Index: buying at market price
Every kWh is bought at the ERCOT market price. Nothing is locked in, so when the market is low, your cost is low too. When prices rise, your cost moves with them. It works best for businesses with room in the budget and a plan for peak hours.
How it works
Who it fits
- Buyers who can ride out a heat wave or a freeze
- Sites that can cut load fast when prices jump
- Short-term or bridge needs
The trade-off
Often the lowest cost over time, with more movement when the grid is tight. Best for budgets with room to flex.
Common questions
Can I protect myself on index?
Yes. Pairing index with peak alerts and the ability to shift load is how large users manage it. Many later move to Block & Index or Percent Fixed.
What happens in an event like Winter Storm Uri?
Index customers pay what the market pays. That's why we only recommend it to sites that understand and can handle that risk.
Not sure which one fits?
Send us a recent bill or let us pull your usage, and we'll do a free load analysis. We'll price the options side by side and tell you which fits, in plain English.
Talk to Strategic Client ServicesOther ways to buy: Fixed · Block & Index · Percent Fixed