Teraloop

What Teraloop does

Teraloop Oy is a Finnish deeptech company, founded in 2014 at the Aalto University campus in Espoo, that designs and manufactures kinetic energy storage systems based on a patented hubless flywheel architecture. Its core product platform — branded Power Loop — stores energy in a high-speed carbon fiber composite rotor suspended by passive and active magnetic bearings and driven by a permanent magnet synchronous motor/generator, enabling sub-10 ms response, 25+ year operational life with no performance degradation, fire-safe operation without chemicals, and approximately 95% DC round-trip efficiency in the Power Loop 1000 variant. The company sells two products: the Power Loop 250 (250 kW nominal, 5 kWh) and the upcoming Power Loop 1000 (up to 1,000 kW, 25 kWh, available early 2026), deployable as standalone units or in containerized arrays.

Teraloop targets enterprise B2B customers including transmission and distribution system operators (TSOs/DSOs), energy-intensive industrial manufacturers, renewable energy generators, EV charging point operators, hydropower operators, rail operators, and island grid operators. The technology is positioned primarily for fast frequency response, synthetic inertia, voltage support, peak shaving, power quality improvement, and as a hybrid companion to lithium-ion battery storage where the flywheel absorbs high-cycle micro-cycles to extend battery life by 2-3x. Named deployments include a 2.2 MW peak dairy factory in the Azores (Pronicol) and a 500 kW plastic moulding facility in southern Italy.

Revenue is generated through direct hardware sales of custom-configured flywheel systems and through participation in regulated grid service markets (fast frequency response, frequency containment reserves, synthetic inertia, voltage support). The go-to-market is enterprise field sales augmented by a strategic distribution partnership with Arteche (Bilbao, Spain) — a September 2024 strategic investor with a permanent board seat and operations in 175+ countries. Earlier strategic backing came from Yaskawa Electric Corporation (Japan, 2017), alongside EU Horizon 2020 grant funding (€50,000 in 2016 and €2.4M in 2019) and ongoing Business Finland co-innovation support.

Name

Teraloop

Legal name

Teraloop Oy

Website

https://teraloop.org

Company type

Private

Founded year

2014

Operating status

Operating

Headcount range

11–50 employees

Short description

Teraloop Oy is a Finnish deeptech company that designs and sells hubless flywheel kinetic energy storage systems (Power Loop 250 and Power Loop 1000) for grid operators, industrial manufacturers, renewable energy producers, and EV charging infrastructure operators, providing millisecond-response frequency regulation, voltage support, and battery-lifetime extension.

Ownership category

akta.pro rank

Product category

Kinetic Energy Storage Systems (Flywheel Energy Storage)

NAICS

Turbine and Turbine Generator Set Units Manufacturing (333611), Mechanical Power Transmission Equipment Manufacturing (333613)

SIC

Engines & Turbines (3510), Motors & Generators (3621)

akta.pro primary industry

Energy Storage Systems (BESS, Flywheels, Batteries) (HDABAKAC)

akta.pro secondary industry

Microturbines, Fuel Cells & Distributed Generation Prime Movers (IMAHAFAH)

Keywords

• Flywheel energy storage
• Kinetic energy storage
• Grid frequency regulation
• Renewable energy storage
• Industrial power quality

Headquarters

HQ city

Espoo

HQ country

Finland

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Technology or R&D, Personnel, Supply Chain, Operations, Marketing or Sales, Infrastructure

Revenue model

1. Flywheel Energy Storage Hardware Sales: Direct sale of flywheel energy storage systems (Power Loop 250 and Power Loop 1000) to industrial customers, utilities, and renewable energy operators. Systems can be deployed as standalone units or in containerized arrays for larger power requirements.
2. Grid Services and Ancillary Services: Revenue generation through participation in regulated energy markets including Fast Frequency Response (FFR), Frequency Containment Reserves (FCR), synthetic inertia, and voltage support services.

Go-to-market motion1 record

Distribution channels4 records

Marketing channels7 records

Core offering

Teraloop designs, manufactures, and sells kinetic energy storage systems (flywheels) for utility and industrial customers. Its flagship products are the Power Loop 250 (250 kW nominal / 400 kW peak power, 5 kWh) and Power Loop 1000 (up to 1000 kW, 25 kWh), based on a patented hubless rotor with carbon fiber composite materials, magnetic levitation, and a permanent magnet motor/generator. Systems are delivered as standalone units or containerized arrays for AC or DC connection, with sub-10 ms response and 25+ year operational life.

Product overview

Teraloop offers a portfolio of kinetic energy storage products based on patented hubless flywheel technology. The core products are the Power Loop 250 (250 kW nominal power) and Power Loop 1000 (up to 1000 kW power rating). Both products utilize the same FESS (Flywheel Energy Storage Systems) platform featuring hubless rotor design with carbon fiber composite materials and magnetic levitation. The systems can be deployed as standalone units or in containerized arrays for larger power requirements. Applications include grid frequency support, battery lifetime extension, EV fast charging, and industrial power quality management.

Differentiator

Problem solved

Functional benefit

Brands

• Power Loop 250: Patented hubless flywheel technology with 250 kW power rating, 5 kWh energy capacity, available as plug-and-play solution for AC and DC connection.
• Power Loop 1000
• PowerLoop

Products and services

• Power Loop 250 Hubless flywheel energy storage system for industrial and grid customers with 250 kW nominal power, 400 kW peak power, and 5 kWh energy capacity, in a footprint of less than 1 m². Delivers 100% of nominal power in less than 10 milliseconds, supports unlimited charge/discharge cycles with no performance degradation, and a 25+ year operational lifetime. Available as a plug-and-play unit with AC or DC connection options, deployable as standalone units or in containerized arrays.
• Power Loop 1000 High-power hubless flywheel energy storage system with up to 1000 kW power rating, 25 kWh energy capacity, approximately 95% DC round-trip efficiency, approximately 90% AC round-trip efficiency, and 10 ms response time. Designed for applications requiring more power in less space, available in early 2026 in a footprint of less than 1 m² with unlimited cycles and 25+ year operational life.

Quantifiable outcome

• Battery lifetime extension of 2-3x when flywheels handle micro-cycles in hybrid BESS/FESS systems
• +5 more outcomes

Named customers2 records

Segments7 records

Ideal customer profiles6 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

Eight partnerships are on record, tiered core and minor.

• BESTrotors ConsortiumcoreStrategic or Co-development Partner · 1 January 2025Business Finland funded R&D project with Aalto University to improve reliability, resilience, and commercial performance of high-speed flywheel energy storage systems through development of backup bearings and rotor position sensing technology.
• Arteche GroupcoreStrategic or Co-development Partner · 6 September 2024Strategic investment from Arteche, a global leader in electrical energy measurement and monitoring solutions based in Bilbao, Spain. Arteche holds a permanent position on Teraloop's Board of Directors ensuring ongoing strategic alignment. Partnership provides access to global markets including Spain, Australia, and Mexico, leveraging Arteche's presence in 175+ countries with 13 factories across Europe, America, Asia, and Oceania.
• SoftCompEl ConsortiumcoreStrategic or Co-development Partner · 7 July 2022M-ERA.NET international consortium project with SpinDrive, Magnax, Fraunhofer Institute for Manufacturing Technology and Advanced Materials, and Flemish Institute for Technological Research to develop next generation high-performance soft magnetic composites for flywheels, targeting 100 Wh/kg specific energy.
• Aalto UniversitycoreStrategic or Co-development PartnerOngoing research and development collaboration with Aalto University for biobased and functional composite materials research. Teraloop was created in 2014 at the Aalto University campus. Collaboration includes SoftCompEl project and BESTrotors project with university researchers and professors.
• IANOS Project ConsortiumcoreStrategic or Co-development PartnerEuropean Project IANOS (IntegrAted SolutioNs for the DecarbOnization and Smartification of Islands) focused on demonstrating technological solutions for island decarbonization under Horizon 2020. Teraloop's flywheel pilot on Terceira Island, Azores is part of this project.
• Electricidade dos Azores (EDA)coreStrategic or Co-development PartnerKey project partner and entity responsible for the electric system in Terceira (Azores). EDA is working with 20+ entities on the IANOS project and responsible for Island Decarbonization Masterplan coordination in Terceira.
• SMARAGDI ConsortiumminorStrategic or Co-development PartnerBusiness Finland Co-Innovation programme project with Tampere University and companies 3DStep, Ramentor, Meluta, and Luvata to develop high-temperature superconducting magnet technology. Project value 2M € with Teraloop aiming to apply HTS technology to flywheel design.
• Thinking Circular Think TankminorStrategic or Co-development PartnerPartnership with think tank founded by Eveline Lemke, former Deputy Prime Minister of Rhineland-Palatinate, focused on circular economy thinking in energy transition discussions.

Scale indicators13 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Fluence Energy: Large-scale battery energy storage systems provider offering grid-scale lithium-ion storage solutions globally. Competes with Teraloop in the broader grid-scale energy storage market, but specializes in battery rather than flywheel technology.
• Wärtsilä Energy Storage: Major energy storage systems integrator offering grid-scale battery storage solutions. Competes with Teraloop in the broader grid storage market, particularly in renewable integration and grid services, though focuses on battery-based rather than flywheel technology.
• Saft (TotalEnergies): Industrial battery manufacturer owned by TotalEnergies, offering energy storage solutions for grid, industrial, and transportation applications. Competes with Teraloop in industrial energy storage, particularly for power quality and backup applications traditionally served by batteries.

Direct peers

• Amber Kinetics: US-based flywheel energy storage company offering long-duration kinetic storage systems for grid applications. Directly competes with Teraloop in flywheel technology serving utilities and grid operators, with comparable value proposition around cycle life and grid services.
• Beacon Power: US-based flywheel energy storage company historically focused on grid frequency regulation services. Direct historical peer in the flywheel grid services space; provides relevant competitive context for Teraloop's grid ancillary services value proposition.
• Stornetic: German flywheel energy storage company developing kinetic storage systems for grid stabilization and industrial applications. Directly competes with Teraloop in the European flywheel market, targeting similar grid and industrial customers with kinetic storage technology.
• Vycon: US-based flywheel energy storage company offering kinetic storage solutions primarily for UPS and power quality applications. Direct competitor to Teraloop in flywheel technology, with overlapping target markets in industrial power quality and critical power applications.

Emerging players

• Oxto Energy: UK-based flywheel energy storage startup developing kinetic storage technology for grid applications. Early-stage competitor with similar flywheel-based value proposition, but smaller scale and narrower commercial deployment than Teraloop.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/teralooporg

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles11 records

Funding overview

Funding rounds2 records

Investors2 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Teraloop