Eternal Sun

Delft, Netherlands Founded: 2011 • Age: 15 yrs Acquired By Bolster Investment Partners
Solar module testing equipment is supplied to the photovoltaic sector.
Annual revenue - Latest available
Total funding $2.5M 1 rounds
Employees - Tracked headcount
Investors 3 Known backers
Products 4 Services tracked
Competitors 10 Brand Intelligence

About Eternal Sun

Eternal Sun is a company based in Delft (Netherlands) founded in 2011 was acquired by Bolster Investment Partners in May 2025. Eternal Sun has raised $2.49 million across 1 funding round from investors including ABN AMRO, Vermec and Bolster Investment Partners. Eternal Sun offers products and services including LED Light Soaker, XENON Solar Flasher, Temperature Controlled Lab Flasher, and Large Area Steady State. Eternal Sun operates in a competitive market with competitors including Morgan Solar, BT Imaging, PV Evolution Labs, PSE Instruments and Bright Spot Automation, among others.

  • Headquarter Delft, Netherlands
  • Sectors
    Energy & Utilities
  • Email
    ***********
  • Phone
    *********
  • Website
    *********
  • Social
    *********
Operational Areas
Energy & Utilities → Renewable & Clean Energy
Key Metrics
  • Annual Revenue
  • Net Profit
  • EBITDA
  • Total Equity Funding
    $2.49 M (USD)

    in 1 rounds

  • Latest Funding Round
    $2.49 M (USD), Series A

    Dec 03, 2014

  • Investors
    ABN AMRO

    & 2 more

  • Employee Count
    Employee Count
  • Acquired by
    Bolster Investment Partners

    & 1 more

    (May 07, 2025)

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Products & Services of Eternal Sun

Eternal Sun offers a comprehensive portfolio of products and services, including LED Light Soaker, XENON Solar Flasher, Temperature Controlled Lab Flasher, and Large Area Steady State.

Primary

Provides steady-state simulation for laboratory PV testing

Enables flash-based IV testing for manufacturing and labs

Offers precise temperature control for PV performance analysis

Supports testing of mini-modules and multiple samples

People of Eternal Sun

Headcount 10-50
Employee Profiles 29
Employee Profiles
People
Erik Bentschap Knook
CCO
People
Mark Derks
Director, Finance & Control
People
Florian van Rijn van Alkemade
CEO
People
Stefan Roest
CTO & Co- Founder

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Funding Insights of Eternal Sun

Eternal Sun has successfully raised a total of $2.49M through 1 strategic funding round. The most recent funding activity was a Series A round of $2.49 million completed in December 2014. This substantial capital infusion reflects strong investor confidence in the company's business model, growth potential, and market opportunities. The funding enables strategic expansion, product development, market penetration, and operational scaling to drive long-term value creation and competitive advantage.

  • Total Funding
  • Total Rounds 1
  • Last Round Series A — $2.5M
  • First Round

    (03 Dec 2014)

  • Investors Count 1
Date Amount Transaction Name Valuation Lead Investors Investors
Dec, 2014 Amount Series A - Eternal Sun Valuation

investors

Investors in Eternal Sun

Eternal Sun has secured backing from 3 investors, including venture fund and institutional investors. Prominent investors backing the company include ABN AMRO, Vermec and Bolster Investment Partners.

All
Venture Fund
Institutional
Investor Description Founded Year Domain Location
-
Founded Year Domain Location
Private equity firm
Founded Year Domain Location
ABN AMRO is recognized as a personal bank in the digital era.
Founded Year Domain Location

Investments & Acquisitions by Eternal Sun

Investments

Financial Statements - Eternal Sun

Eternal Sun Comparisons

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Competitors of Eternal Sun

Eternal Sun operates in a dynamic and competitive business environment, facing competition from various established players and emerging companies in the market. The competitive landscape includes prominent companies such as Morgan Solar, BT Imaging, PV Evolution Labs, PSE Instruments and Bright Spot Automation, among others.

Company Name Domain Founded year HQ Location Description
domain founded_year HQ Location
Solar design simulation software solutions are provided for light management.
domain founded_year HQ Location
Inspection tools for photovoltaic manufacturing processes are supplied.
domain founded_year HQ Location
Independent testing services for solar photovoltaic modules are provided.
domain founded_year HQ Location
Solar Testing solutions
domain founded_year HQ Location
Solar panel testing solutions are developed using innovative measurement tools.

Latest news on Eternal Sun

Frequently Asked Questions about Eternal Sun

Eternal Sun was founded in 2011 and raised its 1st funding round 3 years after it was founded.

Eternal Sun is headquartered in Delft, Netherlands. It is registered at Delft, South Holland, Netherlands.

Eternal Sun is a funded company, having raised a total of $2.49M across 1 funding round to date. The company's 1st funding round was a Series A of $2.49M, raised on Dec 03, 2014.

Eternal Sun was founded in 2011 and is based in Delft, Netherlands. Equipment for testing solar modules is provided by the company to support quality assurance in the renewable energy industry. Operations are centered on delivering specialized testing solutions for photovoltaic applications, with a focus on reliability and compliance standards. The companys activities serve manufacturers and researchers across Europe and beyond, contributing to advancements in solar technology.

Eternal Sun's top competitors include BT Imaging, Morgan Solar and PV Evolution Labs.

Eternal Sun offers LED Light Soaker, XENON Solar Flasher, Temperature Controlled Lab Flasher, and Large Area Steady State.

Eternal Sun has 3 investors. Key investors include ABN AMRO, Vermec, and Bolster Investment Partners.

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