Constellation vs Xoom Energy
Two national retail energy brands operating in Georgia, both owned outside the state. On filed rates this is the most lopsided pairing on the chart.
Xoom Energy has been the cheaper of the two in 88 of the 89 months since January 2019 when both filed a standard 12-month fixed plan.
This month, Xoom Energy is cheaper by $117 a year: $1,189.73 against $1,073.15, on the same annual-cost method as every plan on this site.
Side by side, October 2026
This comparison covers standard 12-month fixed plans filed with the PSC. For other terms, variable or senior plans, see the Constellation ratesand Xoom Energy rates pages.Verified advertised offers are shown separately and do not change this filed-rate ranking.
| Constellation | Xoom Energy | |
|---|---|---|
| Rate per therm | $0.8390 | $0.6590 |
| Service charge at sign-up | $5.95 | $5.85 |
| Estimated annual cost | $1,189.73 | $1,073.15 |
| Early termination fee | $150.00 | $100.00 |
| Based in Georgia | No | No |
| Owner | Constellation Energy | NRG Energy |
| PSC complaints, 24 months | 49 | 98 |
| Google rating | 4.9 (8,010 reviews) | 4.5 (820 reviews) |
The record since January 2019
| Marketer | Months cheaper | Share | Months filed since 2019 |
|---|---|---|---|
| Constellation | 1 | 1% | 89 |
| Xoom Energy | 88 | 99% | 89 |
- Xoom Energy has been the cheaper of the two for 46 consecutive months, up to October 2026.
- The widest the two have been apart was April 2022, when Xoom Energy was $388.38 a year cheaper.
- Both filed a standard 12-month fixed plan in 89 of the months we have published; Constellation filed in 89 months overall and Xoom Energy in 89.
Neither is necessarily the cheapest plan in Georgia: the full table ranks all of them, and how to read a head-to-head record explains what this page can and cannot tell you. The PSC comparison assumptions can change across years. Figures as filed with the Georgia PSC; the archive behind the record is history.csv. The Georgia Public Service Commission does not rank or endorse marketers.
Before you switch
All guides- Which plan type to choose
The six kinds of natural gas plan a Georgia marketer can sell you, what each one actually commits you to, and who each is genuinely for.
- How to switch marketer
What switching gas marketer in Georgia actually involves: the 19th-of-the-month deadline, what it costs to leave a contract early, and what does not change at your house.
- Pool groups and availability
Atlanta Gas Light's system is split into nine geographic pool groups, and marketers restrict some of their best plans to the Atlanta ones. Here is how to tell whether a rate is open to you.