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The EnergyTech Stack

The complete tracker for energy technology companies — nuclear fusion, battery storage, grid technology, and the clean energy transition.

25
Companies Tracked
$20B
Total Funding Raised
6
Pre-IPO Companies
1
S-1 Filed
🏆
Top EnergyTech Companies
Ranked by valuation — 25 companies tracked
1
Northvolt private

European battery manufacturer producing sustainable lithium-ion batteries for electric vehicles and energy storage.

Valuation: $12B Raised: $9B Series D+
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2
Redwood Materials Pre-IPO

EV battery recycling company recovering lithium, cobalt, and nickel to build closed-loop battery supply chains.

Valuation: $3.7B Raised: $1.35B Series D+
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3
X-Energy Pre-IPO

X-Energy is a nuclear energy company developing small modular reactors (SMRs) and TRISO-X fuel. Amazon-backed and DOE-funded, filed S-1 with SEC on March 20 2026 targeting $1B raise on Nasdaq under ticker XE. Partners include Talen Energy, Dow Chemical, and Centrica.

Valuation: $3.5B Raised: $1B+ Pre-IPO
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4
Form Energy Pre-IPO

Energy storage company developing low-cost iron-air batteries for multi-day grid energy storage.

Valuation: $1.8B (est.) Raised: $1.2B Series F
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5
Sila Nanotechnologies Pre-IPO

Battery materials company replacing graphite anodes with silicon for higher-energy EV batteries.

Valuation: $3.3B Raised: $930M Series D+
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6
Climeworks private

Swiss direct air capture company removing CO2 directly from the atmosphere using modular DAC units.

Valuation: $2B Raised: $785M Series D+
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7
Commonwealth Fusion Systems Pre-IPO

Fusion energy company developing high-field superconducting magnets to achieve commercial fusion power.

Valuation: $2B+ Raised: $1.8B Series B
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8
Watershed Pre-IPO

Enterprise carbon management platform helping companies measure, reduce, and report their emissions.

Valuation: $1.8B Raised: $270M Series C
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9
Arcadia private

Clean energy platform helping millions of Americans access community solar and renewable energy.

Valuation: $1.5B Raised: $125M Series C
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10
QuantumScape public

Solid-state lithium-metal battery company developing next-generation EV batteries.

Valuation: $1.5B Raised: $1.5B Public
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11
EnergyVault public

Long-duration energy storage company using gravity-based systems to store and discharge renewable energy.

Valuation: $1.2B Raised: $388M Public
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12
Carbon Engineering private

Pioneer in direct air capture technology, acquired by Occidental Petroleum to scale carbon removal at industrial levels.

Valuation: $1.1B Raised: $163M Acquired
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13
Electric Hydrogen private

Green hydrogen electrolyzer company making clean hydrogen production cost-competitive with fossil fuels.

Valuation: $1B Raised: $380M Series B
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14
Ascend Elements private

Battery materials company recycling lithium-ion batteries into high-performance cathode materials.

Valuation: $1B Raised: $542M Series C
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15
Turntide Technologies private

Smart motor technology company replacing legacy electric motors with AI-powered efficient motors.

Valuation: $1B Raised: $255M Series C
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16
Twelve private

CO2 transformation company converting captured carbon dioxide into fuels, chemicals, and materials.

Valuation: $800M Raised: $216M Series B
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17
Solid Power public

Solid-state battery developer producing next-generation batteries for electric vehicles with higher energy density and safety.

Valuation: $600M Raised: $530M Public
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18
Moxion Power private

Mobile battery energy storage company replacing diesel generators with clean, quiet electric power.

Valuation: $500M Raised: $130M Series B
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19
Verdagy private

Next-generation water electrolysis company producing green hydrogen at industrial scale.

Valuation: $400M Raised: $100M Series C
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20
Koloma private

Geological hydrogen company discovering and producing naturally occurring hydrogen from the earth.

Valuation: $350M Raised: $91M Series A
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📋
IPO Watchlist
Expected to IPO in next 12-24 months
Redwood Materials 24-36 months
EV battery recycling company recovering lithium, cobalt, and nickel to build closed-loop battery supply chains.
$3.7B IPO Readiness
59
Form Energy 24-36 months
Energy storage company developing low-cost iron-air batteries for multi-day grid energy storage.
$1.8B (est.) IPO Readiness
59
Commonwealth Fusion Systems 24-36 months
Fusion energy company developing high-field superconducting magnets to achieve commercial fusion power.
$2B+ IPO Readiness
59
X-Energy S-1 Filed — Imminent
X-Energy is a nuclear energy company developing small modular reactors (SMRs) and TRISO-X fuel. Amazon-backed and DOE-funded, filed S-1 with SEC on March 20 2026 targeting $1B raise on Nasdaq under ticker XE. Partners include Talen Energy, Dow Chemical, and Centrica.
$3.5B IPO Readiness
56
Watershed 24-36 months
Enterprise carbon management platform helping companies measure, reduce, and report their emissions.
$1.8B IPO Readiness
52
Sila Nanotechnologies 24-36 months
Battery materials company replacing graphite anodes with silicon for higher-energy EV batteries.
$3.3B IPO Readiness
49
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Sector Pipeline
Company count by funding stage
Series A
5
Series B
5
Series C
5
Series F
1
Pre-IPO
1
Series D+
4
Public
3
Acquired
1
💰
Recent Funding Rounds
Latest deals in the EnergyTech sector
Cambium Carbon
Series A · Feb 2025
$18.5M
Led by VoLo Earth Ventures
Climeworks
Series D · Feb 2024
$650M
Led by Balderton Capital
Cambium Carbon
Seed Extension · Dec 2023
$5.3M
Led by MaC Venture Capital
Watershed
Series C · Dec 2023
$100M
Led by Kleiner Perkins, Lightspeed
Electric Hydrogen
Series B · Nov 2023
$198M
Led by Breakthrough Energy Ventures, Amazon
Verdagy
Series C · Sep 2023
$50M
Led by Breakthrough Energy Ventures, Mitsubishi Heavy Industries
Carbon Engineering
Acquisition · Aug 2023
$1.1B
Led by Occidental Petroleum
Moxion Power
Series B · Aug 2023
$100M
Led by Andreessen Horowitz, Generate Capital
Northvolt
Debt/Equity · May 2023
$5B
Led by Goldman Sachs
Form Energy
Series D · Apr 2023
$450M
Led by Breakthrough Energy Ventures, GIC Singapore
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Sector Themes
Key narratives driving the EnergyTech sector in 2026
1

AI data center power demand creating once-in-generation energy investment cycle

2

Nuclear fusion reaching commercial ignition threshold in 2025-2026

3

Long-duration battery storage unlocking 24/7 renewable baseload

4

Small modular reactors (SMRs) receiving regulatory approval

5

Grid modernization becoming national security infrastructure priority

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