Elstor Oy

Private

LappeenrantaEnergy & Sustainabilityhttps://elstor.fi/

Last Round

Accelerator

Jul 14, 2025

Total Funding Raised

$4.64M

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

Hardware Sales, Services & Consulting

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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Elstor Oy Comps

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Elstor Oy comps — public and private peers by sector, stage, and business model
Company	Status	Est. Valuation	Rev Multiple
OpenAI	Private	$86.0B	~40x
Cohere	Private	$5.0B	--
Competitor 1	Public	$XX.XB	XXx
Competitor 2	Public	$XX.XB	XXx

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Elstor Oy Funding Rounds

Historical fundraising activity

Data table
Round	Date	Amount Raised	Valuation	Investors	Sources
Accelerator	Jul 14, 2025
Debt	Oct 5, 2021

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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
Investor	Rounds
The Finnish Climate Fund	Debt
The Clean Fight	Accelerator

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Elstor Oy Filings

SEC and related filings with document metadata.

Data table
Typed	Date	Amount Offered	Amount Sold	Filling	Pages	Download
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Elstor Oy Filings

SEC and related filings with document metadata.

Frequently Asked Questions

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Firmographic Details

HeadquartersLappeenranta

Employee Range17

Year Founded2017

Last FundingJul 14, 2025

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