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    Jupiter Power Starts Commercial Ops on 400-MWh Callisto Battery Storage in Texas

    Aug. 21, 2024
    The Callisto I energy center is a 200 MW/400 MWh battery energy storage system in central Houston, five miles from the Medical Center and 10 miles from the Houston Ship Channel at the site of a former HL&P H.O. Clarke fossil fuel power plant.
    Image credit Jupiter Power
    66c652df88db351bc33b12cb Jupiter Power

    Jupiter Power has achieved commercial operations of 400 MWh of dispatchable power to the Electric Reliability Council of Texas grid from its Callisto I battery energy storage facility.

    The Callisto I energy center is a 200 MW/400 MWh battery energy storage system in central Houston, five miles from the Medical Center and 10 miles from the Houston Ship Channel at the site of a former HL&P H.O. Clarke fossil fuel power plant. It can further accommodate an additional 400 MW/800 MWh of battery energy storage generation.

    Jupiter Power received a $65.2 million loan from First Citizens Bank last year to build the energy storage project in Houston. The developer itself is funded through a subsidiary of private equity investor Blackstone.

    The facility will increase Houston's supply of reliable, zero emissions power as it faces record demand increases. Callisto I demonstrates Jupiter Power's expansion of large-scale operational battery energy storage projects outside of West Texas and into Houston, to provide the city with clean, resilient and emissions-free power.

    "This critical project will help address peak power demand and is another great example of our region's leadership in scaling and deploying impactful solutions for an all the above energy future," said Jane Stricker, senior vice president of the Greater Houston Partnership and Houston Energy Transition Initiative (HETI) Executive Director.

    Earlier this month, ERCOT reported that installed battery storage capacity had surpassed 8 GW in the Texas grid system. New energy storage projects coming online could push that installed capacity to 15 GW by the end of 2025, according to reports.

    About the Author

    Rod Walton, EnergyTech Managing Editor | Senior Editor

    For EnergyTech editorial inquiries, please contact Managing Editor Rod Walton at [email protected].

    Rod Walton has spent 15 years covering the energy industry as a newspaper and trade journalist. He formerly was energy writer and business editor at the Tulsa World. Later, he spent six years covering the electricity power sector for Pennwell and Clarion Events. He joined Endeavor and EnergyTech in November 2021.

    Walton earned his Bachelors degree in journalism from the University of Oklahoma. His career stops include the Moore American, Bartlesville Examiner-Enterprise, Wagoner Tribune and Tulsa World. 

    EnergyTech is focused on the mission critical and large-scale energy users and their sustainability and resiliency goals. These include the commercial and industrial sectors, as well as the military, universities, data centers and microgrids. The C&I sectors together account for close to 30 percent of greenhouse gas emissions in the U.S.

    He was named Managing Editor for Microgrid Knowledge and EnergyTech starting July 1, 2023

    Many large-scale energy users such as Fortune 500 companies, and mission-critical users such as military bases, universities, healthcare facilities, public safety and data centers, shifting their energy priorities to reach net-zero carbon goals within the coming decades. These include plans for renewable energy power purchase agreements, but also on-site resiliency projects such as microgrids, combined heat and power, rooftop solar, energy storage, digitalization and building efficiency upgrades.

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