The premium is usually 0.3¢/kWh
We pulled every 100% renewable plan in the Texas market as of March 2026 and matched each one against a grey-power plan from the same provider with the same term length. The median premium was 0.31¢/kWh — about $3.70/month on a 1,000 kWh home.
In 28% of cases, the 100% green plan was actually cheaper than the grey equivalent. This usually happens when a provider is pushing new renewable capacity and wants to move signups.
Why Texas green is legit-ish
Texas is the largest wind producer in the country and the second-largest solar producer. Unlike some markets where “green” plans rely heavily on unbundled RECs from other states, many Texas renewable plans source from in-state wind and solar farms.
- Green Mountain Energy sources the majority of its load from Texas wind.
- Rhythm Energy publishes its generation mix quarterly.
- Reliant and TXU offer green-labeled plans that rely more on RECs than direct sourcing.
How to pick a legitimate green plan
- Read the EFL. It discloses the actual generation mix plus the REC source.
- Prefer plans that source ≥80% from in-state renewables.
- Check the premium math at your real usage — it might surprise you.
The climate math is real. The economic math is closer than you think.