4.22.22 Vatican solar panels .JPG

Solar panels are seen on the roof of the Paul VI audience hall at the Vatican in this Dec. 1, 2010, file photo. Under Pope Benedict XVI, Vatican City began installing solar panels in 2008. (CNS/Paul Haring)
Solar panels are seen on the roof of the Paul VI audience hall at the Vatican in this Dec. 1, 2010, file photo. Under Pope Benedict XVI, Vatican City began installing solar panels in 2008. (CNS/Paul Haring)