Elwin Stewart, owner of Happy Valley Vineyard and Winery in Ferguson Township, talks about how his winery uses solar power Thursday during the Happy Valley Solar Tour. Below:  Happy Valley Vineyard and Winery uses solar panels to generate 80-90 percent of its electricity.
Elwin Stewart, owner of Happy Valley Vineyard and Winery in Ferguson Township, talks about how his winery uses solar power Thursday during the Happy Valley Solar Tour. Below: Happy Valley Vineyard and Winery uses solar panels to generate 80-90 percent of its electricity. CDT photos
Elwin Stewart, owner of Happy Valley Vineyard and Winery in Ferguson Township, talks about how his winery uses solar power Thursday during the Happy Valley Solar Tour. Below: Happy Valley Vineyard and Winery uses solar panels to generate 80-90 percent of its electricity. CDT photos

Conference attendees tour local energy projects in State College area

July 30, 2015 11:50 PM

UPDATED July 30, 2015 11:51 PM

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