Stockholm-based battery-materials startup Holyvolt raised $45 million in an all-equity round from Zone II.
Why it matters: Holyvolt's $45M round and DRX cathode bet show how one startup is pairing a high-throughput lab with AI models to chase battery chemistries outside China's grip.
Rabot Energy raised $50 million in a Series B led by Endeit with DeepTech & Climate Fonds.
Same story, shown in Top Deals《Rabot Energy raises $50M Series B led by Endeit Capital for virtual power plant》
Siemens led a nine-digit investment that lifted Estonia's Skeleton Technologies above a $1 billion valuation.
Same story, shown in Top Deals《Skeleton Technologies raises Siemens-led nine-figure round, valuation tops $1B for US AI data-centre push》
Hamburg-based Rabot Energy raised $50 million in Series B funding led by Endeit Capital.
Why it matters: Rabot's Series B shows how home batteries are being aggregated into grid-scale virtual power plants, and where smart-meter shortages still constrain the model.
Helsinki-based Ambio raised a €5.1M seed round led by b2venture, with Montis and Lifeline Ventures.
Helion Energy appeared as an $800 Jeopardy! clue in a Y Combinator category, with the answer "What is fusion?
Skeleton Technologies announced a Siemens-led nine-digit investment that lifts its valuation above $1 billion.
Why it matters: Skeleton's Siemens-led round shows how AI data-centre power demand is pulling industrial capital into energy hardware rather than chips alone.
OlsAro raised €5M in seed funding led by Industrifonden, with Nordic Foodtech VC as co-lead.
Why it matters: OlsAro's €5M seed shows how AI trait discovery is being sold to seed companies rather than run as a standalone farm operation.
Helsinki-based Ambio raised a €5.1 million seed round led by b2venture.
Why it matters: Ambio's seed round shows how AI matchmaking is being applied to the demand side of recycled plastics, where weak buyer interest has stalled the market.
Giraffe Bio raised a $6.4 million seed round led by Orion Industrial Ventures, with BHP Ventures.
Why it matters: Giraffe Bio's engineered biomolecules could lift copper recovery by up to 5% at existing mines, a rare concrete bet on biotech easing a looming supply gap.
Licube has licensed technology from Japan's Hirosaki University to purify lithium-6.
Hamburg-based 1KOMMA5° raised €70M from existing and new investors at a $1.35B valuation.
Why it matters: The round shows how a hardware-led energy installer is pitching its Heartbeat AI software to public-market investors, with a US entry and IPO both tied to 2027 results.
Cambridge-based Neela Biotech has raised £2.1m in pre-seed funding, led by Elbow Beach with £1.5m.
Beyond Reach Labs raised a $10M seed round led by Interlagos, with Y Combinator.
Why it matters: The interview details how a Brooklyn startup plans to mass-produce deployable solar arrays for orbital data centers, a niche supply bet on the growing satellite power market.
European VC firm 2150 raised a €210 million second fund from 34 limited partners.
Why it matters: The fund's city-first thesis and its stated interest in data centers and industrial automation show where climate-focused capital is moving as AI power demand grows.
Redwood Materials raised a $350 million Series E led by Eclipse, with a new strategic investment from Nvidia's venture arm NVentures. A source put the valuation at about $6 billion.
Why it matters: Redwood's $350M round and Nvidia's participation show how retired EV batteries are being repurposed to supply power for AI data centers.
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