Complex sentence: At night, a network of 4,000 low-voltage tungsten-halogen bulbs illuminate the bridge; in 1993 the innovative use of long-life low-energy lighting was commended by Mary Archer, at the time Chairwoman of the National Energy Foundation.
Split into simpler sentences: At night, a network of 4,000 low-voltage tungsten-halogen bulbs illuminate the bridge. In 1993 the innovative use of long-life low-energy lighting was commended by Mary Archer, at the time Chairwoman of the National Energy Foundation.