When I tried to enroll I noticed there was a option to pick Budget Billing.
Most suppliers offer budget billing, which allows you to pay a fixed amount each month and spread out your costs predictably across the year. Budget billing averages bills out over 12 months, so each monthly bill will be the same amount until the total bill is paid. The company may adjust the bill four times a year, up or down, depending on the customer's use. Residential customers may contact their electric utility and/or supplier and request budget billing at any time.