Silbat
Silbat is a Madrid-based energy storage startup developing silicon-based thermal energy storage technology to convert intermittent renewable energy into dispatchable electricity, serving renewable energy and military resilience sectors across Europe.
- Company typePrivate
- Founded2019
- HeadquartersMadrid, Spain
- Headcount1–10
- GTM typeB2B
- OfferingHardware or Manufacturing
What Silbat does
Silbat is a Madrid-based energy storage startup founded in 2019 that develops silicon-based thermal energy storage technology intended to convert intermittent renewable energy sources into fully dispatchable electricity. The company's core innovation is the use of silicon as the storage medium, which the firm claims delivers high energy density and long operational lifespan relative to conventional battery storage systems. The company operates with 1-10 employees and has been sustained primarily through a mix of Spanish and EU public grants and strategic corporate equity investment rather than disclosed commercial revenue.
Silbat's product surface spans two principal lines: a long-duration thermal energy storage solution for renewable energy operators addressing solar and wind intermittency, and the ARMIC project — announced in February 2026 — which adapts the underlying technology for military resilience applications targeting uninterrupted power supply for at least 14 days, with stated benefits in cost efficiency and technological sovereignty. Both products share the same silicon-based thermal storage foundation but target distinct procurement channels: utility-scale renewable developers and defense ministries respectively.
The company's go-to-market and revenue model are not publicly disclosed; no pricing structures, customer contracts, or revenue figures have been documented. Capital sources include Baker Hughes and EIT InnoEnergy as repeat strategic investors from 2022 onward, Soltec (via Aurora) acquiring a 12.2% stake in May 2023, Shell co-investing in September 2024, Repsol entering in 2025, and substantial non-dilutive funding from CDTI, the Spanish Ministry of Industry and Tourism, the Ministry for Ecological Transition, the Ministry of Science and Innovation, and Comunidad de Madrid. Silbat operates primarily in Europe and is led by CEO Ignacio Luque Heredia and CSO Antonio Luque, alongside three additional directors.
Silbat firmographics
Firmographics- Name
- Silbat
- Legal name
- Silbat
- Website
- https://silbat.com
- Company type
- Private
- Founded year
- 2019
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- Silbat is a Madrid-based energy storage startup developing silicon-based thermal energy storage technology to convert intermittent renewable energy into dispatchable electricity, serving renewable energy and military resilience sectors across Europe.
- Ownership category
- akta.pro rank
Silbat industry classification
Industry- Product category
- Long-Duration Energy Storage
- NAICS
- Metal Tank (Heavy Gauge) Manufacturing (33242)
- SIC
- Industrial Process Furnaces & Ovens (3567), Cogeneration Services & Small Power Producers (4991)
- akta.pro primary industry
- Thermal LDES (High-Temperature, Molten Salt, Carnot/Heat-to-Power) (EUAFADAC)
Keywords
Where Silbat is headquartered
LocationHeadquarters
- HQ city
- Madrid
- HQ country
- Spain
- HQ region
- Europe
Markets served
Silbat business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Personnel, Technology or R&D, Operations, Marketing or Sales, Infrastructure
Silbat product offering
Product offeringCore offering
Silbat develops and commercializes silicon-based thermal energy storage technology designed for long-duration energy storage. The proprietary storage medium enables high energy density and extended discharge durations (up to ~14 days) to address renewable energy intermittency and provide resilient backup power for military and industrial installations.
Product overview
Silbat is a Spanish energy storage startup offering silicon-based thermal energy storage technology. The company's core product is a long-duration energy storage solution that leverages silicon's properties to deliver high energy density and extended operational lifespan. The ARMIC project represents a specific military-focused application of this technology, targeting uninterrupted power supply capabilities for at least 14 days.
Differentiator
Problem solved
Functional benefit
Products and services
- Silicon-Based Thermal Energy Storage System
Quantifiable outcome
- Uninterrupted power supply for at least 14 days
- +3 more outcomes
Companies that use Silbat
Customer profileSegments2 records
Ideal customer profiles2 records
Silbat technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature1 record
Silbat partnerships and signals
Strategic signalScale indicators1 record
Recent moves6 records
Expansion highlights5 records
Silbat competitors and assessment
Company assessmentDirect peers
- 1414 Degrees: Australian company developing molten silicon thermal energy storage (TESS) technology, the most direct technical analog to Silbat's silicon-based thermal storage. Both target long-duration storage using silicon as the thermal medium, addressing grid-scale renewable and industrial heat applications.
- Antora Energy: US-based startup commercializing thermal energy storage using carbon blocks to convert intermittent renewables into firm electricity and industrial heat. Direct competitor in the long-duration thermal storage space with similar GTM targeting utility and industrial customers.
- Malta Inc. US startup developing pumped heat thermal storage for long-duration grid storage. Competes with Silbat in the thermal-based LDES category targeting multi-day to multi-week discharge durations for renewables integration.
- Energy Vault: Swiss/US publicly-listed company (NYSE: NRGV) developing gravity-based and hybrid LDES solutions. Direct competitor in the long-duration storage category addressing renewable intermittency, with broader technology portfolio and significantly more capital.
- Brenmiller Energy: Israel-based thermal energy storage provider (bGen) targeting industrial heat and power applications. Comparable in offering thermal storage to industrial and utility customers with focus on decarbonizing heat processes.
- Rondo Energy: US-based company offering industrial heat battery storage using solid media for high-temperature industrial heat decarbonization. Comparable thermal storage technology targeting industrial customers and addressing long-duration thermal energy supply.
- Kraftblock: German company providing modular high-temperature thermal energy storage using recycled steel slag as storage medium. European-based direct peer in the thermal LDES space serving industrial and renewable integration applications.
Broad incumbents
- Siemens Energy: Global energy technology incumbent providing broad portfolio including renewable generation, grid infrastructure, and emerging storage solutions. Overlaps with Silbat in addressing renewable integration and grid resilience but at much larger scale and broader scope.
- Baker Hughes: Global energy technology and services company that is both a Silbat investor and an adjacent player in energy storage, particularly in industrial and oil & gas applications. Represents both incumbent and strategic ecosystem peer.
Emerging players
- Form Energy: US-based developer of iron-air battery systems for multi-day (100+ hour) discharge, targeting the same long-duration storage market as Silbat with a different (electrochemical) technology approach. Closely comparable on application/use case though different storage mechanism.
Market position
Strengths4 records
Weaknesses5 records
Competitive moat3 records
Key risks6 records
Key highlights6 records
Customer concentration
Silbat social profiles
Digital presenceSilbat financial estimates
Financial estimateRevenue estimate
Valuation estimate
Silbat leadership team
Management profileNumber of profiles
Profiles5 records
Silbat funding detail
Funding detailFunding overview
Funding rounds15 records
Investors10 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Silbat M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Silbat
What does Silbat do?
Silbat develops and commercializes silicon-based thermal energy storage technology designed for long-duration energy storage. The proprietary storage medium enables high energy density and extended discharge durations (up to ~14 days) to address renewable energy intermittency and provide resilient backup power for military and industrial installations.
Is Silbat a public or private company?
Silbat is a private company. It is classified as venture growth investor backed and is currently operating.
When was Silbat founded?
Silbat was founded in 2019. It employs 1 to 10 people.
Where is Silbat based?
Silbat is headquartered in Madrid, Spain, in the Europe region.
Who are Silbat's main competitors?
Direct peers on record are 1414 Degrees, Antora Energy, Malta Inc., Energy Vault, Brenmiller Energy, Rondo Energy and Kraftblock. Broad incumbents are Siemens Energy and Baker Hughes. Form Energy is listed as an emerging player.
Does Silbat have an API?
No public API is recorded for Silbat.
What industry is Silbat in?
Silbat's product category is Long-Duration Energy Storage. Its primary akta.pro industry code is EUAFADAC, Thermal LDES (High-Temperature, Molten Salt, Carnot/Heat-to-Power). Its NAICS code is 33242 and its SIC code is 3567.