What Lumcloon Energy does

Lumcloon Energy is an Irish private project development company founded in 2008 and headquartered in Tullamore, Co. Offaly. It develops flexible power generation and energy storage infrastructure for the Irish electricity market, with the explicit purpose of supplying grid-stabilization services to EirGrid, Ireland's transmission system operator. The company's stated technology portfolio spans battery energy storage systems (BESS), synchronous condensers, gas-fired flexible generation, long-duration energy storage via CO2 Battery technology, solar PV, and solid oxide fuel cells (SOFC). Its operating and pipeline assets include the 100MW Lumcloon BESS and 100MW Shannonbridge BESS (both commissioned with technology partner Hanwha Energy in 2021), the 275MW Castlelost gas-fired FlexGen (2025), the 180MW BESS + 4,000 MVA synchronous-condenser hybrid at Shannonbridge B (opening March 2026), the 23MW/200MWh Rhode LDES CO2 Battery project with Energy Dome (2026), the Coolpowra FlexGen in planning, and the €1 billion Red Admiral 250MW data-center campus.

Revenue is generated primarily through long-tenor capacity contracts with EirGrid supplemented by DS3 System Services ancillary revenues and merchant power-market exposure. The company pursues an asset-light developer model, with 11-50 employees and technology delivery outsourced to partners such as Hanwha Energy and Energy Dome. Commercial reach is also extending into bilateral corporate offtake, most notably via the Rhode LDES contract with Google, claimed as the world's first commercial bilateral CO2 Battery agreement. Reported CAPEX intensity is high — €100 million for Shannonbridge B and €1 billion for Red Admiral DC — reflecting infrastructure-scale economics rather than software-style gross margins. The chief operating risks are EirGrid contract concentration, planning-consent volatility for new assets such as Coolpowra and Red Admiral, and on-time commissioning of the 2025-2026 pipeline.

Name

Lumcloon Energy

Legal name

Lumcloon Energy Limited

Website

https://lumcloonenergy.com

Company type

Private

Founded year

2008

Operating status

Operating

Headcount range

11–50 employees

Short description

Lumcloon Energy is an Irish private developer of grid-scale flexible power and energy storage assets — including BESS, synchronous condensers, gas-fired flexgen, and CO2 Battery LDES — contracted primarily to EirGrid and hyperscalers such as Google.

Ownership category

akta.pro rank

Product category

Energy Storage and Grid Stabilisation Services

NAICS

Electric Power Generation, Transmission and Distribution (2211), Electric Power Transmission, Control, and Distribution (22112), Electric Power Generation (22111), Solar Electric Power Generation (221114)

SIC

Electric Services (4911), Electric, Gas & Sanitary Services (4900)

akta.pro primary industry

Repowering, Augmentation & Retrofit Integration (Capacity Expansion) (EUAEAEAL)

akta.pro secondary industries

Hybrid Renewable + Storage Plant Integration (Solar+Storage, Wind+Storage) (EUAEAEAE), Ancillary Services Aggregation & Bidding Optimization (DER/VPP participation) (EUAFALAJ), Energy Storage Asset Management (BESS/PCS/EMS) (EUAEAMAE)

Keywords

• Battery energy storage
• Grid stabilization services
• Flexible power generation
• Long-duration energy storage
• Renewable energy projects

Headquarters

HQ city

Tullamore

HQ country

Ireland

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. DS3 System Services: Battery Energy Storage Systems providing System Services to the Irish power system under the DS3 System Service programme, which includes frequency response and containment services required by the System Operator to enhance transmission grid management.
2. Capacity Contracts: Long-term capacity contracts from EirGrid (10-year contracts) for energy storage projects including the 23MW/200MWh CO2 Battery project at Rhode LDES.
3. Grid Stabilization Services: Synchronous Condenser and hybrid storage systems providing grid stabilization services to improve energy security and grid resilience, supporting renewable energy integration.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels2 records

Core offering

Lumcloon Energy develops, owns and operates large-scale flexible power and energy storage infrastructure projects in Ireland. Its portfolio includes battery energy storage systems, hybridised synchronous condenser + BESS grid-stabilisation facilities, long-duration CO2 battery storage, reserve gas-fired generators, utility-scale solar PV, and integrated data centre campuses with decentralised energy resources. The company sells grid services (DS3 System Services) and 10-year capacity contracts to the Irish transmission system operator EirGrid, and supplies dedicated clean power to hyperscale data centre customers.

Product overview

Lumcloon Energy is a project development company focused on flexible power and energy storage assets. The company operates a portfolio of battery energy storage systems (Lumcloon BESS and Shannonbridge BESS at 100MW each), a hybridised grid-stabilisation system (Shannonbridge B), long-duration energy storage using CO2 battery technology (Rhode LDES), gas-fired flexible generation (Castlelost FlexGen and Coolpowra FlexGen), utility-scale solar (Derrycarney Solar), and an integrated data centre with decentralised energy resources (Red Admiral DC). These projects are designed to support grid stability, enable renewable energy integration, and provide flexible power generation for Ireland's evolving energy landscape.

Differentiator

Problem solved

Functional benefit

Products and services

• Lumcloon BESS 100MW Battery Energy Storage System located on the site of the former ESB Ferbane power station in Tullamore, Co. Offaly. Provides DS3 System Services (frequency response and containment) to the Irish transmission system operator to enhance grid stability and support renewable integration.
• Shannonbridge BESS 100MW Battery Energy Storage System on a greenfield site adjacent to the Shannonbridge 220kV transmission station. Delivers DS3 System Services to the Irish power grid and supports System Non-Synchronous Penetration (SNSP) targets.
• Shannonbridge B — Synchronous Condenser and BESS Ireland's first hybridised grid-stabilisation system combining a 4,000 MVA Synchronous Condenser with a 180MW/180MWh BESS. Capable of exporting 20MW for 9 hours to support grid stability during renewable energy integration; can supply approximately 20,000 homes for 9 hours.
• Rhode LDES Long-duration energy storage facility using Energy Dome's proprietary CO2 Battery technology at the Rhode Green Energy Park in Co. Offaly. Provides 23MW/200MWh of storage for EirGrid under a 10-year capacity contract and supports Google's first bilateral commercial contract for a CO2 battery project.
• Castlelost FlexGen 275MW reserve gas-fired flexible generation facility with Gas Insulated Switchgear, designed to operate intermittently and provide flexible capacity during peak demand periods and back up the electrical grid.
• Derrycarney Solar 105MW utility-scale solar PV project in Lumcloon, County Offaly, connecting to the national grid via the Derrycarney 110kV substation under the Commission for Regulation of Utilities' Enduring Connection Policy.
• Red Admiral DC 250MW data centre campus with a Decentralised Energy Resource (DER) that integrates Solid Oxide Fuel Cell power generation, Battery Energy Storage System and a Solar PV farm to deliver clean, dedicated power for data centre operations.

Quantifiable outcome

• Ireland's first hybridized grid-stabilization system
• +2 more outcomes

Named customers2 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Six partnerships are on record, tiered core, flagship and secondary.

• Hanwha Energy CorporationcoreStrategic or Co-development PartnerSouth Korean conglomerate Hanwha Energy Corporation has partnered with Lumcloon Energy on multiple BESS projects (Lumcloon BESS and Shannonbridge BESS). Hanwha brought experience and expertise in deployment and operation of Battery Energy Storage Systems, serving as project sponsor, EPC contractor (through Hanwha Energy Corporation Ireland), and O&M contractor. The partnership developed Ireland's initial 100MW BESS facilities which entered operation in 2021.
• Energy DomecoreStrategic or Co-development PartnerItalian CO2 battery developer Energy Dome partnered with Lumcloon Energy for the Rhode LDES project using proprietary CO2 Battery technology. This represents the first commercial bilateral project under a strategic partnership aiming to develop CO2 battery projects across Europe, North America, and Asia-Pacific. Energy Dome will develop, own, and operate the 23MW/200MWh project at Rhode Green Energy Park.
• GoogleflagshipGTM or Marketing PartnerGoogle partnered with Energy Dome for the first bilateral commercial contract for the 23MW/200MWh CO2 Battery energy storage project in County Offaly, Ireland. This represents the first commercial outcome under the Energy Dome strategic partnership. The project supports Ireland's renewable energy targets and grid stability while showcasing CO2 battery technology deployment at scale.
• VPIsecondaryImplementation/ SI/ Consulting PartnerVPI serves as Project Sponsor during the operational phase for Lumcloon and Shannonbridge BESS facilities, alongside O&M services provided by Hanwha Energy Corporation Ireland.
• Irish Energy Storage Association (IESA)secondaryOthersLumcloon Energy is a Founding Member of IESA, representing the interests of the energy storage sector on the island of Ireland. IESA shares knowledge and experience with energy storage players worldwide.
• SK ecoplantsecondaryTechnology or IntegrationSK ecoplant from South Korea supplies fuel cells for the Red Admiral project's Decentralised Energy Resource (DER), which incorporates Solid Oxide Fuel Cell Power Systems, BESS, and Solar PV farm.

Scale indicators9 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Highview Power: UK-based long-duration energy storage developer using cryogenic liquid air technology, with commercial-scale projects in development. Direct comparable to Lumcloon's Rhode LDES ambition in providing long-duration storage to grid operators to support renewable integration.
• Key Capture Energy: US-based developer of utility-scale battery energy storage projects focused on ancillary services and capacity market revenue. Comparable in business model — BESS-only developer monetising grid services through long-term contracts with system operators.
• Energy Vault: Developer of long-duration energy storage technologies with utility-scale project deployments. Comparable to Lumcloon's Rhode LDES / CO2 battery initiative and broader grid-stabilisation focus, though Energy Vault's technology stack (gravity, kinetic) differs from Energy Dome's CO2 approach.
• Hanwha Energy: South Korean conglomerate that has been Lumcloon's anchor partner, EPC contractor, and O&M provider on BESS projects. Functions as both a strategic partner and a peer in the BESS IPP space, with comparable involvement in utility-scale battery storage.
• VPI (Vitol Power International): Project sponsor during the operational phase of Lumcloon's BESS assets. Comparable as a trading and asset optimisation partner across European power markets, with overlapping exposure to System Services trading and asset management.

Regional players

• Boralex: Canadian/European renewable energy IPP with operational wind, solar, and storage projects. Comparable as an independent power producer developing utility-scale projects in European markets with a focus on grid flexibility assets.

Broad incumbents

• Statkraft: Europe's largest renewable energy generator, active in Ireland with wind and flexible generation assets. Comparable as a project developer with grid-stabilisation expertise and a portfolio approach to renewable + storage integration.
• EDF Renewables: Global renewable developer with utility-scale storage and flexible generation projects across Europe. Comparable through its Pivot Power subsidiary developing BESS hubs and grid-scale battery storage in the UK / Ireland region.
• Fluence Energy: Global BESS integrator and IPP that delivers grid-scale battery storage projects similar to Lumcloon's Lumcloon and Shannonbridge BESS assets. Comparable in providing System Services and frequency response, though operating at much larger global scale and as a public company.
• ESB (Electricity Supply Board): Ireland's state-owned vertically integrated utility and the historical owner of generation assets at sites Lumcloon is redeveloping (Shannonbridge, Ferbane). Comparable as an incumbent Irish generation and grid services provider with overlapping interest in flexibility and storage.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/lumcloon-energy

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

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 Lumcloon Energy