By the end of the decade, it's expected to be worth over $50 billion and generate 160 gigawatt-hours, enough to attract the attention of major companies that might not otherwise be interested in a decidedly pedestrian technology.

2016年12月六级真题（第一套）阅读 Section C

Today, energy storage is a $33 billion global industry that generates nearly 100 gigawatt-hours of electricity per year.

2016年12月六级真题（第一套）阅读 Section C