The intervention is designed to use energy and water efficiently; high performance glazing on the Windows, the curtain wall and daylight decrease the need for electric lighting.

干预旨在有效地使用能源和水，高性能窗户上的玻璃幕墙和日光减少电力照明的需要。

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He says these already use energy more efficiently than other sectors because their energy costs are high - so there is a finite amount they can improve.

BBC: Savings needed to meet future demand for resources