Complex sentence: Realizing the need for a constant source of current, he developed an interest in power generation and invented several dynamos and generators, and eventually co-founded the Weston Electric Light Company, who won the contract to illuminate the Brooklyn Bridge.
Split into simpler sentences: Realizing the need for a constant source of current, he developed an interest in power generation and invented several dynamos and generators. He eventually co-founded the Weston Electric Light Company, who won the contract to illuminate the Brooklyn Bridge.