<https://energynews.us/2020/03/10/minnesota-couples-idea-aims-to-keep-solar-panels-free-of-snow-buildup/#article>
<http://schema.org/keywords>
"innovation"
<https://energynews.us/2020/03/10/minnesota-couples-idea-aims-to-keep-solar-panels-free-of-snow-buildup/>