Green Mountain Energy vs Rhythm Energy.Which one actually costs you less?
The renewable original vs the digital-first challenger. We priced both plans against YOUR real kWh — the honest number, not the advertised teaser rate.
Voltcheckr LLC is a registered Texas electricity broker (PUCT Broker Registration BR260102), not a retail electric provider, and has no affiliated provider. We are paid a referral commission by the supplier you choose — never by you. You can stop using Voltcheckr at any time at no cost. By continuing you acknowledge our broker disclosures.
No bill? Estimate your savings instantly.
Moving, between bills, or prefer not to upload.
No file · No email · No catch.
Who wins?
Green Mountain invented the 100% renewable retail plan in 1997 and still sells it with a clear premium. Rhythm launched in 2020 with the same product but a digital-first app experience and usually a lower rate. If you want the name-brand green story, Green Mountain. If you want cheaper clean energy and to handle everything in a mobile app, Rhythm. At typical Houston / Dallas usage Rhythm is usually 0.5–1.5¢/kWh cheaper, which adds up to $80–150/year.
- •Fixed-rate 100% renewable
- •Pollution Free plans
- Environmentally-focused buyers
- Households willing to pay a green premium
- •Fixed-rate 100% renewable
- •Solar buyback (for solar-panel households)
- Digital-native customers
- Solar-panel households
- 100% renewable buyers
Stop guessing. See who wins at YOUR usage.
Upload your bill (or type your kWh) and we'll calculate which provider actually saves you more against your exact numbers — not an average that matches nobody.
Price both for my usage →Still researching?Grab the free guide.
We'll email you the free plain-English guide to Texas electricity shopping, how bill credit traps work, which plan types to avoid, and the 3 questions to ask before you sign. 5-minute read.
- How to read your current bill (and spot hidden fees)
- Why the advertised rate is almost never what you actually pay
- The exact questions to ask before you sign a 12-month plan
- When to lock in vs go month-to-month