Energy cells
Energy Cells is a Lithuania-based state-owned subsidiary of EPSO-G operating a 200 MW / 200 MWh four-park battery energy storage system, providing government-mandated instantaneous isolated-mode electricity reserve services to transmission system operator Litgrid under a VERT-regulated tariff.
- Company typePrivate
- Founded2021
- HeadquartersVilnius, Lithuania
- Headcount11–50
- GTM typeB2B
- OfferingServices
What Energy cells does
Energy Cells (UAB Energy cells) is a Lithuanian state-owned utility company established in January 2021 as a 100% subsidiary of EPSO-G, the country's state-owned energy transmission and exchange group whose sole shareholder is the Ministry of Energy. Headquartered at Ozo g. 12A-1, Vilnius, the company operates a 200 MW / 200 MWh Battery Energy Storage System (BESS) consisting of four geographically distributed 50 MW / 50 MWh lithium-ion battery parks installed at transformer substations in Vilnius, Šiauliai, Alytus, and Utena. All four parks are monitored and managed 24/7 from a central control centre in Vilnius. The system was designed, installed, and is maintained under a 15-year warranty by a Siemens Energy and Fluence consortium, with EUR 87.6 million of the EUR 109 million project cost funded by the EU NextGenerationEU Recovery and Resilience Facility.
The company's core service is the instantaneous isolated-mode electricity reserve ("Izoliuoto darbo rezervo paslauga") provided exclusively to Lithuania's transmission system operator, Litgrid, under a regulated tariff approved by the National Energy Regulatory Council (VERT). The battery system can inject or withdraw power within one second of a grid frequency event — roughly 900x faster than the 15-minute response time of conventional power plants in the IPS/UPS system — making it critical for grid frequency regulation, particularly during Lithuania's February 2025 synchronization with Continental European Networks and subsequent disconnection from the BRELL ring. Energy cells is government-mandated as the sole provider of this reserve in Lithuania, and pricing is set by VERT under a multi-year regulated framework. Beyond the regulated reserve service, the company markets two ancillary commercial offerings: technical consulting services for BESS projects in Lithuania and Europe, and 24/7 remote monitoring and operational management of third-party BESS parks, both drawing on its operational experience since Q4 2023.
The business model is a regulated utility-plus-niche-services hybrid. The regulated core produces stable, recurring revenue under a long-duration contract with a single off-taker (Litgrid), while the consulting and monitoring lines offer modest, skill-based diversification. The go-to-market is non-commercial by design for the core service (direct, government-mandated provisioning to the TSO) and enterprise/professional-services oriented for the ancillary lines, with no public retail or SMB channel. Headcount sits at 11-50 employees, consistent with a lean operator of large-scale physical infrastructure rather than a software or services scale-up.
Energy cells firmographics
Firmographics- Name
- Energy cells
- Legal name
- UAB Energy cells
- Website
- https://energy-cells.eu
- Company type
- Private
- Founded year
- 2021
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Energy Cells is a Lithuania-based state-owned subsidiary of EPSO-G operating a 200 MW / 200 MWh four-park battery energy storage system, providing government-mandated instantaneous isolated-mode electricity reserve services to transmission system operator Litgrid under a VERT-regulated tariff.
- Ownership category
- akta.pro rank
Energy cells industry classification
Industry- Product category
- Energy Storage Services / Grid Frequency Regulation
- NAICS
- Electric Power Generation, Transmission and Distribution (2211), Electric Power Transmission, Control, and Distribution (22112)
- SIC
- Electric Services (4911)
- akta.pro primary industry
- Battery Management Systems (BMS) & Safety Controls (EUAFAAAD)
- akta.pro secondary industry
- Battery Modules & Packs (Industrial/Commercial pack assembly) (IMAGAHAB)
Keywords
Where Energy cells is headquartered
LocationHeadquarters
- HQ city
- Vilnius
- HQ country
- Lithuania
- HQ region
- Europe
Offices5 records
Markets served
Energy cells business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Infrastructure, Technology or R&D, Operations, Personnel, Marketing or Sales
Revenue model
- Isolated-Mode Reserve Service (Izoliuoto darbo rezervo uzttikrinimo paslauga): Energy cells generates revenue by providing the isolated-mode electricity system reserve service to transmission system operator Litgrid. Pricing for this regulated service is approved by Lithuania's National Energy Regulatory Council (VERT). The company was appointed by the Lithuanian Government as the sole operator of this service and has been providing it at full 200 MW capacity since October 2023. Revenue is recurring under a regulated framework, with adjusted figures accounting for regulatory deviations approved by VERT.
- Technical Consulting Services for BESS Projects: Energy cells offers technical consulting services for battery energy storage system (BESS) projects in Lithuania and Europe, drawing on its practical experience in design, installation, testing, integration, operation, and remote monitoring. Services include technical solution recommendations, grid connection advisory, document review, and independent technical analysis of contractor bids.
- Continuous BESS Park Monitoring and Management Services: Provides 24/7 remote monitoring and operational management services for third-party BESS parks, including real-time monitoring using the customer's own control system, failure and incident registration per SLA, and ongoing park management.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Subscription | Multi-year contract | Regulated isolated-mode reserve service — pricing approved by VERT |
Go-to-market motion1 record
Distribution channels1 record
Marketing channels4 records
Energy cells product offering
Product offeringCore offering
Energy cells operates a 200 MW / 200 MWh Battery Energy Storage System consisting of four geographically distributed 50 MW / 50 MWh lithium-ion battery parks at transformer substations in Vilnius, Šiauliai, Alytus, and Utena, delivering instantaneous isolated-mode electricity reserve service to Lithuania's transmission system operator Litgrid. The system responds to grid frequency disturbances within 1 second and is monitored 24/7 from a central control centre in Vilnius. The company also offers BESS technical consulting services and remote monitoring/management services for third-party battery energy storage parks.
Product overview
Energy cells operates a single unified energy storage system — a 200 MW / 200 MWh Battery Energy Storage System (BEKS) consisting of four geographically distributed 50 MW / 50 MWh battery parks. The core product is the isolated mode electricity reserve service provided to transmission system operator Litgrid. Supporting this core offering are consultancy services for BESS project development and 24/7 monitoring/management services for BESS parks, both enabled by Energy cells's operational experience since October 2023. The four battery parks work as a coordinated system controlled from a Vilnius control center, capable of responding within 1 second to grid frequency deviations.
Differentiator
Problem solved
Functional benefit
Products and services
- Battery Energy Storage System (BEKS) A 200 MW / 200 MWh battery energy storage system consisting of four 50 MW / 50 MWh lithium-ion battery parks installed at transformer substations in Vilnius, Šiauliai, Alytus, and Utena. Provides instantaneous isolated-mode electricity reserve and grid frequency regulation, with all parks monitored and managed 24/7 from a central control centre in Vilnius.
- Isolated Mode Electricity Reserve Service The primary regulated service providing instantaneous isolated-mode power reserve to Lithuania's transmission system operator Litgrid under VERT-approved pricing, ensuring grid security and stability. The system responds automatically within 1 second to grid frequency disturbances, supporting Lithuania's synchronization with Continental European Networks and renewable energy integration.
- BESS Consultancy Services Technical consulting services for battery energy storage system (BESS) projects across Lithuania and Europe, including battery technology comparison, system power/capacity recommendations, grid connection support, technical specification review, and independent analysis of contractor bids. Leverages real operational experience managing the 200 MW BESS.
- Continuous BESS Park Monitoring and Management Services 24/7 remote monitoring and operational management services for third-party BESS parks, including real-time monitoring using the customer's own control system, failure and incident registration per SLA, ongoing park management, signal and alarm management, and state-of-charge (SoC) monitoring and maintenance.
Quantifiable outcome
- 200 MW / 200 MWh system operational at full capacity since Q4 2023
- +4 more outcomes
Companies that use Energy cells
Customer profileNamed customers1 record
Segments1 record
Ideal customer profiles2 records
Energy cells technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
Energy cells partnerships and signals
Strategic signalPartnerships
Four partnerships are on record, tiered core and minor.
- Siemens Energy and Fluence ConsortiumcoreThe Siemens Energy and Fluence consortium was selected through an international public tender to design, manufacture, install, and integrate the 200 MW / 200 MWh battery energy storage system. The consortium won the tender on the basis of joint activity and is providing 15-year warranty and maintenance services after the system's commissioning in Q4 2023.
- LitgridcoreLitgrid is Lithuania's electricity transmission system operator and the primary customer receiving the isolated-mode reserve service from Energy cells. Energy cells provides instantaneous electricity reserve to Litgrid under a regulated framework, with the system automatically responding to Litgrid's grid stability commands within 1 second.
- IgnitisminorIgnitis supplies green electricity to Energy cells' battery parks. This is a commercial electricity supply relationship for powering the BESS facilities.
- EnefitminorEnefit was selected as a green electricity supplier for the battery parks, providing renewable energy to power the BESS facilities.
Scale indicators7 records
Recent moves7 records
Expansion highlights5 records
Energy cells competitors and assessment
Company assessmentBroad incumbents
- NGK Insulators: Japanese manufacturer of NAS (sodium-sulfur) batteries for grid-scale energy storage. Comparable as a long-duration, large-format battery storage technology provider for utility grid applications, particularly in Japan and the Middle East.
- BYD Energy Storage: Vertically integrated Chinese manufacturer and developer of BESS solutions for utility-scale applications. Comparable as a major lithium-ion BESS provider for grid markets with significantly larger scale and global footprint.
- Rolls-Royce Power Systems (mtu): Offers the mtu EnergyPack grid-scale BESS solution for utilities and grid operators. Comparable as a major power systems provider with utility-scale energy storage offerings focused on European markets.
- Saft (TotalEnergies): French battery manufacturer specializing in industrial and grid-scale energy storage, owned by TotalEnergies. Comparable as a major industrial-scale battery and BESS provider with similar European utility customer base.
- Sungrow Power Supply: One of the world's largest inverter and energy storage system providers with a rapidly growing grid-scale BESS business. Comparable as a major utility-scale energy storage system supplier with global reach.
- Tesla Energy: Offers Megapack, a large-scale lithium-ion BESS for utility and commercial applications. Comparable as a major grid-scale BESS provider, though serving a broader portfolio spanning EVs, residential, and commercial storage globally.
- ABB: Swiss-Swedish multinational providing power infrastructure including BESS solutions, switchgear, and grid management systems. Comparable as a broader power systems incumbent with utility-scale energy storage and grid integration offerings overlapping Energy Cells' infrastructure scope.
Direct peers
- Fluence Energy: Global leader in grid-scale battery energy storage systems and services. Direct comparable as the technology vendor and operational partner behind Energy Cells' 200 MW BESS deployment, with overlapping grid-scale storage and asset management offerings.
- Wartsila Energy Storage: Provides grid-scale BESS solutions and integrated energy storage systems for utilities and grid operators worldwide. Comparable as a competing provider of utility-scale energy storage with similar technology profile and target customer segment.
Emerging players
- Stem Inc: AI-driven energy storage and grid services provider, primarily serving commercial and industrial customers with growing utility market exposure. Comparable as a BESS service provider with intelligent energy management capabilities.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks7 records
Key highlights7 records
Customer concentration
Energy cells social profiles
Digital presenceEnergy cells compliance and trust
Trust signalCompliance3 records
Energy cells financial estimates
Financial estimateRevenue estimate
Valuation estimate
Energy cells leadership team
Management profileNumber of profiles
Profiles4 records
Energy cells funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Energy cells 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 Energy cells
What does Energy cells do?
Energy cells operates a 200 MW / 200 MWh Battery Energy Storage System consisting of four geographically distributed 50 MW / 50 MWh lithium-ion battery parks at transformer substations in Vilnius, Šiauliai, Alytus, and Utena, delivering instantaneous isolated-mode electricity reserve service to Lithuania's transmission system operator Litgrid. The system responds to grid frequency disturbances within 1 second and is monitored 24/7 from a central control centre in Vilnius. The company also offers BESS technical consulting services and remote monitoring/management services for third-party battery energy storage parks.
Is Energy cells a public or private company?
Energy cells is a private company. It is classified as state government owned and is currently operating.
When was Energy cells founded?
Energy cells was founded in 2021. It employs 11 to 50 people.
Where is Energy cells based?
Energy cells is headquartered in Vilnius, Lithuania, in the Europe region.
How does Energy cells make money?
Three revenue lines are on record. Isolated-Mode Reserve Service (Izoliuoto darbo rezervo uzttikrinimo paslauga) is the primary driver. The others are technical Consulting Services for BESS Projects and continuous BESS Park Monitoring and Management Services.
Who are Energy cells's main competitors?
Broad incumbents on record are NGK Insulators, BYD Energy Storage, Rolls-Royce Power Systems (mtu), Saft (TotalEnergies), Sungrow Power Supply, Tesla Energy and ABB. Direct peers are Fluence Energy and Wartsila Energy Storage. Stem Inc is listed as an emerging player.
Does Energy cells have an API?
No public API is recorded for Energy cells.
What industry is Energy cells in?
Energy cells's product category is Energy Storage Services / Grid Frequency Regulation. Its primary akta.pro industry code is EUAFAAAD, Battery Management Systems (BMS) & Safety Controls, with a secondary code of IMAGAHAB, Battery Modules & Packs (Industrial/Commercial pack assembly). Its NAICS code is 2211 and its SIC code is 4911.