Energy Storage
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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 -
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 -
Explore the Trendline➔
Melissa Sue Gerrits via Getty Images
TrendlineEnergy 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 -
The week in 5 numbers: The electricity price report everyone is talking about
Plus utility identity fraud, turbine backlogs and more.
By Meris Lutz • Oct. 24, 2025 -
$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More than $24 billion in clean energy investment has been withdrawn so far this year, according to E2.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 Diana DiGangi • Oct. 23, 2025 -
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 -
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 Ethan Howland • Oct. 23, 2025 -
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 -
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 Diana DiGangi • Oct. 21, 2025 -
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 Robert Walton • Oct. 21, 2025 -
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 -
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 -
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 Meris Lutz • Oct. 17, 2025 -
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 Robert Walton • Oct. 16, 2025 -
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 Ethan Howland • Oct. 16, 2025 -
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 Ethan Howland • Oct. 15, 2025 -
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 -
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 -
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 -
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 Robert Walton • Oct. 10, 2025 -
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 Diana DiGangi • Oct. 9, 2025 -
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 Herman K. Trabish • Oct. 9, 2025 -
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 -
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 -
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 Meris Lutz • Oct. 3, 2025 -
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 Meris Lutz • Oct. 1, 2025