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Brimstone Energy

Energy · Oakland, United States · Founded 2019

Hardware cleantech startup that aims to reduce CO2 emissions through innovative technologies MoreLess

Brimstone Energy, a cleantech company founded in 2019, is working to decarbonize the cement industry. The company has developed a technology to produce Ordinary Portland cement, a key component in concrete, without releasing CO2. This process is not only cleaner but also more cost-effective than traditional cement production methods.

The company's approach involves using calcium silicate rocks instead of limestone as the raw material for cement production. This method avoids the CO2 emissions that are typically generated when limestone is heated. As a byproduct of this process, Brimstone Energy also produces supplementary cementitious materials (SCMs), which can further reduce the carbon footprint of concrete.

Brimstone Energy is headquartered in West Oakland, California, and is in the process of scaling up its production. The company's solution has the potential to significantly reduce the environmental impact of the construction industry, which is a major contributor to global carbon emissions.

Keywords: cement, decarbonization, cleantech, construction, carbon-negative, industrial, materials, sustainability, greentech, manufacturing

Company overview

Brimstone Energy company information

The essential company record, classifications and operating signals in one place.

Status
Operational
Founded
2019
Headquarters
Oakland, United States
Employees
71
Open positions
None listed
Dealroom signal
64.6
sub industryConstructionbusiness modelManufacturingindustryReal EstatesectorSpinoutsectorSustainable Development GoalssectorUrban TechsectorCarbon Capture and StoragesectorAdvanced MaterialssectorSustainable CementsectorClimate TechsectorGreen BuildingssectorCircular EconomysectorCarbon UtilisationsectorCarbon Removal

Valuation & funding

Brimstone Energy funding history

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
GRANTOther financing Mar 2024 $189M US Department of Energy
SERIES AOther financing Mar 2022 $55M $220M Collaborative Fund · DCVC · Fifth Wall Ventures · Breakthrough Energy Ventures
GRANTOther financing Nov 2021 $2M US National Science Foundation · ARPA-E
SEEDOther financing Nov 2021 $5.1M $20M DCVC · Breakthrough Energy Ventures
SUPPORT PROGRAMOther financing Aug 2019 $0 The Strauch Cleantech to Market Program
SPINOUTOther financing Jan 2019 Stanford University
Showing 6 recorded eventsUnlock the complete deal history →

Growth signals

Brimstone Energy website traffic

Latest recorded traffic for Brimstone Energy is 4.7K monthly website visits, down 48.4% over the last three months. Brimstone Energy's team declined 7.8% over the past year.

Latest monthly visits4.7K 3-month web change-48.4% 1-year team growth-7.8%
Monthly website visits48 observations · Oct 2020–Jul 2026
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Comparisons

Brimstone Energy compared with similar companies

Dealroom’s weighted taxonomy model identifies the closest operating peers. Company identity and context stay open; selected comparison metrics preview what is available in the platform.

Showing 8 of the closest matchesCompare every metric →

Talent graph

Brimstone Energy's talent

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Team profiled 10 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 2 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Investors

11 investors on Brimstone Energy's cap table

Sourced from Dealroom's funding and investor records. Investor profile links are shown where available.

Seed 5 investors entered at this stage
US National Science Foundation
ARPA-E
DCVC
Breakthrough Energy Ventures
US Department of Energy
Series A 4 investors entered at this stage
Collaborative Fund
Fifth Wall Ventures
Climate Pledge Fund
ACCELR8
Other known 2 additional known investors
Stanford University
The Strauch Cleantech to Market Program

Global footprint

Where Brimstone Energy has talent and traffic

Workforce by country
4 countries with
team presence
🇺🇸 United States90.7%
🇧🇷 Brazil5.6%
🇨🇦 Canada1.9%
🇫🇷 France1.9%
4 countries shown

In the news

Latest news about Brimstone Energy

Recent press, funding announcements, and product moves mentioning Brimstone Energy — open to read from the original sources.

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Market sentiment

What the market is saying about Brimstone Energy

An AI-synthesized read of the highest-engagement posts about Brimstone 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

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