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Energy storage startups Form Energy and Antora raise $1.3B for long-duration batteries

By PulseAugur Editorial · [1 sources] ·

Form Energy and Antora, two companies developing long-duration energy storage solutions, have recently secured significant funding to scale their production. Form Energy, which utilizes iron-based batteries, raised $750 million, while its competitor Antora, focused on thermal batteries made from carbon, raised $550 million. Both companies aim to provide cost-effective energy storage using abundant materials, addressing the intermittency of renewable energy sources like solar and wind, and meeting the growing demand from data centers. AI

IMPACT Accelerates the deployment of grid-scale energy storage, crucial for integrating intermittent renewables and powering energy-intensive AI workloads.

RANK_REASON Significant funding rounds for two key players in the long-duration energy storage sector. [lever_c_demoted from significant: ic=1 ai=0.7]

Read on Forbes — Innovation →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

Energy storage startups Form Energy and Antora raise $1.3B for long-duration batteries

How we ranked this

Signal score
0 / 100
Composite score across the factors below. Higher = stronger signal that this story matters right now.
Newsworthiness bucket
Research
Significant funding rounds for two key players in the long-duration energy storage sector. [lever_c_demoted from significant: ic=1 ai=0.7]
Source corroboration
Single-source cluster
Only one publisher covered this so far. Single-source stories can still rank when the publisher is high-authority, but they lack cross-source corroboration.
Topics
funding, infra
Editorial topic classification. Feeds into how the story surfaces on /topic/<slug> hub pages and into the per-entity coverage mix.
AI-industry relevance
High
Clearly on-topic for AI-industry coverage.
Story freshness
45 days old
Aged out of breaking-news scoring windows; ranking reflects the durable signal from the full source set.

Full methodology in our editorial standards.

COVERAGE [1]

  1. Forbes — Innovation TIER_1 English(EN) · Alan Ohnsman, Forbes Staff ·

    Iron Vs Carbon: Funds Surge For Makers Of Batteries That Store Power For Days

    Form Energy raised $750 million to boost output of iron-based batteries that hold power for over 100 hours, on the heels of Antora raising $550 million for thermal batteries made from carbon

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