University of Minnesota Duluth
University of Minnesota
University of Minnesota Duluth
http://www.d.umn.edu/
612-625-5000
UMD Sustainability

UMD has two primary solar photovoltaic installations: Malosky Stadium and Bagley Outdoor Classroom. Additionally, there are a number of small-scale solar experiments and installations around campus and the Research and Field Studies Center.

*Coming soon: UMD will start construction on an 11kW solar pavilion in May 2017!

Malosky Stadium

Malosky

Click here for information about Malosky Stadium Solar
Malosky Stadium has 28 solar panels that were installed in the fall of 2008. The panel array provides a portion of the electrical needs of the Malosky Stadium building (it is not connected to the grid).  The panels are arranged in 4 rows of 7 panels.

28 Sharp Solar Modules rated 208 Watts each, for a total of 5,824 watts (5.8 kW) of electric power capacity.  Each panel, a Sharp ND-208U1F, is rated to produce 7 Amps of current at 29 Volts in full sunlight. The array is arranged in two parallel chains of 14 panels connected in series, to create a 400 Volt, 14 amp source. The output of the array is connected to an inverter that converts the direct current into alternating current for use in the building.

The Inverter, a SMA Technologies SB-5000US Grid-Connected Inverter, is rated for 5000 Watts of electric power output. The Inverter chops up the 400 Volt DC output of the solar array and creates a 277 Vrms AC waveform, synchronized to one of the phases of the 277/480 V building electrical system.

Live data from the Malosky array is available at www.d.umn.edu/solar

For detailed energy production data, please see the Malosky Solar Array Operating Report Summary (October 2015)

 

Bagley Outdoor Classroom

Bagley

Click here for information about Bagley Outdoor Classroom Solar

The Bagley Outdoor Classroom has 28 solar panels, arranged in 2 rows of 14 panels each, and was installed in 2010. The installation was expected to reduce the building’s non-renewable energy needs to almost nothing over the course of a year, although in practice, the amount of energy generated is closer to 85% – 90% of the building’s needs.

Each of the 28 panels is a 200 watt Sanyo HIT Panel, for a total of 5600 watts (5.6 kW) of capacity. These panels are tied into our utility grid, via a 6000w automatic voltage-sensing inverter, the Sunnyboy WebBox Sunny Boy 6000 US.

Although the building’s ultimate goal is to produce as much energy as it uses each year, we have yet to meet this “energy neutral” goal.  The popular demand and special uses of the building have made this an extraordinary challenge.  UMD tracks monthly energy production and energy use for the Bagley Outdoor classroom, as well as monitoring real-time use and production through an energy program (see a summary of Energy and Metering for Bagley Outdoor classroom, conducted by a supervisor in UMD Facilities Management in August 2012.)

UMD Sustainability
The UMD Sustainability website is administered by the University of Minnesota Duluth's Office of Sustainability.
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