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Carester

Energy · Lyon, France · Founded 2019

European leader in sustainable rare-earth element (REE) recycling and separation

Company overview

Carester company information

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

Status
Operational
Founded
2019
Headquarters
Lyon, France
Employees
49
Open positions
7
Dealroom signal
92.0
client focusb2btechnologyArtificial Intelligencesub industryWatersub industryWaste Solutionsub industryConstructionbusiness modelManufacturingbusiness modelSaaSsectorRecyclingsectorMining TechnologiesindustryReal EstatesectorSpinoutsectorSustainable Development GoalssectorClimate TechsectorCircular Economy

Valuation & funding

Carester funding history

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
GROWTH EQUITY NON VCOther financing Apr 2026 $0 InfraVia Capital · USA Rare Earth
GRANTOther financing May 2025 $117M French Government
PROJECT, REAL ESTATE, INFRASTRUCTURE FINANCEOther financing May 2025 $121M Iwatani
SPINOUTOther financing Jan 2019 $0 French Alternative Energies and Atomic Energy Commission - CEA
Showing 4 recorded eventsUnlock the complete deal history →

Financials

Workforce over time

Available workforce history. Financial fields without reported data are omitted.

YearEmployees
2026 49
2025 31
2024 30
2023 25
Company filings, research estimates and Dealroom dataOpen the full financial model →

Growth signals

Carester website traffic

Latest recorded traffic for Carester is 1.3K monthly website visits, down 81.9% over the last three months. Carester's team grew 58.1% over the past year.

Latest monthly visits1.3K 3-month web change-81.9% 1-year team growth+58.1%
Monthly website visits40 observations · Feb 2023–Jul 2026
Hover or focus a point to see its exact monthly valueCompare with peers →

Comparisons

Carester 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

Carester's talent

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Team profiled 1 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 1 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

6 investors on Carester's cap table

Sourced from Dealroom's funding and investor records.

Seed 1 investor entered at this stage
French Government
Series B+ 2 investors entered at this stage
InfraVia Capital
USA Rare Earth
Other known 3 additional known investors
French Alternative Energies and Atomic Energy Commission - CEA
Iwatani
TotalEnergies

Global footprint

Where Carester has talent and traffic

Workforce by country
🇫🇷 France · Lyon HQ
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In the news

Latest news about Carester

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

See all news

Market sentiment

What the market is saying about Carester

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