By 2020, the public sector will use 15 per cent less electricity and 5 per cent less water compared to 2013 levels.

This is according to the Public Sector Sustainability Plan 2017-2020 announced by Deputy Prime Minister Teo Chee Hean earlier this week.

Public officers will achieve this by adopting greener practices such as having a higher temperature setting for the thermostats for air-conditioned premises, and buying more green office products.

The public sector will only hold its events and functions in venues with at least a Green Mark Certified rating.

We think the public service and offices in Singapore can consider one more energy-saving practice from Japan.

Japanese workers are encouraged to dress casually in hot months to help limit the use of air conditioning for energy saving. This is part of the “Cool Biz” campaign which was introduced in 2005 by the government to save electricity.

The campaign was so successful that it became an annual initiative and has spin off the Warm Biz campaign in 2016 which encourage citizens to keep warm while using lesser electricity.

The Japanese are also encouraged to eat root vegetables and eat more warm food such as hotpot to warm their bodies.

We think the “Cool Biz” campaign should totally be implemented for our offices here in Singapore too.

Everyday should be Casual Friday at work. And no more walking back to office after lunch in a drenched shirt.

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Back to the Public Sector Sustainability Plan 2017-2020, DPM Teo said that meeting the targets for saving water and electricity could result in cost savings of about $62.5 million a year.

So, does that mean we can pay lesser income tax please?