Google-Backed Texas Battery Storage Pilot Shows BESS Can Improve Hourly Carbon-Free Matching for Data Centers

Google has released the results of a three-month battery storage pilot project in Texas that demonstrates how grid-connected batteries can store surplus renewable energy and discharge it during hours when fossil-fuel generation is higher, potentially creating a new environmental revenue stream for battery asset owners while helping data center operators improve their hourly carbon-free energy matching.

The pilot, undertaken by Quintrace, esVolta, and LevelTen Energy, used hourly time-stamped Granular Certificates to allocate solar energy to grid-connected batteries and shift it to hours when Google's energy consumption exceeded its renewable supply. According to the companies, the batteries charged and discharged a total of 9.2GWh during the respective windows over the course of the pilot. The partners said the process incentivizes battery dispatch to improve carbon-free energy matching, offering a new commercial pathway for battery storage developers and a tracking mechanism that accurately accounts for and retires the hourly certificates behind it.

As part of the pilot, Google contracted with the battery operators to time-shift environmental attributes it already owned, without tolling the batteries or assuming any merchant or dispatch risk. According to the companies, this structure left operators in full control of their assets, allowing them to respond to energy price signals and grid emergencies. esVolta contributed its Anole project (240MW/480MWh), located in Seagoville, Texas, and its Burksol project (100MW/200MWh), located in Dickens County, Texas, to the pilot. Quintrace provided the software platform used to implement the verification, while LevelTen managed the registry accounts to prevent double-counting and provided the transaction framework for the storage-shift agreements.

"Batteries are set to play an important role in how companies shape their sustainable energy strategies, not only in how the grid is balanced. This pilot shows storage can be reliably dispatched and credited to match clean energy to demand on a granular hourly basis, and that will shape those strategies and attract further investment into storage," said Devin Hardman, chief commercial officer at esVolta.

"One of the most exciting parts of this pilot was introducing a new price signal and contracting structure to the utility-scale storage market. When delivered at scale, this can support the financing and construction of more batteries and provide operators an incentive to dispatch for the environmental outcomes their customers are asking for, not just the ones that energy markets pay for today," added Jason Tundermann, chief innovation officer at LevelTen Energy.

The pilot's results carry significant implications for the data center industry, which has come under increasing pressure to demonstrate verifiable progress toward carbon-free energy goals as AI-driven demand for computing capacity surges. By proving that battery storage can be reliably dispatched and credited on an hourly basis to match clean energy with demand, the project offers a potential template for hyperscalers and colocation operators seeking to tighten the gap between their renewable procurement and actual consumption. Google has backed several battery storage projects in recent years, most recently making its first foray into the long-duration energy storage sector through a partnership with CO2 battery manufacturer Energy Dome on a 23MW project in Rhode, Ireland.