for the record, even if it's under your tenant's name, but you own the property

TNB will still make you pay for it

1. Otherwise, new tenant come in, register new account, then prev tenant get away scot-free. So TNB still wants someone to pay.

2. You can conclude, changing TNB account name to tenant's name is useless. It's a false of security and waste of time. And might be even worse. From TNB's own website;

"In the situation before a new tenant moves in, property owners could do a Change of Tenancy making the tenant fully responsible for any delinquent account. However, owners will lose the right to instruct a disconnection to TNB in the event the tenant defaults in his monthly electricity bills"

Source: https://www.tnb.com.my/faq/owner-tenant-issues/

3. TNB's SOP is screwed up. They will not disconnect supply even if your tenant doesn't pay for 1 year. You can cry "unfair", "lousy" all you want at the TNB counter.