Never had a deposit with PSE&G, but if you do it is based on the historical consumption rate of the property. If they do require a deposit, many times it can be waived if you can supply a letter of credit from a previous utility company. For instance, when I moved to my current home I went from PSE&G to South Jersey Gas and Atlantic Electric. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.