I rent condo in Bangkok and pay electricity bills at the 7-11. I will be out of country for about 3 months and have been advised not to turn off service while I'm gone.
In fact, you have several options:
- Contact your landlord and ask them to pay the bills while you're absent. You probably meet them anyway because you'll be paying the rent in advance, correct?
- Find PEA office location in your area and negotiate this with them (more instructions here). I believe you are not the first one who temporarily leaves the country, and PEA knows how to handle this;
- Just delegate this to your friend or neighbor you trust to. A friend who visits your place once a week is also a good security measure, too.