low-energy bulb 慳電膽

low-energy bulb
繁：慳電膽
简：悭电胆

慳電膽未必最慳電，理工大學的學者及學生研發出一種新型「LED燈絲燈」，發光率最高達129瓦特，不但是傳統LED燈的約1.5倍，更是慳電膽的約2倍，以每度電1.14港元計算，使用新型燈的一年電費及碳排放，均只是慳電膽的約4成。

理大研發新型LED燈　電費為慳電膽的四成（2017年3月8日）。on.cc東網，取自 http://hk.on.cc/hk/bkn/cnt/news/20170308/bkn-20170308123340016-0308_00822_001.html

 “Companies look to save pennies by changing to low-energy light bulbs, but the money spent making their workers more comfortable or putting a spring in their step can have a major financial benefit in terms of reduced recruitment costs.”

Allen, D. (2015, April 18). How green rooftops and vertical gardens are transforming London. South China Morning Post. Retrieved from http://www.scmp.com/magazines/post-magazine/article/1768582/how-green-rooftops-and-vertical-gardens-are-transforming