Published 
Nov 4, 2025

ERCOT's Real-Time Co-Optimization + Batteries (RTC+B): How Texas facilities can earn more while powering grid stability

On December 5, 2025, ERCOT will launch Real-Time Co-Optimization + Batteries (RTC + B), its most significant market redesign since 2010. This initiative will integrate energy and ancillary services in real time, rewarding customers who can respond quickly to changing grid conditions. 

Catherine Stack
Catherine Stack
Sales Director

The challenge

Texas is growing fast. ERCOT forecasts demand will rise by 43 GW by 2030. The rapid expansion of AI, electrification, and digital infrastructure is pushing the grid to its limits, driving price fluctuation and reliability concerns. 

A solution: Real-Time Co-Optimization + Batteries (RTC+B)

On December 5, 2025, ERCOT will launch Real-Time Co-Optimization + Batteries (RTC + B), its most significant market redesign since 2010. This initiative will integrate energy and ancillary services in real time, rewarding customers who can respond quickly to changing grid conditions. 

Before: Ancillary services were scheduled a day in advance. If your facility’s load changed unexpectedly, you faced penalties and missed opportunities.

After RTC+B: ERCOT will co-optimize energy and ancillary services every few seconds, unlocking over $1 billion in annual efficiency gains and enhancing participation for flexible loads and batteries by removing risk of steep penalties. 

Voltus has experience optimizing participation in other markets that co-optimize ancillary services and energy, which means our team is ready to deliver optimal performance and revenue for your facility in ERCOT.

Why it matters for your facility

Under RTC+B, your facility can:

  • Earn new revenue by participating in both day-ahead and real-time energy markets
  • Reduce risk - no more penalties for less predictable load variations
  • Support grid reliability by helping balance intermittent renewable generation

The bottom line

The future of ERCOT is flexible and fast. Voltus has the technology to optimize your participation and turn your facility into a reliable revenue-producing grid asset.

Ready to learn how? Contact info@voltus.co or reach out directly to cstack@voltus.co.