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[[File:SolarGIS-Solar-map-USA-en.png|thumb|upright=1.2|Average solar [[insolation]]]]
'''Solar power in Wisconsin''' on rooftops is estimated to be able to provide 35.5% of the electricity used in [[Wisconsin]], using 14,000 MW of solar panels.<ref>[http://www.nrel.gov/docs/fy16osti/65298.pdf Rooftop Solar Photovoltaic Technical Potential in the United States: A Detailed Assessment]</ref> 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.<ref>[http://www.dsireusa.org/incentives/incentive.cfm?Incentive_Code=WI03R&re=1&ee=0 Net Metering]</ref> Best practices recommend no limits, either individually or aggregate, and perpetual roll over of kilowatt credits.<ref>[http://www.irecusa.org/wp-content/uploads/2009/11/IREC_NM_Model_October_2009-1-51.pdf Net Metering Model Rules]</ref>
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.<ref>[http://solarpowerrocks.com/wisconsin/ Wisconsin Solar Power Rebates, Tax Credits, and Incentives]</ref> Wisconsin's [[renewable portfolio standard]] requires 10% renewable sources for electricity by 2015.<ref>[http://programs.dsireusa.org/system/program/detail/190 Renewable Portfolio Standard]</ref>
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