Hi,
For someone who curious where I live on or need more information regarding Malaysia Electicity Charges, you can refer below for Government Subsidy and the appliances as your home usage!

http://www.tnb.com.my/residential/discounts-rebates-and-offers.html

http://www.tnb.com.my/residential/energy-savings-at-home/usage-cost-of-electrical-appliances-at-home.html

These above are the standard residential rates! It is not under commercial rates and yet to deducted with hardware energy savers and some extra work out!

I have experience with commercial usage to deduct almost 200% of electrical cost in a shop from almost MYR 900 usage to nearly MYR300++ usage per month! So it is depends on how you work it out only when you want to fully attached to a business! Especially nothing is impossible in Malaysia, whether you have a heart to work it out or not!

Just for your reference!

Cheers