Green Mountain Energy vs Rhythm Energy.Which is actually cheaper?
The renewable original vs the digital-first challenger. Voltcheckr calculates the real effective rate of every plan at your actual usage — not just the advertised rate.
Moving in? No bill needed — just your ZIP and home size.
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
See who wins at YOUR usage.
Upload your bill (or type your kWh) and Voltcheckr calculates which provider actually saves you more based on your exact numbers — not an average.
Rank both against 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