Complex sentence: As Southern California's population grew, so too, did the company, eventually becoming the nation's largest natural gas distribution utility, serving 19.5 million people through 5.5 million gas meters in more than 530 communities.
Split into simpler sentences: As Southern California's population grew, so too, did the company, eventually becoming the largest natural gas utility in the nation. Today, it is the nation's largest natural gas distribution utility, serving 19.5 million people through 5.5 million gas meters in more than 530 communities.