University of Wisconsin-kegonsa solar array

The UW Kegonsa Solar Array is a first-of-its-kind solar energy installation in Wisconsin, designed to support innovative research in agrivoltaics—the dual use of land for solar power generation and agricultural production. Located near UW Madison, the ground mount solar array was developed to help researchers evaluate the environmental impact and performance of solar arrays surrounded by a variety of plant species.

Westphal & Company provided full solar construction services for this unique renewable energy project, installing three distinct types of solar arrays across the site to support comparative research:

• Fixed Axis Array
  This system includes 4,800 Heliene 530-watt solar modules, producing 2.54 MW DC and 2.0 MW AC. Mounted on DCI Racking at a 25° tilt, the fixed array features varied row spacing and embedment depths to accommodate plant diversity beneath and around the panels.

• Single Axis Tracking Array
  Designed for optimal energy production, this 254.4 kW DC system includes 480 solar modules mounted on Array Technologies single axis trackers. It also features a 200 kW Solectria XGI inverter to convert solar power efficiently to AC.

• Elevated Array
  With 144 solar panels elevated to allow for vegetation and instrumentation below, this 76.32 kW DC system supports advanced albedo monitoring and agrivoltaic research. The elevated racking provides 7’5” of ground clearance for flexibility in land use.

In total, the site includes 5,424 Heliene solar panels generating 2.87 MW DC and 2.25 MW AC, supported by Solectria inverters, ISU Volt Combiner Boxes, and an AlsoEnergy data acquisition system (DAS) for monitoring system performance.

The UW Kegonsa Solar Array stands as a model for future solar installations in Wisconsin and across the Midwest, advancing the understanding of how solar farms and agriculture can work hand in hand to create a more sustainable future.