Platts launches California, Texas hourly battery storage energy-only revenue indices

Platts, part of S&P Global Commodity Insights, launched its new battery revenue indices for the California Independent System Operator(CAISO) and Electric Reliability Council of Texas (ERCOT), effective July 10.

The project was first proposed here: https://www.spglobal.com/commodityinsights/en/our-methodology/subscriber-notes/051024-platts-proposes-california-texas-hourly-battery-revenue-indices.

These indexes provide transparency about the value of average battery output energy-only revenues in their respective regions, as battery storage capacity is increasingly growing with CAISO and ERCOT leading the way in installations in 2024, according to a report by S&P Global Commodity Insights.

With the indexes, Platts tracks revenues and costs in system operators throughout the day for hours 1-24 using battery storage charge and discharge output and hourly ISO prices.

Additionally, Platts calculates final net revenues for the day and publishes a spread between positive values versus negative values.

Positive values represent profits gained from discharging batteries which could be participating in energy-only services into the grid, and negative values represent losses or costs associated with charging energy from the grid.

Final net revenues represent the difference between profits and costs.

The indices are published in Megawatt Daily, Energy Trader, Platts Connect and Alert Pages.

Please address any questions or comments to powerpricing@spglobal.com and pricegroup@spglobal.com.

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