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Fourier

Fourier

Private
Palo Alto, CaliforniaEnergy & Sustainabilityhttps://fourier.earth/

Last Round

Series A

Apr 2, 2025

Total Funding Raised

$18.5M

Momentum

Top 10%

of companies Caplight tracks

Company Overview

Fourier is an alternative energy equipment company that develops modular, on-site, on-demand hydrogen production systems.

Sector

Energy & Sustainability

Verticals

Renewable Energy, Energy Storage, Alternative Fuels

Business Model

B2B

Customer Profile

Hardware Sales, Usage-Based SaaS

AI Layer

Application

Keywords

hydrogen productionelectrolyzerhydrogen as a serviceHaaSon-site hydrogengreen hydrogenmodular electrolyzerdecentralized energysoftware-defined hardwareindustrial hydrogenenergy storageclean energy techhydrogen infrastructuredistributed hydrogenclimate tech

Historical Pricing

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Caplight Momentum Score

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Fourier Comparables

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CompanySimilarityMarket Cap

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Fourier Funding Rounds

Historical fundraising activity

Data table
RoundDateAmount RaisedValuationInvestorsSources
Series AApr 2, 2025
SeedMar 20, 2023

Key People

Founding team and executive leadership

Siva Yellamraju

Co-Founder, CEO

Founding Team

Fourier Investors

Notable investors and investment history

Fourier investors
InvestorRounds
GSBackersSeries A
Airbus VenturesSeries A
My Climate Journey CollectiveSeries A
General CatalystSeries A, Seed
Borusan VenturesSeries A
Positive VenturesSeries A
Paramark VenturesSeries A

Market signals

Structured signals derived from secondary market and firmographic data.

  • Jun 20, 2026

    Monthly visitors increased 56% MoM.

  • Jan 15, 2026

    Added Heat Treat Today, a media/publishing startup, as a customer.

Fourier Filings

SEC and related filings with document metadata.

Data table
TypedDateAmount OfferedAmount SoldFillingPagesDownload
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Fourier Filings

SEC and related filings with document metadata.

Frequently Asked Questions

Common questions about Fourier's valuation, stock price, and market status.

Firmographic Details

HeadquartersPalo Alto, California
Employee Range49
Year Founded2022
Last FundingApr 2, 2025

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