Philadelphia Inquirere: If NFI Industries’ calculations are right, the three acres of solar panels just installed on the roof of its Cherry Hill headquarters will save $750,000 in energy costs over 15 years and become a green feather in its cap. The 1.32-megawatt project could also be a launchpad. It is the first renewable development designed and installed by NFI Solar, a new division in the 77-year-old trucking and logistics company, which the Brown family started as a coal-hauling operation in North …