Phone Scam Alert! If you receive a call from individual(s) who say they are with Sierra Electric and you are past due or they threaten to disconnect your electric service if you do not pay, DO NOT pay any money to these individuals or give them your account or personal information. Hang up and call our office at 575-744-5231. We can tell you if you are delinquent in your payments. While Sierra Electric does make courtesy calls to our customers, we don't ask our customers for account numbers or any other identifying information, we don't require specific methods of payment, like prepaid gift cards or money cards and we call from our office in Elephant Butte, so our phone number will appear on caller ID.