Home owners are being encouraged to insulate their homes to save energy.

当局鼓励房主给住房加隔热装置以节约能源。

To save energy, we should do everything we could to save electricity from now on.

为了节省能源，我们从现在开始就要尽可能地省电。

This doesn't just save energy.

这不只是节省能源。

The devices also save energy.

该设备也十分节能。

Don't you want to save energy, Sir?

难道你不想为节能做点贡献吗，先生？