Fenway Park, which is hosting the first game of the World Series between the Boston Red Sox and the Los Angeles Dodgers tonight, is the second-oldest baseball park in the U.S., behind only Chicago's Wrigley Field. But despite the age of the park, opened in 1912, Fenway ranks among the top 10 energy-efficient baseball stadiums in the U.S.
Why it matters: In 2008, Fenway became the first major league sports arena in the U.S. to install and use thermal solar panels, which replaced gas to heat the stadium's water. Combined with over 20 other initiatives, including LED retrofits, Fenway's efforts have resulted in a 12% reduction in total energy consumption since 2014.