TSMC to double energy efficiency and clean water consumption for semiconductor wafer manufacturing

According to TSMC 2021 Sustainability Report, they aim to by 2030, amongst many goals & actions:

• double energy efficiency after five years of mass production for each process technology
• reduce unit water consumption (liter/12-inch equivalent wafer mask layers) by 30% (Base year: 2010)

Link to report: e-all.pdf (tsmc.com)