Overview

• The ACP-Aurora study shows deploying 11GW of battery storage across MISO by 2035 could lower system costs by $27 billion and trim average wholesale price growth by $1.40 per megawatt-hour.
• MISO currently operates about 125 MW of batteries and expects nearly 1 GW online by spring 2026, with roughly 60 GW of standalone storage in its interconnection queue.
• The report urges updates to electricity market rules, accelerated interconnection procedures and streamlined permitting to enable a 500% increase in battery capacity.
• Federal production and investment tax credits for storage remain intact under the recent tax and spending legislation despite the phase-out of wind and solar credits.
• Case studies in ERCOT and CAISO demonstrate that batteries can avert load sheds and provide critical ancillary services, bolstering grid reliability.