3 sentences

1. 这款空调非常节能。

   zhè kuǎn kōng​tiáo fēi​cháng jié​néng.

   This air conditioner is very energy-efficient.

   Source: Dong Chinese Dictionary

2. 政策应当导向节能减排领域。

   zhèng​cè yīng​dāng dǎo​xiàng jié​néng jiǎn​pái lǐng​yù.

   Policies should be oriented towards energy conservation and emission reduction.

   Source: Dong Chinese Dictionary

3. 工厂正在试制一种节能环保的新型材料。

   gōng​chǎng zhèng​zài shì​zhì yī zhǒng jié​néng huán​bǎo de xīn​xíng cái​liào.

   The factory is trial-producing a new type of energy-saving and eco-friendly material.

   Source: Dong Chinese Dictionary