The nuclear plant generates several thousand megawatt-hours per year.
Tips
usage
兆 = mega- (million), 瓦特 = watt (a transliteration of James Watt's name). Often shortened to 兆瓦. For gigawatt use 吉瓦; for kilowatt use 千瓦.
memory
瓦特 is the 'Watt' of James Watt; the steam-engine pioneer's surname became the SI unit name and stayed that way in Chinese. Same pattern for 牛顿 (Newton), 焦耳 (Joule), and 赫兹 (Hertz).