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Energy

Climate tech, batteries, grid, fusion

Decarbonising the global economy — renewables, energy storage, grid software, hydrogen, fusion, carbon capture. The most capital-intensive sector and the fastest-growing in 2025–26. · A public taster of the full Dealroom platform — request a demo for live deal flow, founder pedigrees, AI-talent maps, and per-company financials.

1.1 Overview

$920B+44%
Combined startup EV
7,600
Tracked startups
145
Thoroughbreds ($100M rev+)
1.9% of startups
110
Unicorns ($1B+)
1.4% of startups
11
Decacorns ($10B+)
10% of unicorns

1.2 🔥 Hottest sub-segments

What's heating up inside Energy

Top 12 of 39 Energy sub-sectors ranked by Dealroom's curated signal score (combines funding velocity, unicorn formation, recency).

#1
Nuclear Fission
+281% VC growth8 unicorns · $38B EV
#2
Energy
+162% VC growth176 unicorns · $4.7T EV
#3
Nuclear Fusion
+486% VC growth4 unicorns · $31.3B EV
#4
Affordable and Clean Energy (#7)
+242% VC growth144 unicorns · $3T EV
#5
Energy Management System
+91% VC growth5 unicorns · $29.1B EV
#6
Hydrogen
+1717% VC growth14 unicorns · $122B EV
#7
Geothermal Energy
+309% VC growth1 unicorn · $10B EV
#8
Wind Energy
+312% VC growth3 unicorns · $105B EV
#9
Alternative Battery Chemistry
+147% VC growth3 unicorns · $29.6B EV
#10
Energy » Clean Energy
+238% VC growth71 unicorns · $2.3T EV
#11
Solar Energy
+317% VC growth31 unicorns · $413B EV
#12
Climate Tech
+130% VC growth282 unicorns · $4.1T EV

Heat ranking from venture-sector-lens — Dealroom's curated 0–100 sector signal combining funding velocity, unicorn formation, and emergence.

3.1 Rounds & valuations

Largest Energy rounds & most valuable companies

A live treemap of $100M+ rounds — or switch the view to size companies by their latest valuation (EV). Filter by HQ region; drag the year slider to add earlier rounds.

Largest Energy rounds - Global 2026

Every $100M+ VC round classified as Energy in 2026, grouped by company HQ location.
- rounds · - raised
Location
Live from Dealroom API Open full VC dashboard

3.2 VC investment

When the capital landed in Energy

VC investment into Energy companies over the last decade, broken down by round size, company location, sector and funding stage. Counts VC rounds into companies tagged or classified to Energy. Live from the Dealroom Next Gen API.

4.1 Geographic concentration

Where Energy startups concentrate

Cities and countries ranked by Energy unicorns headquartered there, plus countries that over-index the global average (5× = 5× more represented than globally).

5.1 Sector comparison

How Energy stacks up

Compare Energy with the other simplified sectors — switch between combined EV, 5-year EV growth, and a growth × size view. Expand the table for every sector.

Combined enterprise value of each sector.

5.3 Market sentiment

What the market is saying about Energy

An AI-synthesized read of the highest-engagement posts about Energy on X over the past 7 days. We rank by likes & retweets, ignore corporate channels, and surface the themes that broke out from real people.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

Get the full Energy sector on Dealroom

Live deal flow, founder pedigree, hiring signals and revenue trajectories — for every Energy startup.