Energy Storage

  • A large energy storage unit
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    Courtesy of Peak Energy
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    Are sodium-ion batteries finally ready to compete with lithium?

    Proponents say sodium-ion batteries degrade more slowly, operate more efficiently and have lower fire risk. But high-profile failures cloud the U.S. market while China moves aggressively to develop the technology. 

    By Brian Martucci • Oct. 28, 2025
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    tiero via Getty Images
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    Sponsored by Bloom Energy

    Why fuel cells are redefining on site power for data centers

    Power access is the defining constraint of data centers, particularly those supporting AI workloads.

    Oct. 27, 2025
  • A battery storage system. Explore the Trendline➔
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    Melissa Sue Gerrits via Getty Images
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    Trendline

    Energy Storage

    The proliferation of energy storage in everything from utility-scale batteries to electric vehicles is a driving force in the transition to a cleaner, more distributed power system. This trendline includes the best Utility Dive reporting on this dynamic sector.

    By Utility Dive staff
  • A Mitsubishi Power M501JAC combustion turbine is delivered to Georgia Power's Plant Yates.
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    Courtesy of Georgia Power/Mitsubishi Power
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    The week in 5 numbers: The electricity price report everyone is talking about

    Plus utility identity fraud, turbine backlogs and more.

    By • Oct. 24, 2025
  • General Motors CEO Mary Barra speaks at the General Motors Factory ZERO electric vehicle assembly plant
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    Nic Antaya via Getty Images
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    $1.6B in clean energy investments were rolled back in September: E2

    More than $24 billion in clean energy investment has been withdrawn so far this year, according to E2. The group said $11 billion in new projects were announced over the same period.

    By • Oct. 23, 2025
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    Courtesy of Entergy
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    Opinion

    Gas reliance will worsen the energy affordability crisis

    Utilities and regulators should consider other options before investing in gas plants and making customers pay the inflated price, writes Cassady Craighill, technical education director at GridLab.

    By Cassady Craighill • Oct. 23, 2025
  • An aerial view of eight large battery storage containers in a fenced-in lot.
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    Courtesy of Lightshift Energy
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    PJM poised to add more storage following surplus interconnection reform

    The grid operator’s new fast-track interconnection review is dominated by gas but also includes about 2.3 GW of storage projects that could be online much sooner.

    By • Oct. 23, 2025
  • NineDot Energy workers watch as a crane lowers a battery unit.
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    Courtesy of NineDot Energy
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    US energy storage market looks resilient amid global growth: BNEF

    Despite new foreign sourcing restrictions, reduced policy and trade uncertainty has brightened the outlook for U.S. storage players, the energy research firm said Monday.

    By Brian Martucci • Oct. 21, 2025
  • Aerial view of the Silver Peak Lithium Mine, showcasing a vast desert landscape with a network of rectangular evaporation ponds in varying shades of blue and green. These geometric pools are interlaced with earthen pathways and surrounded by arid terrain, illustrating the industrial scale of lithium extraction in a remote environment.
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    Alamy
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    DOE cancels $700 million in battery and manufacturing project grants

    A DOE spokesperson said the projects had missed milestones and would not provide a positive return on investment of taxpayer dollars.

    By • Oct. 21, 2025
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    Getty Images
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    ISO New England launches cluster study of 26 battery, wind and solar projects

    The projects have a combined summer rated capacity of about 8 GW. The transitional cluster study is the first under a new review framework and is expected to be completed in August 2026.

    By • Oct. 21, 2025
  • Plumes of steam rise from data center buildings.
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    Courtesy of Google
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    Portland General Electric invests in AI-powered flexibility to speed data center connection

    The utility is working with startup GridCARE to help data centers plug into transmission-constrained grids without waiting for new infrastructure, executives said.

    By Brian Martucci • Oct. 20, 2025
  • Workers in neon gear at a storage facility
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    Permission granted by Wärtsilä Energy Storage
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    Sponsored by Wärtsilä Energy Storage

    The race to pack more megawatt-hours into fewer boxes is a density trap

    High energy density doesn't always equal lower costs. Discover what really drives value in energy storage.

    By Ruchira Shah, General Manager, Software Product Management and Neha Sinha, Senior Product Manager, Hardware Product Management, Wärtsilä Energy Storage • Oct. 20, 2025
  • Transmission towers are shown near solar panels
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    Ethan Miller via Getty Images
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    The week in 5 numbers: DOE backs transmission, Amazon’s dozen nuclear reactors

    Plus a group of solar projects in Nevada face uncertainty and California funds offshore wind.

    By • Oct. 17, 2025
  • A Fluence Energy Gridstack battery storage system.
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    Courtesy of Fluence
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    Torch Clean Energy taps Fluence for 640 MWh battery at Arizona solar plant

    Torch’s “Winchester” project will have 160 MW of solar and is expected to be online in 2027 to support regional grid balancing and forecast load growth, the company said.

    By • Oct. 16, 2025
  • A man speaks with a woman with the U.S. Capitol building in the background.
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    Kevin Dietsch via Getty Images
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    21 Democratic House members press PJM for interconnection reforms

    The lawmakers called on the PJM Interconnection to bolster rules for energy storage and grid-enhancing technologies while considering options such as “connect and manage.”

    By • Oct. 16, 2025
  • An aerial view of residential homes, many with solar panels.
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    Mario Tama via Getty Images
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    VPP Convergence Project aims to educate states on virtual power plants

    Tesla, Sunrun, Leap, Voltus and the National Association of Regulatory Utility Commissioners are involved in the effort.

    By • Oct. 15, 2025
  • A large-scale solar and battery Storage facility
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    Courtesy of Dominion Energy
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    PJM Interconnection needs 43 GW of energy storage by 2045: Brattle Group

    A report commissioned by the U.S. Energy Storage Coalition said North America’s largest grid operator needs to rapidly build storage to ensure reliability and mitigate cost increases amid a surge in electricity demand.

    By Brian Martucci • Oct. 14, 2025
  • Two engineers look at a data center server rack.
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    Getty Images
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    Honeywell to supply new power solutions for data centers

    Working with industrial automation firm LS Electric, Honeywell will offer AI-driven power management solutions, including battery energy storage systems, to help meet the sector’s energy demand.

    By Joe Burns • Oct. 10, 2025
  • Two large outdoor HVAC units are installed on a concrete platform outside a building. Each unit has a visible circular fan and a rectangular vented casing. The building’s exterior includes gray walls, windows with closed blinds, and a strip of weathered wood paneling. Some grass and concrete blocks are in the foreground.
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    Alamy
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    Opinion

    Why data center operators should pay for residential electrification upgrades

    Upgrading households is the fastest way for hyperscalers to obtain all the electricity they need, writes Ari Matusiak, founder and CEO of Rewiring America.

    By Ari Matusiak • Oct. 10, 2025
  • SRP placed into service a 25-MW battery storage facility called the Bolster Substation Battery System.
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    Courtesy of Salt River Project
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    Salt River Project taps ESS for 50-MWh iron flow battery

    ESS’ stock price doubled in early Friday trading. The pilot project is expected to be online by the end of 2027.

    By • Oct. 10, 2025
  • Dominion Energy headquarters
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    Zach Gibson / Stringer via Getty Images
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    Dominion issues RFP seeking solar, wind and storage PPAs

    Dominion Energy spokesman Aaron Ruby said the company is seeking the power purchase agreements as part of its “‘all of the above’ strategy to serve growing power demand.”

    By • Oct. 9, 2025
  • U.S. Energy Secretary Chris Wright speaks during a television interview outside of the White House
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    Anna Moneymaker via Getty Images
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    Deep Dive

    Grid planners and experts on why markets keep choosing renewables

    “If natural gas was the cheapest option to meet the peak, the markets would select it,” said Sean Kelly, co-founder and CEO of forecast provider Amperon and a former energy analyst.

    By • Oct. 9, 2025
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    Courtesy of PG&E Corp.
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    Hydrogen and batteries power ‘first-of-its-kind’ California microgrid

    Interest in hydrogen fuel cells has grown as data centers and other large-load customers seek alternatives to diesel generators, said Frank Wolak, president and CEO of the Fuel Cell and Hydrogen Energy Association.

    By Emma Penrod • Oct. 7, 2025
  • An EPC substation.
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    Permission granted by Bryan Fairbanks
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    Sponsored by Burns & McDonnell

    Value engineering delivers key benefits on EPC substation projects

    Discover how value engineering delivers cost savings, quality gains, speed and safety on substation projects.

    Oct. 6, 2025
  • U.S. Secretary of Energy Chris Wright speaks at the Conservative Political Action Conference
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    Andrew Harnik via Getty Images
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    The week in 5 numbers: DOE slashes clean energy funding following coal ‘investment’

    Plus PJM’s data center woes, record storage deployment and new generation additions.

    By • Oct. 3, 2025
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    Justin Sullivan via Getty Images
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    Utility conferences to watch in 2026

    See our annual list of notable power-sector conferences where industry leaders will share knowledge in a rapidly-changing landscape. 

    By • Oct. 1, 2025