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Kraftblock

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Kraftblock provides an eco-friendly, cost-efficient and highly scalable, modular thermal energy storage system

Sulzbach/Saar, GermanyFounded 2014Energy
Valuation $50–100M Last recorded · 2023
Revenue $1–10M Latest reported FY
Headcount <100 Current team size
Total funding $10–50M Disclosed equity funding
Unlock exact values This page shows ranges. Dealroom has the exact numbers for Kraftblock and the history behind them.

About Kraftblock

Kraftblock is a pioneering startup that specializes in thermal energy storage systems. Their core technology revolves around a uniquely designed Thermal Energy Storage System, which is both eco-friendly and cost-efficient. This system is highly scalable and modular, making it suitable for large-scale applications. Kraftblock's technology is particularly notable for its use of up to 85% recycled materials and its ability to operate with a variety of heat transfer media, such as air, flue gas, and oil.

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The company primarily serves industrial clients who need to manage waste heat and electrical power more efficiently. These clients are often in sectors where energy consumption and production can vary significantly over time. By using Kraftblock's storage systems, these industries can stabilize their energy usage, thereby improving efficiency and reducing costs.

Kraftblock operates in the renewable energy market, focusing on the critical need to decouple energy production from consumption. This is essential for the global transition to renewable energy sources like solar and wind, which are not always available when energy demand is high. The company's mission aligns with the broader goal of combating climate change by making renewable energy more reliable and accessible.

The business model of Kraftblock involves selling their modular thermal energy storage systems to industrial clients. These systems are designed to be extendable, with containers ranging from 30 to 60 MWh, allowing clients to scale up as needed. The company generates revenue through the sale of these systems and potentially through long-term service agreements for maintenance and support.

In summary, Kraftblock is addressing a critical need in the renewable energy sector by providing a scalable, cost-efficient, and eco-friendly solution for energy storage. Their technology not only helps industries manage waste heat and electrical power more effectively but also supports the global shift towards sustainable energy.

Source: Dealroom company data

At a glance

Status
Operational
Founded
2014
Headquarters
Sulzbach/Saar, Germany
Employees
45
Open positions
2
Dealroom signal
89.3/100
Sub-industry
Energy Storage
Sector
Energy, Sustainable Development Goals, EIC, Thermal Energy Storage, Climate Tech, Stationary Energy Storage, Novel Energy, Other Categories Novel Energy, Circular Economy, EIT Supernovas
Technology
Hardware, Deep Tech
Business model
Manufacturing
Client focus
b2b

Funding history

10 recorded events

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
SUPPORT PROGRAM✓Other financing May 2025 $0 — Third Derivative ↗
SERIES B✓Equity / VC Aug 2023 $22M $88M Redstone ↗
Showing the latest 2 of 10 recorded eventsBook a demo for the full funding history →

Financials

Revenue, earnings and profit over time

Revenue, earnings and other financial measures where available. Years marked “E” are estimates.

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Growth signals

Kraftblock website traffic

Latest recorded traffic for Kraftblock is 9.1K monthly website visits, up 46.8% over the last three months. Kraftblock's team grew 2.3% over the past year.

Latest monthly visits9.1K 3-month web change+46.8% 1-year team growth+2.3%
Summary metrics are public; monthly history is available with a demoCompare with peers →

Similar companies

Closest operating peers by Dealroom taxonomy

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Investments and acquisitions

Capital deployed

Recent portfolio relationships for companies that also act as investors or acquirers.

Investors

16 investors on the cap table

From Dealroom's funding and investor records, grouped by the round each investor first entered.

Seed5 investors entered at this stage

  • Saarländische Wagnisfinanzierungsgesellschaft
  • Freigeist Capital
  • Frank Thelen
  • EIT Climate KIC
  • European Innovation Council

Series A2 investors entered at this stage

  • Koolen Industries
  • Redstone

Other known investors9 additional known investors

  • Third Derivative
  • VERBUND X Accelerator
  • A&G Energy Transition Tech Fund
  • EnergyLab
  • Finindus
  • Plug and Play
  • RESPOND Accelerator
  • TechQuartier
  • Xpreneurs
Team profiled 10 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 4 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Global footprint

Workforce and web traffic by country
Workforce by country
8 countries with
team presence
🇩🇪 Germany71.9%
🇫🇷 France6.3%
🇳🇱 Netherlands6.3%
🇨🇭 Switzerland3.1%
🇪🇸 Spain3.1%
Top 5 of 8 shown

Market sentiment

Posts on X, past 7 days

An AI-synthesised read of the highest-engagement posts about Kraftblock on X, ranked by likes and reposts, corporate channels excluded.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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