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Elstor Oy

Elstor Oy

Private
LappeenrantaEnergy & Sustainabilityhttps://elstor.fi/

Last Round

Accelerator

Jul 14, 2025

Total Funding Raised

$4.64M

Momentum

Top 5%

of companies Caplight tracks

Company Overview

Elstor Oy is a clean energy technology company that develops and manufactures thermal energy storage systems for industrial steam and heat production.

Sector

Energy & Sustainability

Verticals

Energy Storage, Renewable Energy, Energy Management, Smart Grid

Business Model

B2B

Customer Profile

Services & Consulting, Hardware Sales

AI Layer

Application

Keywords

thermal energy storagethermal batterypower-to-heatsteam as a serviceGSaaSindustrial steamgrid balancingdemand responseenergy storagedecarbonizationclean techindustrial decarbonizationenergy flexibilitysmart gridheat storage

Historical Pricing

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Caplight Momentum Score

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Elstor Oy Comparables

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Elstor Oy comparables — related companies by embedding similarity
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Polar Night Energy
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Kraftblock
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Brenmiller Energy
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Elstor Oy Funding Rounds

Historical fundraising activity

Data table
RoundDateAmount RaisedValuationInvestorsSources
AcceleratorJul 14, 2025
DebtOct 5, 2021

Key People

Founding team and executive leadership

Kari Suninen

CEO, Co-founder

Founding Team

Elstor Oy Investors

Notable investors and investment history

Elstor Oy investors
InvestorRounds
The Finnish Climate FundDebt
The Clean FightAccelerator

Market signals

Structured signals derived from secondary market and firmographic data.

  • Aug 22, 2026

    Monthly visitors increased 1136% MoM.

  • Jun 23, 2026

    Monthly visitors increased 35% MoM, reaching 2.1K.

Elstor Oy Filings

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Elstor Oy filings preview — column headings only; records require access
TypeDateAmount OfferedAmount SoldFilingPagesDownload

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Frequently Asked Questions

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

Is Elstor Oy a public or private company?

Elstor Oy is a private company.

What is the current stock price of Elstor Oy?

Elstor Oy is a private company with no public stock price. No recent secondary market data is available.

How much is Elstor Oy worth (valuation)?

Valuation information for Elstor Oy is not publicly available.

Can I buy Elstor Oy stock?

Elstor Oy shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors. Visit https://www.caplight.com to learn more.

When was Elstor Oy's last funding round?

Elstor Oy's most recent funding round was Accelerator on July 14, 2025.

Who are the main investors in Elstor Oy?

Key investors in Elstor Oy include The Finnish Climate Fund.

Will Elstor Oy IPO soon?

No public IPO plans have been announced for Elstor Oy.

How can I track Elstor Oy secondary market activity?

Caplight tracks bids, offers, and trades for private companies. Visit https://www.caplight.com to monitor Elstor Oy's secondary market activity and sign up for updates.

Firmographic Details

HeadquartersLappeenranta
Employee Range14
Year Founded2017
Last FundingJul 14, 2025

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