節電（せつでん、setsuden）
- electricity saving

The Japanese word 節電, read せつでん, means "energy conservation" or "saving electricity." It refers to the act of reducing the amount of electricity used, typically to save money, protect the environment, or address energy shortages. It's about being mindful of electricity consumption and taking steps to minimize it. The term encompasses a range of actions, from turning off lights to using energy-efficient appliances. The core idea is to use less power.

⚫︎ 節電のために、電気を消しました。 Translation: I turned off the lights to save electricity. ⚫︎ 夏の暑い日は、節電が必要です。 Translation: Energy conservation is necessary on hot summer days. ⚫︎ 政府は国民に節電を呼びかけました。 Translation: The government called on citizens to conserve electricity.

You can use 節電 in various contexts related to energy saving. It's common in conversations about environmental awareness, saving money, or coping with energy crises. You'll hear it in news reports, daily conversations, and discussions about household energy consumption. It can also be used as a verb: 節電する, which means "to do energy conservation" or "to save electricity."

節電 is written in kanji and hiragana. The kanji 節 (せつ) means "节" "節" (section, season,节约) , and 電 (でん) means "electricity." The pronunciation is せつでん in hiragana. There's only one standard way to write this word. The okurigana is fixed.

⚫︎ 省エネ (しょうエネ): Energy saving. (Shorter for 省エネルギー) ⚫︎ 省エネルギー (しょうエネルギー): Energy saving. (More formal) ⚫︎ 節約 (せつやく): Saving, thrift (can be used for resources in general, not just electricity)

There aren't direct antonyms, but words and phrases related to increased energy consumption would be opposite in concept: ⚫︎ 電力消費 (でんりょくしょうひ): Power consumption. ⚫︎ エネルギー浪費 (エネルギーろうひ): Energy waste.

会社では、節電のために、照明を減らしています。》 ・Translation: The company is reducing lighting to save electricity. ・Explanation: This sentence describes an action taken by a company to conserve energy by reducing the use of lights.

暑い夏には、エアコンの使用を控え、節電を心がけましょう。》 ・Translation: Let's refrain from using air conditioning and be mindful of saving electricity during the hot summer. ・Explanation: This sentence provides advice on how to save electricity (節電) in the summer by using air conditioning less.

The word 節電 is a compound word formed by combining the kanji 節 (せつ), which has the meaning of "节" "節" (saving, economizing), and 電 (でん), which means "electricity." The combination creates the meaning of "saving electricity" or "energy conservation." The word originated with the modern concept of managing and conserving energy resources.