It's Friday. The most valuable thing a battery does this year may be to never send an electron back to the grid. Heat the carbon, sell the steam, let the ethanol plant next door run while everyone else waits in the queue.
In today's edition:
🔥 Big Story: Antora lands $550M to store cheap power as heat
⚡ Quick Hits: a self-powered line sensor, 1.1 GW of gas engines, Slovakia's biggest battery
💰 Capital: fusion's next billion, nuclear's $4.5B year
📋 Policy Watch: New Jersey's VPP plan, geothermal permitting, a cancelled line
📊 Chart of the Day: home batteries outgrow the grid-scale fleet
The Big Story
Antora raises $550M to scale heat batteries for data centers and factories
San Jose-based Antora Energy closed a $550 million Series C on Thursday to expand US production of its thermal batteries, Canary Media reported. The eight-year-old company stores electricity as heat in solid carbon blocks, then releases it as industrial steam or on-demand power. It plans a second domestic factory to serve what it calls a pipeline of signed agreements with data center operators and industrial firms, customers it declined to name.
"From factories to data centers, energy is the bottleneck to industrial growth."
G2 Venture Partners and Eclipse co-led the round, bringing Antora's total corporate and project financing to roughly $1 billion, according to the company.
Its first commercial-size project, a 5 GWh battery of 200-plus modules at Poet's biofuels plant in Big Stone City, South Dakota, began booting up two months ago and will rank among the world's largest, the company says.
Antora designed a tariff with Otter Tail Power that pays it to charge on surplus renewable output, and COO Justin Briggs told Canary Media that planned data center projects could run five to 10 times the South Dakota scale.
Source: Canary Media
Quick Hits
Technology milestones from across the grid
Five stories from across the stack, starting with a sensor that powers itself off the line it watches.
University of Texas researchers built a self-powered transmission line sensor that pinpoints faults and flags developing problems early, cutting inspection time on energized lines. T&D World
Innio took a 1.1 GW reciprocating gas engine order from a US data center developer, a sign of how fast behind-the-meter generation is scaling as an interconnection workaround. Data Center Dynamics
Alcemi entered Romania with a 2.3 GWh battery pipeline the same week Slovakia's largest BESS came online on a retired brown-coal site. Energy-Storage.news
Oak Ridge National Laboratory deployed a 146.7 kWh Viridi battery at its GRID-C field site, moving grid-control and AC/DC architecture research from indoor emulation to live-grid validation. pv magazine USA
ISO-NE picked a $2.2 billion Avangrid and Eversource project to relieve Maine transmission constraints, its first Longer-term Transmission Planning award. RTO Insider
The Capital Stack
Commonwealth Fusion raises another $1B to finish SPARC
Commonwealth Fusion Systems raised a further $1 billion to finish its SPARC tokamak and advance ARC, the 400 MW plant that already holds a 200 MW Google power purchase agreement and a live PJM interconnection request, Canary Media reported. That takes CFS to roughly $4 billion raised, more than any other fusion company, and puts a pre-commercial technology in a capacity market queue.
Source: Canary Media
Also in the capital stack:
Nuclear startups have pulled in more than $4.5 billion across 81 companies so far in 2026, with recent criticality milestones at Antares, Valar Atomics and Aalo pulling fresh rounds behind them. Axios
Policy Watch
New Jersey's Board of Public Utilities floated a roughly $68 million statewide virtual power plant program aggregating home batteries, thermostats and EV chargers to shave about 3% of peak demand by mid-2027, making utility-run DER aggregation a default rather than a pilot. ROI-NJ
The Senate Energy and Natural Resources Committee cleared the Geothermal Energy Advancement Act by voice vote, creating an Interior permitting task force and expediting NEPA reviews, the constraint geothermal developers cite most on drilling schedules. E&E News
The Department of Energy cancelled a bipartisan-backed transmission project its backers projected would save ratepayers $200 million, reportedly because it sits in California, making federal cost-share a political variable in developer models. Latitude Media
Chart of the Day
Australian home batteries pass grid-scale on power capacity
Home battery power capacity on Australia's main grid hit 7.8 GW at the end of June, up from about 1.4 GW before the federal rebate, past 7.7 GW of grid-scale, according to Modo Energy. Modo expects that fleet to double again to 15.8 GW by 2030, compressing evening price spreads alongside utility-scale batteries.
Source: RenewEconomy, chart by Modo Energy · July 30, 2026
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