Solar power in Wisconsin on rooftops is estimated to be able to provide 40.1% of the electricity used in Wisconsin, using 23,600 MW of solar panels. Net metering is available for systems up to at least 20 kW, and excess generation is credited at retail rate to customers next bill. Some utilities allow net metering up to 100 kW. For Xcel customers, kilowatt credits are rolled over monthly and are reconciled annually at avoided cost. Best practices recommend no limits, either individually or aggregate, and perpetual roll over of kilowatt credits. A 2016 estimate indicates that a typical 5 kW solar array installed in Wisconsin will pay for itself in 13 years and go on to provide an additional profit of $18,860 during its 25-year life. Wisconsin's renewable portfolio standard requires 10% renewable sources for electricity by 2015.
Implications
In 2007, Wisconsin's largest solar array was the 44.4 kW array on the Urban Ecology Center in Milwaukee. In 2011, the largest array was the 360 kW parking lot array in Verona, which is being expanded to 2.2 MW. A 3.177 MW array is planned for a distribution center in Oconomowoc. In June 2016, the 2.3 MW Rock River solar project near Beloit became the largest solar farm in Wisconsin. The KI convention center located in Green Bay, WI currently has the largest solar PV installation in Northeastern Wisconsin. The new 115-kilowatt array comprises 480 PV solar panels. As of May 2014 there are about 2,250 homes powered by solar energy in Wisconsin. Wisconsin ranks 24th in the nation for the number of solar jobs. Since 2012, Wisconsin has added 800 jobs in the solar industry.
Water Treatment Facilities
In Superior, WI the cities wastewater treatment plant has installed four So-larBee units to provide adequate aeration without the use of the cities 75-hp units. After this installation the 75-hp blower units could be completely shut off during no-flow periods and in result the city of Superior saved $18,000 per month. ImageSize = width:420 height:240 PlotArea = width:350 height:150 left:40 bottom:40 AlignBars = late DateFormat = x.y Period = from:0 till:6 TimeAxis = orientation:vertical ScaleMajor = unit:month increment:1 start:0 TextData = pos: textcolor:black fontsize:M text:hrs pos: textcolor:black fontsize:S text:Month pos: textcolor:black fontsize:M text:Milwaukee Sun Hours/day Colors = id:yellow value:yellow PlotData= width:20 textcolor:black bar:Jan color:yellow from:0 till:3.32 text:3.32 shift: bar:Feb color:yellow from:0 till:3.96 text:3.96 shift: bar:Mar color:yellow from:0 till:4.28 text:4.28 shift: bar:Apr color:yellow from:0 till:5.11 text:5.11 shift: bar:May color:yellow from:0 till:5.58 text:5.58 shift: bar:Jun color:yellow from:0 till:5.88 text:5.88 shift: bar:Jul color:yellow from:0 till:5.66 text:5.66 shift: bar:Aug color:yellow from:0 till:5.60 text:5.60 shift: bar:Sep color:yellow from:0 till:5.19 text:5.19 shift: bar:Oct color:yellow from:0 till:4.34 text:4.34 shift: bar:Nov color:yellow from:0 till:2.96 text:2.96 shift: bar:Dec color:yellow from:0 till:2.49 text:2.49 shift:
