ME BESS ERCOT May 2026: BESS revenues in March hold 23% below the 12-month average
ME BESS ERCOT May 2026: BESS revenues in March hold 23% below the 12-month average
ERCOT batteries earned an average of $1.88/kW-month in March 2026. That is 23% below the trailing 12-month average BESS revenue of $2.43/kW, even after rebounding from February's $1.16/kW-month. Real-Time Energy was the largest year-over-year drag at -$0.27/kW, and Ancillary Services gave up a combined $0.52/kW
What did ERCOT batteries earn as May spreads collapsed?
Modo Energy's Benchmarks measure realised BESS revenue in ERCOT and attribute it by service and strategy, from energy arbitrage to ancillary services.
Explore the ERCOT benchmark →April’s late-month price spikes did not return in May 2026. Real-Time prices topped out at just $219/MWh on May 26. As a result, monthly Real-Time TB1 spreads fell 60% to $40/MWh, the lowest in at least 13 months. Day-Ahead TB1 dropped 40% to $41/MWh. Calm weather met a still-growing fleet, and scarcity disappeared.
Have any questions or feedback? Contact the author at alejandro@modoenergy.com.
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