Things are looking brighter inside Ford Motor Co.’s stamping plant in Hamburg. The massive Route 5 complex has installed 1,740 LED tandem fixtures that are 70 percent more efficient than the metal-halide light fixtures they replaced. The project was supported by a $1.35 million grant from National Grid, the utility’s largest-ever grant for energy efficiency. “Something as simple as changing the lighting can contribute benefits not just to the customer but also to the environment,” said Kenneth Daly, National Grid’s president in New York...