SPP South, where most batteries exist today, provided assets the potential to earn $9.7/kW-month in July 2026, or roughly $117/kW-year annualized. That is 2% below June's $10.0/kW-month.

The highest revenue potential, however, continues to sit at the West Hub. Potential revenue in SPP West reached $21.2/kW-month - 1.6x the North Hub and more than double the South.

Read on to learn how Energy and Ancillary Service pricing - and emergency conditions in the West - set the benchmark in July. To compare this to last month, read the June 2026 SPP benchmark report.

If you have any questions about our SPP research, please reach out to ovais@modoenergy.com.

Day-ahead TB4 spreads rose in the North, while Real-Time prices spiked in the West

Day-ahead TB4 spreads reached $9.8/kW-month at the North Hub and $5.5/kW-month at the South Hub in July. These present a 72% increase and 8% decrease year-over-year, respectively.

SPP West's real-time TB4 reached $24.7/kW-month, the widest of the three hubs.