Many ways to reduce electricity bill

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Want to save the cost of electricity? Want some good tips? On the internet, the list is limitless (7, 12, 13, 65, 101 ways) -

7 Ways

12 Ways

13 Ways

65 Ways

101 Ways

But realistically the following 2 should be easy to do:-

1. Turn off the lights & other electrical appliances when it is not in use

2. Instead of air-conditioner, use normal fan

What else?