English to Chinese Tech/Engineering IT (Information Technology) Smart buildings

Behind the glittering, sculpted glass skin of the San Francisco Public Utilities Commission's new 13-story headquarters beats the heart of one of the most energy-efficient office buildings in the world.
IT makes it tick.
The office tower, a smart building that opened in June, features many state-of-the-art green technologies, including solar panels and wind turbines that supply up to 7% of its energy needs. "Our goal was to save {rate payers} money and to educate them about energy efficiency," says program manager Masoud Vafaei.

发现该词在英国英语中指“纳税人”，而在美国英语中指“公用设施的用户”。
而这篇文章介绍的又明明是美国（旧金山）。但这里处理成“纳税人”感觉也不算错。如果处理成“公用设施的用户”，觉得过于冗长。纠结。