The AEE (Autoridad de Energia Electrica) procedure for returning your electricity deposit is not designed for people who leave the island.
After you inform AEE- in person, in their office, not online - though you can pay a bill online, thanks heavens: in PR a lot of stupid errands has to be done by foot, or wheel, not by phone or email, which would be a lot easier - that you no longer want to have electricity in your place, because you are moving away, they tell you to await a letter from them in about a week's time.
Ok, the letter arrived two weeks - not one week - later, but, surprise, surprise, there is no check in it. Just a statement that you have a credit with AEE and that you have to go visit their office - in person - again, to collect your money, I am hoping.
But what if you need to have electricity up to the day you move away from the island???
They apparently do not want you to move away - at least not with your money!