Senior Counsel - Energy Transactions

'A really hard problem': Gridmatic CCO on the challenges of BESS revenue forecasting, the role of AI and load co-location. September 16, 2026 Energy-Storage.news Premium speaks with David Miller, CCO of optimiser Gridmatic, at the 2026 US Battery Asset Management Summit in Garden Grove, California. Over the past three years, the revenue mix for battery energy storage systems (BESS) in the US has changed, David Miller says, nowhere more so than in the Electric Reliability Council of Texas (ERCOT) and California Independent System Operator (CAISO) markets. It's no coincidence that ERCOT and CAISO are the country's two biggest markets for BESS. "I would say three years ago, the revenue streams across markets in the US, were dominated by ancillary services for batteries, and that has changed pretty significantly both in ERCOT and CAISO, where the energy revenues are the largest, primarily because there's been enough batteries to provide the ancillary service need, so the prices of ancillary service have saturated from that participation," he says. Miller continues, "In ERCOT, you could make pretty good revenue just bidding the same product every hour, every day, and you could even bid it at just zero price and say, 'I'll just take whatever the market clears.' That wasn't the ideal strategy, but it wasn't bad. Whereas if you did that today, you'd be one of the worst battery operators in the market." 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Dignissimos quo molestiae cumque. Sequi illo non saepe facere aut aliquid consequuntur sunt. Amet non illo dolor molestiae nulla eligendi quae. Id aut et velit quos sit ratione earum rerum. 3 November 2026 Málaga, Spain Understanding technology and supplier selection for Europe's utility-scale PV market in 2027. PV ModuleTech Europe 2026 is a two-day conference that tackles these challenges directly, with an agenda that addresses all aspects of PV module, inverter and battery supplier selection; product availability, technology offerings, supply chain traceability, quality assurance, factory auditing, system reliability, and supplier bankability.

Gridmatic, an AI-powered energy company, has partnered with OBM to launch a daily settlement and automated load control solution for large flexible loads, including Bitcoin mining operations. The collaboration combines OBM's Real-Time Settlements platform with Gridmatic's AI-driven energy forecasting. The solution replaces traditional monthly invoices with daily settlements, reducing collateral requirements from 45–60 days and lowering working capital needs. OBM's automated load control system manages operations based on real-time energy prices, curtailing activity during high-cost periods to protect customers from price spikes. The partnership aims to transform high-load operations into dynamic grid resources whilst reducing risk for both power suppliers and customers. Gridmatic is the most profitable participant in ERCOT's wholesale market and operates the top-performing battery asset in CAISO.