How fast would it take to for you guys to take over my Electricity if I want to change over to Tuas Power?

It will take approximately 2 weeks, if there is no discrepancies in the information provided for the transfer.
Customer signing up can selected the earlies available date for transfer when signing up. It will help Tuas Power inform SP on the transfer notice and for SP to notify customers on the transfer application. Assuming if there's no discrepancy between the data registered with SP and the customer submitting the information, the transfer should be done swee swee (nicely) on the preferred day. However if there are discrepancy, Tuas Power will have to seek customer's assistance to provide the right information for the transfer. In such a situation, the transfer date might be delayed. ​​​

I switched my grandparents recently to Tuas Power and it took about 3 weeks from them. You can see the earliest possible start date when filling out the application online.