Cartesian Overview

  • Year Founded
  • 2023

Year Founded

  • Status
  • Private

  • Employees
  • 10

Employees

  • Latest Deal Type
  • Accelerator/​Inc

  • Investors
  • 7

Cartesian General Information

Description

Manufacturer of thermal batteries designed to turn buildings into flexible energy assets. The company offers modular storage units utilizing phase change material technology, latent heat storage, stainless steel heat exchangers, intelligent control boards, thermal insulation, and bio-based materials, enabling commercial and industrial clients to reduce grid peak demand and increase thermal capacity without upgrading existing infrastructure.

Contact Information

Website
www.cartesian.energy
Ownership Status
Privately Held (backing)
Financing Status
Venture Capital-Backed
Corporate Office
  • Tempevegen 22
  • 7031 Trondheim
  • Norway
+47 90
Primary Industry
Energy Storage
Other Industries
Alternative Energy Equipment
Vertical(s)
CleanTech, Climate Tech
Corporate Office
  • Tempevegen 22
  • 7031 Trondheim
  • Norway
+47 90

Cartesian Timeline

202420252026
Financing RoundCaptured Employee CountEstimated Employee Growth

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Cartesian Valuation & Funding

Deal Type Date Amount Raised to Date Post-Val Status Stage
4. Accelerator/Incubator 11-Sep-2025 Completed Generating Revenue
3. Seed Round 02-Jun-2025 Completed Generating Revenue
2. Seed Round 15-Jan-2025 $176K $1.89M Completed Generating Revenue
1. Seed Round 01-Jan-2024 $1.71M $1.71M Completed Generating Revenue
To view Cartesian’s complete valuation and funding history, request access »

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Cartesian Comparisons

Description
Primary
Industry
HQ Location
Employees
Total Raised
Post Valuation
Last
Financing
Details
Manufacturer of thermal batteries designed to turn buildings into flexible energy assets. The company offers modular sto
Energy Storage
Trondheim, Norway
10 As of 2025

Irvine, CA
 

Thornton, United Kingdom
 
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Cartesian Competitors (8)

One of Cartesian’s 8 competitors is Nostromo Energy, a Formerly VC-backed company based in Irvine, CA.

Company Name Financing Status Location Employees Total Raised Last Financing Date/Type Last Financing Amount
Nostromo Energy Formerly VC-backed Irvine, CA
Organic Heat Exchangers Venture Capital-Backed Thornton, United Kingdom
Cylib Venture Capital-Backed Aachen, Germany
Amorton Private Equity-Backed Kitakata, Japan
HeatVentors Venture Capital-Backed Mezotur, Hungary
You’re viewing 5 of 8 competitors. Get the full list »

Cartesian Patents

  • 6

    Total Documents Applications and Grants

  • Total Patents Families

  • Granted

  • 4

    Pending

  • Expiring in next 12 mo

Cartesian Recent Patent Activity

Publication ID Patent Title Status First Filing Date Technology (CPC) Citations
EP-4666019-A1 Method and system for controling a state-of-charge of phase change material storage systems Pending 15-Feb-2023
WO-2024172663-A1 Method and system for controling a state-of-charge of phase change material storage systems Inactive 15-Feb-2023
US-20260235367-A1 Method and system for controlling a state-of-charge of phase change material storage systems Pending 15-Feb-2023
EP-4548032-A1 Thermal energy storage system Pending 30-Jun-2022
US-20250389493-A1 Thermal energy storage system Pending 30-Jun-2022 F28D20/021
To view Cartesian’s complete patent history, request access »

Cartesian Signals

Growth Rate

Weekly
Growth
Weekly Growth

Size Multiple

Median
Size Multiple

Key Data Points

Similarweb Unique Visitors

Majestic Referring Domains

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Cartesian Investors (7)

Investor Name Investor Type Holding Investor Since Participating Rounds
Amazon Sustainability Accelerator Accelerator/Incubator Minority
Devico Corporation Minority
Ystvika Holding Venture Capital Minority
Eviny Ventures Corporate Venture Capital Minority
Kongsberg Innovation Accelerator/Incubator Minority
You’re viewing 5 of 7 investors. Get the full list »

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Cartesian FAQs

  • When was Cartesian founded?

    Cartesian was founded in 2023.

  • Where is Cartesian headquartered?

    Cartesian is headquartered in Trondheim, Norway.

  • What is the size of Cartesian?

    Cartesian has 10 total employees.

  • What industry is Cartesian in?

    Cartesian’s primary industry is Energy Storage.

  • Is Cartesian a private or public company?

    Cartesian is a Private company.

  • What is Cartesian’s current revenue?

    The current revenue for Cartesian is .

  • How much funding has Cartesian raised over time?

    Cartesian has raised $1.89M.

  • Who are Cartesian’s investors?

    Amazon Sustainability Accelerator, Devico, Ystvika Holding, Eviny Ventures, and Kongsberg Innovation are 5 of 7 investors who have invested in Cartesian.

  • Who are Cartesian’s competitors?

    Nostromo Energy, Organic Heat Exchangers, Cylib, Amorton, and HeatVentors are some of the 8 competitors of Cartesian.

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