[/two_third_last]
DESCRIPTION: This project includes addition of a 48kW rooftop solar photovoltaics system divided into a north and south array. Design included layout of photovoltaic modules, combiner boxes, inverter, grounding systems, disconnects, AC and DC feeder voltage drop calculations, and intertie into the existing normal power systems.
Design also included interface with the serving utility for net metering.
LOCATION: Genesee, Idaho
CLIENT: Genesee Joint School District #282
DELIVERY METHOD: Design-Build (DB)
CONTRACTOR: Power City Electric – Spokane, Washington
SERVICES PROVIDED: Electrical System Design
DESCRIPTION: PCI was approached by the Chairman of the Church’s Solar Committee to discuss the design and construction of a large roof mounted Photovoltaic System (PV) to help the Church realize their renewable energy goals. The Solar Committee had been working with several other local engineers and contractors in the area to help build momentum for the project within the congregation. PCI was committed from the start to explore variations of system sizes and methods for maximizing the power production of the system while maintaining a competitive proposal which made the project financially feasible.
The Church had originally raised money to complete the solar array through donations made by members of the congregation but then soon realized that a partnership with Washington Based Non-Profit Sustainable Works would allow them access to financing options to increase the size of the solar array. Sustainable Works was able to secure additional financing for the project while taking on the role as the non-profit general contractor.
At the time, this installation represented the largest Church based photovoltaic (PV) solar array in Washington State.
This project consisted of adding 18.75kW of roof mounted solar photovoltaic panels. The installation included 75 SolarWorld 250W panels along with individual Enphase M215 micro inverters for each panel.
Current production can be viewed below: