FundedIQ

Recently Funded Series D Energy Startups

Updated Aug 2026

FundedIQ tracks 26 funded Series D Energy startups, with their funding rounds, amounts, investors, industries, locations and company details. This page provides an overview of the Series D Energy startup funding landscape, along with the 26 most recently funded Series D Energy startups.

Series D Energy startups closed 9 funding rounds over the last 24 months, 6 of them in the last 12 months, and raised $2.4B in disclosed capital. The median disclosed round is $102M, with the middle half of rounds falling between $79M and $300M. Austin and Bangalore hold the deepest concentrations of these companies.

Late stage energy firms in Austin and Bangalore typically maintain midsize workforces. Coatue leads the backing for these entities. This scale indicates a shift toward operational maturity. These companies act as established corporate targets rather than early prototypes. They possess the infrastructure to support large contracts and integrated deployments across various global regions.

Series D Energy funded startup statistics

Funded Series D Energy startups
26
tracked in the database
Funding rounds, last 12 months
6
9 over 24 months
Disclosed capital raised, 24 months
$2.4B
9 of 9 rounds disclosed an amount
Median round size
$102M
middle half $79M to $300M

Most recent funding round on record: Aug 2026. Investors appearing most often across Energy funding rounds: Coatue.

26 most recently funded Series D Energy startups

26 shown

Ordered by the date of the latest funding round. Each row gives the company, its location and industry, what it does, the stage and date of that round, and the disclosed amount.

B
Austin, United States · Energy
Base Power is a contemporary energy company that focuses on backup battery systems for homes and electricity…
Series D ·
$1.0B
T
Seattle, United States · Energy
Teichos Energy specializes in renewable energy solutions including the development of solar, wind and…
Series D ·
$2.4M
U
Houston, United States · Energy
Utility Global is the develops of eXERO™, a gas production technology, aimed at achieving an affordable,…
Series D ·
$100M
L
Mountain View, United States · Energy
Lunar Energy's mission is to transition homes to 100% clean energy. Founded in 2020, Lunar Energy is…
Series D ·
$102M
R
El Segundo, United States · Energy
Radiant is a clean energy startup building a nuclear microreactor. A climate-friendly alternative to diesel…
Series D ·
$300M
X
Rockville, United States · Energy
X-energy is delivering the next generation of carbon-free energy by reinventing nuclear power. X-energy…
Series D ·
$700M
R
Nunawading, Australia · Energy
RayGen is an Australian technology company specializing in advanced solar power and energy storage solutions.…
Series D ·
$79M
C
Falls Church, United States · Energy
ConnectDER creates sleek and uncomplicated solutions to tackle challenging problems in the fields of…
Series D ·
$35M
Z
Everett, United States · Energy
Zap Energy's fusion technology uses sheared flows instead of magnetic fields to stabilize plasma. By passing…
Series D ·
$130M
R
Oxford, United Kingdom · Energy
Reactive Technologies we are committed to enabling a more intelligent use of energy, for the largest and most…
Series D ·
$32M
A
Westborough, United States · Energy
Ascend Elements utilizes advanced processes to extract valuable elements from used lithium-ion batteries for…
Series D ·
$162M
H
Hydrexia
Brisbane, Australia · Energy
Hydrexia, an Australian organization, has achieved the effective creation, construction, and trial of…
Series D ·
Undisclosed
U
Bangalore, India · Energy
Ultraviolette Automotive is a technology startup working on electric two-wheelers and energy infrastructure.…
Series D ·
$24M
S
Tempe, United States · Energy
Source is a designer and producer of sun based fueled gadgets intended to separate drinkable water from the…
Series D ·
$130M
O
San Francisco, United States · Energy
OhmConnect is a product based powerplant that helps clients in coordinating the manner they utilize their…
Series D ·
$55M
B
San Mateo, United States · Energy
Booster is energy delivered, integrated logistics, and society’s solution for decarbonizing last-mile…
Series D ·
$125M
F
San Leandro, United States · Energy
FreeWire Technologies provides smart battery systems for EV charging and mobile distributed power. It…
Series D ·
$125M
S
Chicago, United States · Energy
Greenlight sells, installs and finances solar home systems for the 1.8 billion off-grid and under-electrified…
Series D ·
$260M
S
Dresden, Germany · Energy
Sunfire develops and manufactures systems for renewable industrial gas and fuel production. These substitutes…
Series D ·
$95M
S
Tallinn, Estonia · Energy
Skeleton Technologies is a manufacturer and developer of high energy and power density ultracapacitors based…
Series D ·
$42M
F
Woburn, United States · Energy
Factorial Energy ("Factorial") has pioneered a new solid-state electrolyte material battery technology, FEST™…
Series D ·
$200M
E
Planegg, Germany · Energy
Electrochaea is commercializing a disruptive, scalable technology to convert electric power into methane, the…
Series D ·
$41M
S
Herzliya, Israel · Energy
The extreme-fast charging battery pioneers StoreDot is a battery developer and materials innovation leader,…
Series D ·
$60M
A
Washington, United States · Energy
Arcadia is a nationwide home energy platform providing clean energy and savings. Arcadia Power is remaking…
Series D ·
$100M
F
Somerville, United States · Energy
Form Energy develops and commercializes a low-cost battery system that can store wind and solar energy for a…
Series D ·
$240M
S
Burnaby, Canada · Energy
Svante offers companies in emissions-intensive industries a commercially viable way to capture large-scale…
Series D ·
$75M

Countries with the most funded Series D Energy startups

Where funded Series D Energy startups are headquartered, by the country on the company record.

Where are funded Series D Energy startups located?

Where funded Series D Energy startups are based, by the city on the company record.

About the FundedIQ Series D Energy startup funding data

FundedIQ tracks announced startup funding rounds and organises them by company, funding date, stage, amount, industry, location and investor. The dataset is refreshed weekly, and new rounds are normalised and de-duplicated before they are published, so the same round reported twice on different dates is recorded once.

Figures on this page cover the 26 funded Series D Energy startups currently tracked. Round counts, capital totals and the median round are computed over a trailing 24 months. Rounds whose amount was not disclosed (0 of 9 in that period) are counted as rounds but excluded from capital totals and from the median. The most recent round on record for funded Series D Energy startups is dated Aug 2026.

The table above shows the 26 most recently funded companies. Full funding histories, investor lists and founder contacts across the whole dataset open on a FundedIQ plan.

Frequently asked questions

How many funded Series D Energy startups are there?

FundedIQ tracks 26 funded Series D Energy startups. This page lists the 26 most recently funded of them, ordered by the date of their latest round, and the full set is available on a FundedIQ plan.

How much funding have Series D Energy startups raised?

Series D Energy startups tracked by FundedIQ have raised $2.4B in disclosed capital across 9 funding rounds over the last 24 months, including 6 rounds in the last 12 months. 9 of those 9 rounds disclosed an amount; undisclosed rounds are excluded from the capital total.

Which countries have the most funded Series D Energy startups?

United States leads with 17 companies, ahead of Australia (2), Germany (2) and Canada (1).

Which cities have the most funded Series D Energy startups?

Austin leads with 1 companies, then Bangalore (1), Brisbane (1) and Burnaby (1).

What is a typical funding round size for Series D Energy startups?

The median disclosed round over the last 24 months is $102M, and the middle half of rounds fall between $79M and $300M. Round sizes vary widely by stage, so the seed and later-stage bands sit well either side of that figure.

How often is the Series D Energy startup funding data updated?

The dataset is refreshed weekly. New rounds are normalised and de-duplicated before they are published, and the most recent round currently on record for funded Series D Energy startups is dated Aug 2026. Counts and totals on this page are recomputed on every refresh.

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