Antora Energy banks $550 million to mass-produce thermal batteries

KEY DEVELOPMENTS

• Antora Energy Raises $550M for Thermal Storage Scale-Up: The California-based startup closed one of the largest Series C rounds in storage history to deploy its carbon-block thermal battery systems at industrial facilities and data centers nationwide. Read More: Energy Storage News.
• Texas Regulators Set AI Data Center Co-Location Rules: The Public Utility Commission of Texas approved a data center co-located with a wind farm, requiring rapid load curtailment during grid emergencies — a first-of-its-kind framework that other states will study. Read More: Utility Dive.
• Origis Hits 500 MW at Rockhound Solar Complex: Origis Energy declared commercial operation across all three phases of its Rockhound solar installation in , adding a half-gigawatt of utility-scale capacity to the ERCOT grid. Read More: Texas, reNEWS.
• Holtec Clears NRC Hurdle for 1.36-GW New Jersey SMR Plant: Holtec International won NRC approval of the license termination plan at the retired Oyster Creek site in , setting up construction of four SMR-300 units totaling 1,360 MW by 2036. Read More: New Jersey, Power Magazine.
• Steel Shortage Threatens 43.4 GW of Planned Solar Builds: Domestic steel supply is falling short of the volume needed for mounting structures and trackers across the 43.4 GW of U.S. solar capacity additions planned for 2026, forcing developers to weigh compliance risk against project timelines. Read More: PV Magazine USA.

Solar & Storage

Origis Energy's 500-MW Rockhound complex in Texas is now fully online, a milestone that caps a multi-phase buildout and adds meaningful capacity to an ERCOT system perpetually hungry for new generation. The project's completion comes during a week that has already seen Panamint break ground on a 1.2-GW solar farm near Bremond and Tesla lock in a 509-MW solar-storage PPA in Arizona — three data points that together show utility-scale solar development in the Sun Belt is proceeding at industrial pace despite supply-chain headwinds.

Those headwinds are real. that the U.S. faces a structural steel bottleneck that could disrupt a substantial share of the 43.4 GW of solar capacity additions tracked for this year. Domestic mills cannot produce enough galvanized steel for racking and tracker systems at the pace developers need, and domestic-content bonus requirements under the Inflation Reduction Act's investment tax credit compound the squeeze. Developers now face a painful trade-off: source domestically and risk schedule delays, or look abroad and forfeit the bonus credit. For project finance teams underwriting 2027 and 2028 commercial operation dates, the steel question is becoming as consequential as panel pricing. Read More: PV Magazine USA reports.

Antora Energy's $550 million Series C, and , signals that investors see a different storage market emerging alongside lithium-ion. Antora's thermal battery technology — superheated carbon blocks that store and release energy as heat — targets industrial process heat and data center power, two demand sectors where electrification alone cannot close the gap. At $550 million, this is venture capital at infrastructure scale, and it suggests the thermal storage category has moved past science-project status. For developers already active in lithium-ion storage, Antora's trajectory is worth monitoring: the company's target customers overlap heavily with the hyperscalers driving behind-the-meter demand across the country. Read More: reported by Energy Storage News, CleanTechnica.

That data center demand is also driving unconventional grid infrastructure. Veolia was selected to powering an AI data center campus in New Albany. This briefing flagged the project on Wednesday; Veolia's selection as operator is the new detail. A 350-MW microgrid is an extraordinary piece of infrastructure — roughly the output of a small gas plant — and its location in central Ohio adds to a cluster of large energy investments near Columbus, including the state's controversial $100 million energy fund that excluded renewables from eligibility. For battery storage developers, the Ohio campus confirms that grid-scale BESS is now table stakes for large data center contracts, not an add-on. Read More: operate and maintain a 350-MW microgrid with 430 MWh of battery storage, Ohio.

On a smaller scale, the Wilkinsburg Community Development Corporation in Pittsburgh completed a 23.4-kW rooftop solar array through local installer EIS Solar, a by the nonprofit. It's modest wattage, but the project's use of a local contractor matters as workforce development becomes a political selling point for solar across both parties. Meanwhile, that Tenaska's proposed 500-MW Oystercatcher Energy Storage Project in Harford County drew sharp pushback from residents worried about fire risk and environmental damage near Deer Creek. The project is one of four battery installations under review for state credits. For storage developers working east of the Mississippi, the Harford County fight is a reminder that community opposition — already a fact of life in solar siting — is now a live risk for battery projects too. Read More: three-year effort, Pennsylvania, Maryland Matters reports, Maryland.

Wind Energy

Texas regulators broke new ground this week by , but with a significant catch: the facility must participate in demand response and execute rapid load reduction during grid emergencies. The ruling creates a precedent for how behind-the-meter loads at generation sites interact with the broader grid — a question that has been largely theoretical until now. For wind developers eyeing co-location deals with hyperscalers, the Texas framework establishes the regulatory floor. Expect other states with large wind portfolios and growing data center interest, particularly Iowa and Oklahoma, to watch how the curtailment mechanics perform in practice. Read More: approving an AI data center co-located with a wind farm.

No major new domestic wind project announcements landed today, but the co-location ruling's significance shouldn't be underestimated. It effectively creates a new asset class — wind-plus-load — that sits outside traditional utility interconnection. Whether that model scales depends on how ERCOT manages curtailment signals and whether other ISOs adopt similar frameworks.

Policy & Markets

Ten U.S. states have now legalized plug-in solar panel systems that bypass traditional permitting and electrician requirements. The trend follows Europe's balcony solar boom, particularly in Germany, and removes one of the biggest friction points for residential adoption: the cost and delay of professional installation. For the utility-scale industry, the movement is mostly tangential — these are 400- to 800-watt panels, not megawatt projects. But the regulatory precedent matters. States willing to deregulate small solar may signal broader permitting flexibility that benefits larger installations too. Read More: according to the New York Times.

On the nuclear front, Holtec's NRC approval of the license termination plan at Oyster Creek in Lacey Township, New Jersey, clears a critical bureaucratic barrier for the company's plan to build four SMR-300 units totaling 1.36 GW at the former reactor site. The 2036 target date is ambitious — no SMR design has yet reached commercial operation in the United States — but the project benefits from existing grid interconnection and transmission infrastructure at a site that already held a nuclear operating license. For clean energy investors, Oyster Creek is a bellwether: if Holtec can hold its timeline, it validates the brownfield-to-SMR model that several other developers are pursuing at retired coal and nuclear plants. Read More: Power Magazine reports.

In Massachusetts, the sale of energy efficiency firm NORESCO drew attention in Ipswich, where a local official the ownership change would not affect the town's existing efficiency contracts. The story is small but points to a broader dynamic: consolidation among energy services companies is accelerating, and municipal clients are increasingly asking whether their contracts survive a change of control. Read More: told residents.

LOOKING AHEAD

• Steel Supply Crunch Timeline: Developers with utility-scale solar projects targeting 2027 COD should be assessing domestic steel procurement now; PV Magazine's analysis suggests the bottleneck will tighten through Q4 2026 as 43.4 GW of planned additions compete for limited mill capacity.
• Maryland Battery Storage Credits: State regulators are reviewing four battery projects including Tenaska's 500-MW Oystercatcher proposal; decisions on state credit allocations could set the tone for storage siting battles across the mid-Atlantic.
• Texas Co-Location Framework Adoption: Watch whether MISO, PJM, or SPP pursue similar rules for behind-the-meter data center loads at generation sites following ERCOT's curtailment-conditioned approval this week.

THE BOTTOM LINE: Data center power demand is now the single most powerful force shaping U.S. clean energy development — driving $550 million storage investments, 350-MW microgrids, and new co-location rules — while a steel supply crunch threatens to slow the utility-scale solar buildout that must feed it all.