# Ambri: Semiconductors, Marlborough, United States

> Ambri: Ambri is an American startup focused on long-duration grid-scale energy storage using its proprietary Liquid MetalTM battery technology.

Source: https://millionrounds.com/startup/ambri (Millionrounds; every figure on the page links to its filing or article)

United States · [Semiconductors startup](https://millionrounds.com/companies)

# Ambri

Ambri is an American startup focused on long-duration grid-scale energy storage using its proprietary Liquid MetalTM battery technology.

Funding reported Last round: Undisclosed round

Semiconductors Marlborough, United States

Company summary

- **Founded:** 2010 16 years old
- **Team:** 55 51 to 200 people
- **Funding reported:** $219M in dollars
- **Last round:** Undisclosed round Aug 2024

How sure we are

- ✓ **Listed** We know it exists and what it does
- 2 **Funding reported** A company dataset reports a raise
- 3 **Observed** A filing or a dated announcement confirms a round

No round for Ambri has been confirmed by a filing or an announcement yet, so nothing here counts toward an investor's record. [How we decide](https://millionrounds.com/methodology)

## About Ambri

Ambri is an American startup focused on long-duration grid-scale energy storage using its proprietary Liquid MetalTM battery technology.

Founded in 2010 by Donald Sadoway and David Bradwell from MIT, Ambri aims to enhance the operation of power grids by increasing the use of renewable energy sources like wind and solar, while reducing reliance on traditional fossil fuel power plants. The Liquid MetalTM battery is designed for a lifespan of over 20 years and can handle frequent daily cycling, even in harsh environments. It is safe, durable, and cost-effective, providing 4 to 24 hours of energy storage capacity. Ambri offers a ready-to-install DC containerized system that integrates the battery with necessary infrastructure, making it easier for utility providers, industrial customers, and renewable energy projects to incorporate intermittent energy sources into the grid. The company has raised over $50 million in funding from notable investors, including Bill Gates and Total.

## What company datasets say Ambri raised

Funding, as reported

Reported in all **$219M** in dollars

Rounds **8**

Last round **Undisclosed round**

Last round size **$7.4M**

Last round date **Aug 2024**

Investors listed **12**

SEC Form D **$18M sold, 2 filings, last Jan 2025**

## On a portfolio page

Investors who name them

- [Japan Energy Fund](https://millionrounds.com/fund/japan-energy-fund)

Each firm lists Ambri on its own website. That is the firm's claim, a weaker thing than a round we watched, but a named source.

## The company, in detail

What they build

Known for

degradation-free batteries hardware harsh environment operation renewable power support grid services massive energy capacity disaster-resilient batteries clean energy & technology energy project deployment cost-efficient manufacturing energy transition grid operation thermal self-heating systems innovative battery design lower opex ancillary services

Built with from their website

Yoast SEO Google Maps Contact Form 7 Google Tag Manager Priority Hints CAPTCHA Google Font API LiteSpeed Slider Revolution WordPress.org

+8 more

Microsoft Exchange Atlassian Microsoft 365 FlexSlider Proofpoint Font Awesome MySQL wpBakery

- **Sector:** Semiconductors
- **Industry code:** NAICS 33591, SIC 3621
- **Region:** Massachusetts
- **Revenue:** $8.0M a year, as listed
- **Full record:** [Every detail in the company directory](https://millionrounds.com/directory/ambri)

## Semiconductors in United States

Startups like it

- [**d-Matrix** Santa Clara · founded 2019 *Raised*](https://millionrounds.com/company/d-matrix)
- [**Celestial AI** Santa Clara · founded 2020 *Raised*](https://millionrounds.com/company/celestial-ai)
- [**Teradar** Boston · founded 2021 *Raised*](https://millionrounds.com/company/teradar)
- [**Terabase Energy** Berkeley · founded 2019 *Raised*](https://millionrounds.com/company/terabase-energy)
- [**Celero Communications** Irvine · founded 2024 *Raised*](https://millionrounds.com/company/celero-communications)
- [**Delos Data** Palo Alto *Raised*](https://millionrounds.com/company/delos-data)
- [**Amogy** New York · founded 2020 *Raised*](https://millionrounds.com/company/amogy)
- [**Ethernovia** San Jose · founded 2018 *Raised*](https://millionrounds.com/company/ethernovia)

## Is this your company?

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