K
Kraftblock
Energy · Sulzbach/Saar, Germany · Founded 2014
Kraftblock provides an eco-friendly, cost-efficient and highly scalable, modular thermal energy storage system MoreLess
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.
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.
Keywords: Thermal Energy Storage, Renewable Energy, Industrial Waste Heat, Electrical Power, Scalable, Modular, Eco-friendly, Cost-efficient, High Energy Density, Recycled Materials.
Company overview
Kraftblock company information
The essential company record, classifications and operating signals in one place.
- Status
- Operational
- Founded
- 2014
- Headquarters
- Sulzbach/Saar, Germany
- Employees
- 45
- Open positions
- 2
- Dealroom signal
- 89.3
Valuation & funding
Kraftblock funding history
Company financing events and reported valuations.
| Deal type | Date | Amount | Valuation | Investors | Source |
|---|---|---|---|---|---|
| SUPPORT PROGRAM✓Other financing | May 2025 | $0 | — | Third Derivative | ↗ |
| SERIES B✓Equity / VC | Aug 2023 | $22M | $88M | Redstone | ↗ |
| SUPPORT PROGRAM✓Other financing | Oct 2022 | $0 | — | VERBUND X Accelerator | ↗ |
| OtherOther financing | Apr 2022 | $1.8M | — | Undisclosed | — |
| GRANT✓Other financing | Jun 2021 | $1.8M | — | European Innovation Council | — |
| EARLY VC✓Equity / VC | Apr 2021 | Undisclosed | — | ||
| SERIES A✓Equity / VC | Sep 2020 | Koolen Industries | — | ||
| GRANT✓Other financing | Jan 2020 | EIT Climate KIC | — | ||
| SEED✓Equity / VC | Dec 2018 | Frank Thelen | — | ||
| SEED✓Equity / VC | Oct 2018 | Freigeist Capital | — |
Financials
Revenue, earnings and profit over time
Reported history and available estimates. Estimated years are marked “E”; sparse fields are left blank rather than inferred.
| Year | Revenue | Growth | Profit | Margin |
|---|---|---|---|---|
| 2026 | $2.1M | 0% | −$26K | -1.2% |
| 2025 | $2.1M | 0% | −$26K | -1.2% |
| 2024 | $2.1M | 0% | −$26K | -1.2% |
| 2023 | $2.1M | 0% | ||
| 2022 | $2.1M | +478.4% | ||
| 2021 | $371K | +1.6% | ||
| 2020 | $365K | — |
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.
Hiring
Open positions at Kraftblock
Current openings linked to this company in Dealroom.
Comparisons
Kraftblock compared with similar companies
Dealroom’s weighted taxonomy model identifies the closest operating peers. Company identity and context stay open; selected comparison metrics preview what is available in the platform.
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|---|---|---|---|---|---|
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 CorPower OceanWave Power. To Power the planet |
Stockholms kommun, Sweden | Operational | |||
 Sadako TechnologiesStart-up specialized in AI and robotics for the waste and recycling industries |
L'Hospitalet de Llobregat, Spain | Operational |
Talent graph
Kraftblock's talent
Source: Dealroom Talent Intelligence.
Global footprint
Where Kraftblock has talent and traffic
team presence
In the news
Latest news about Kraftblock
Recent press, funding announcements, and product moves mentioning Kraftblock — open to read from the original sources.
Market sentiment
What the market is saying about Kraftblock
An AI-synthesized read of the highest-engagement posts about Kraftblock on X over the past 7 days. We rank by likes & retweets, ignore corporate channels, and surface the themes that broke out from real people.
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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