Adden Energy
Energy Efficiency · Energy Management
$37Mtotal raised · 4 rounds on record
4open roles
$16.9Mlatest round · Venture round · Sep 2026 · 1 mo ago
1backers · At One Ventures
Overview
Life after the combustion engine. Based on new science, the world's first dynamically-stable battery is here.
How Adden Energy hires
Truth index
B 75/100
Ghost roles
0%
Stale roles
100%
Reposted roles
0%
Adden Energy scores B on the Alion truth index (A is best, E worst), measured over 4 open roles re-checked against its own hiring board: 0% look like ghost listings, 100% have gone stale and 0% are the same role posted again. It measures how much of what this employer publishes turns into a real, finite search - not the employer as a workplace. How the index is computed
Funding and backers
Total raised
$37M
4 rounds on record
Latest round
$16.9M
Venture round · Sep 2026 · 1 mo ago
Team
51-200
employees, estimated range
Hiring now
4
open roles
Grants
$275k
1 grant · CORDIS
Backers
1
At One Ventures
The money's age
Fresh money
1 months since the last round · hiring slowed
Momentum
20/100
fresh money
Last sign of life
1 mo ago
a posting or a news item
The story so fareach stage dated by its source: the company's releases, the press, registers, filings
Oct 5
Board appointment Knudt Flor, Director · SEC Form D
Sep 18
Raised a round Venture round $16.9M · SEC Form D
Oct 23, 2024
Raised a round Venture round $15M
Apr 1, 2024
Won a grant $275k · CORDIS
Feb 14, 2022
Raised a round Venture round $5.1M · SEC Form D
2021
Founded
Tractionpublic signals, read monthly
Web presence
top 6%
of 133.2M domains by links, Common Crawl
Funding rounds
| Round | Date | Amount | Investors | Source |
|---|---|---|---|---|
| Venture round | Sep 2026 | $16.9M | — | SEC Form D |
| Venture round | Oct 2024 | $15M | — | axios.com |
| Grant | Apr 2024 | $275k | — | CORDIS |
| Venture round | Feb 2022 | $5.1M | — | SEC Form D |
Registers and programsofficial lists and records that name the company
| Legal entity | Adden Energy, Inc. | SEC Form D |
Founders and leadersfrom filings, registers and the company's site
Xin LiExecutive Officer, DirectorSEC Form D
William FitzhughExecutive Officer, DirectorSEC Form D
Luhan YeExecutive Officer, DirectorSEC Form D
Backed byfrom the funds' portfolios and accelerator catalogs
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Jobs
≈ $63k – $113k per year (Estimated) · Equity · In office · Full-Time · 2+ years exp · Bachelor's Degree · Waltham
SolidWorks
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≈ $65k – $180k per year (Estimated) · Equity · In office · Full-Time · Bachelor's Degree · Waltham
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≈ $99k – $180k per year (Estimated) · Equity · In office · Full-Time · 5+ years exp · Waltham
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≈ $65k – $180k per year (Estimated) · Equity · In office · Full-Time · Bachelor's Degree · Waltham
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Visa sponsorship
0
H-1B filings in 12 months
4
Open roles in United States
In the register as Adden Energy, Inc., Waltham, MA
Other sponsors in the same field
Bright Power 
Ameresco 
Energy Trust of Oregon
See 4 open roles Alert me
US Department of Labor · latest filing Jun 27, 2025 · Visa details by country
Growth
Hiring Momentum
48/100
Stable
Open positions
4
0 opened / 0 closed in 30 days
ATS activity
Every ~5 hours
Today
Hiring Dynamics
+100%
Hiring Focus
The percentage next to each role is its share of the company's job openings over the last 90 days; the arrow shows the shift versus the previous period.
Science & Research
50% ▼
Industrial Engineering
25% ▼
Energy
25% ▼
People
Xin Li
Executive Officer, Director
William Fitzhugh
Executive Officer, Director
Luhan Ye
Executive Officer, Director
Bernard Lupien
Director
Fred Hu
Director
Laurie Menoud
Director
Knudt Flor
Director
Jason Whaley
Director
Names and roles come from public filings, company registers and the company's own site. Is this you? Correct or remove · How we handle this data
Tech stack
Technologies named in job postings at Adden Energy over the last 12 months, by layer, with the share of postings for each.
Technologies in use
1
Postings analysed
1
Stack modernity
64/100
Developer tools
SolidWorks
Sign in to see how your skills match this stack
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Connections
List
Graph
Found in company registers, site code, DNS and hiring. Each connection shows how sure we are and the evidence, with its source and date.
Shared investors
At One VenturesVia a fund
Click a company to open it. Dashed lines are likely connections. The second step of the network is part of the Pro plan.
Owner
Same company
Same group
Likely
News
The Electric: Four New EV Battery Startups That Are Ignoring the Gloom Around Them
A bloodbath is happening in the electric vehicle battery industry: Most of the next-generation Western startups that gained favor in 2020 and 2021 are struggling to survive, and some have either filed for bankruptcy or shut down. But a new wave of battery
Read more
Report
Harvard develops a solid state battery that charges in minutes update
Researchers at Harvard University have developed a new solid-state battery that can be recharged in 10 minutes.
Read more
Report
Axios Pro: Solid state battery startup Adden Energy collects 15M
Independent.co.uk: Battery breakthrough that could slash the price of electric cars
Read more
Report
Battery breakthrough that could slash price of electric cars
The US is aiming for at least half of new vehicle sales to be electric by 2030
Read more
Report
Fast cycling of lithium metal in solid-state batteries by constriction-susceptible anode materials
Interface reaction between lithium (Li) and materials at the anode is not well understood in an all-solid environment. This paper unveils a new phenomenon of constriction susceptibility for materials at such an interface, the utilization of which helps fa
Read more
Report
Faster charging starts with EV batteries, not charge points
Adden Energy's Chief Executive explains why a change in battery composition could be the answer to unlocking faster EV charging times. By Will Girling
Read more
Report
A dynamic stability design strategy for lithium metal solid state batteries
A solid-state electrolyte is expected to suppress lithium (Li) dendrite penetration with high mechanical strength1-4. However, in practice it still remains challenging to realise a lithium metal anode for batteries, because micrometre- or submicrometre-si
Read more
Report
Offices
Where the company hires and what each office is for
Cities
2
Hiring now
1
Countries
1
Busiest office
Waltham
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Headquarters
Builds here
Office with open vacancies
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Belmont
United States
HQ
Waltham
United States
Regional office
1432 Main St. Suite 200, Waltham, MA 02451
4 open roles 50% engineering 50-200 est. staff
hires for Science & Research, Industrial Engineering, Energy
1432 Main St. Suite 200, Waltham, MA 02451