http://www.globalonline.equifax.com/biz/debt_recovery_pdfs/EFS-429-ADV%20AdvEnergy.pdf

https://www.creditforecast.com/v3/marketing.asp

The above links may shed a tille info into what they are looking at, assuming that's the score they used. It's more than just credit. Looks like they could be taking demographics, income, prior utility payment history, and others into account.