ENGIE UK & Ireland

What ENGIE UK & Ireland does

ENGIE UK & Ireland is the UK and Ireland subsidiary of ENGIE SA, a French-listed global energy group, focused on three core activities: low-carbon energy generation, B2B energy supply, and energy infrastructure. The business operates 2.1 GW of pumped storage hydropower at Dinorwig and Ffestiniog in North Wales (through 75%-owned First Hydro Company), the UK's largest onshore gas storage facility at Stublach (via Storengy UK), four biomethane anaerobic digestion plants in South West England, and onshore solar, onshore wind, and offshore wind assets (the latter through the Ocean Winds joint venture with EDPR, with 1,832 MW operating in Scotland). Battery energy storage systems and hydrogen storage initiatives are in build-out, and the company has announced the £10.5 billion acquisition of UK Power Networks, which will add regulated electricity distribution across London, South East and East of England.

The company generates revenue through multiple streams: commodity-based supply of electricity and gas to 17,000 UK B2B customers under fixed, flex, and day-ahead pricing products; upstream and downstream Power Purchase Agreements (PPAs) for renewable project developers and corporate energy users; regulated and storage-fee revenue from gas storage and (pending) distribution; renewable generation revenue from wholesale markets; and managed services including asset optimisation, market access, and demand response via GEMS Energy Management. Pricing is quote-based and contract-driven, with product tiers (Fixed Price, Simple Flex, Daily Flex, Market Choice, Day Ahead Gas) supporting different customer risk appetites, and digital platforms (EGMA, EnergyScan, Julesmart) supporting large-customer trading.

Distribution is B2B-only with no residential supply, combining direct account management for large enterprises, a self-serve online portal for SMEs, a broker/intermediary channel, and a regional office footprint (London HQ, Leeds, Newcastle). The company employs approximately 1,300 people in the UK and reports into ENGIE SA, which generated €73.8 billion in global turnover in 2024 across 98,000 employees in 30+ countries. Recent strategic activity has been heavily weighted toward capital-intensive expansion: a landmark 15-year PPA with McDonald's UK, a 10-year biomethane agreement with PepsiCo UK, a £300 million injection into the £1 billion First Hydro refurbishment programme, and the UKPN acquisition collectively re-position ENGIE UK as a vertically integrated, regulated-plus-renewable energy transition utility rather than a pure-play B2B supplier.

Name

ENGIE UK & Ireland

Legal name

ENGIE UK Holdings Limited

Website

https://engie.co.uk

Company type

Private

Founded year

2004

Operating status

Operating

Headcount range

5,001–10,000 employees

Short description

ENGIE UK & Ireland is the UK and Irish subsidiary of French energy major ENGIE SA, supplying electricity and gas to 17,000 B2B customers and operating pumped storage hydro, gas storage, biomethane, and renewable generation assets. It is repositioning as a vertically integrated low-carbon energy transition utility, anchored by the pending £10.5 billion UK Power Networks acquisition.

Ownership category

akta.pro rank

Product category

Business Energy Supply

NAICS

Natural Gas Distribution (22121), Natural Gas Distribution (2212), Electric Power Generation (22111), Electric Power Generation, Transmission and Distribution (2211)

SIC

Natural Gas Distribution (4924), Cogeneration Services & Small Power Producers (4991), Natural Gas Transmisison & Distribution (4923)

akta.pro primary industry

Retail Supply + DER/Virtual Power Plant Bundles (Solar, Storage, DR) (EUAGABAI)

akta.pro secondary industries

Industrial Gas Infrastructure & Metering (Onsite Storage, PRS, Metering, SCADA) (EUALALAH), Gas-to-Power Project Development (IPP/CPP, Permitting, Financing) (EUALALAC), Regasification, Vaporizers & Pressure Reduction Systems (Industrial/LNG Send-out) (EUALALAF)

Keywords

• Business energy supply
• Renewable energy generation
• Energy storage services
• Power purchase agreements
• Energy management solutions

Headquarters

HQ city

London

HQ country

Canada

HQ region

North America

Offices9 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Business Energy Supply: Supply of electricity and gas to 17,000 UK business customers. Combined 20 years of experience with flexible and fixed-rate contract options. Revenue from commodity sales plus capacity charges.
2. Power Purchase Agreements: Upstream PPAs for renewable project developers and downstream PPAs for corporate and industrial energy users. Provides payment guarantees and income for electricity generators.
3. Asset Optimization and Energy Management: Services to optimize energy assets, manage portfolios, balance portfolios, and manage market risks for partners. Includes market access services connecting clients to energy markets.
4. Gas Storage Services: Storengy UK operates UK's largest onshore gas storage facility providing flexibility to the UK gas market. Revenue from storage capacity charges and throughput fees.
5. Renewable Energy Generation: Own and operate onshore and offshore wind assets, solar farms, and biomethane plants. Revenue from electricity and gas sales into wholesale markets.
6. Power Distribution: Electricity distribution infrastructure across London, South East and East of England following UK Power Networks acquisition. Regulated network revenue.
7. Demand Response and Flexibility Services: Services helping businesses benefit from energy management expertise to make the most of their assets. Includes flexibility services for grid stabilization.

Pricing tiers

Go-to-market motion3 records

Distribution channels5 records

Marketing channels8 records

Core offering

ENGIE UK & Ireland supplies electricity, gas, certified green power and RGGO-certified green gas to over 17,000 UK business customers, while also generating renewable energy through onshore wind, solar, biomethane anaerobic digestion plants and offshore wind (via the Ocean Winds joint venture). It operates the UK's largest flexible energy storage portfolio, including 2.1GW of pumped storage hydro (Dinorwig and Ffestiniog), battery energy storage systems, and the Stublach onshore gas storage facility, and provides energy management, asset optimisation, market access, demand response and power purchase agreement services. It is in the process of acquiring UK Power Networks to add regulated electricity distribution across London, the South East and East of England.

Product overview

ENGIE UK operates as a comprehensive energy transition utility offering an integrated portfolio of energy supply, management, and infrastructure services. The core offering comprises business energy supply (electricity, gas, green power, and green gas), energy management solutions (asset optimisation, market access, demand response), and flexible power purchase agreements. Renewable generation assets include solar, onshore wind, and offshore wind (via Ocean Winds joint venture), alongside biomethane production through anaerobic digestion facilities. Energy storage capabilities include the UK's largest pumped storage hydro (First Hydro Company with Dinorwig and Ffestiniog at 2.1GW) and battery energy storage systems. Infrastructure includes Storengy UK (largest onshore gas storage facility), hydrogen initiatives, and power distribution networks. Digital platforms such as EnergyScan, EGMA, Julesmart, and Business Online Account support customer management. Smart and AMR metering services complete the customer-facing offerings. The company serves 17,000 UK business customers and is the UK's largest provider of highly flexible energy storage for both electricity and gas.

Differentiator

Problem solved

Functional benefit

Brands

• First Hydro Company: Operates pumped storage hydropower stations at Dinorwig and Ffestiniog in North Wales, providing grid stability and flexibility.
• Storengy UK
• Ocean Winds
• GEMS Energy Management

Products and services

• Business Energy Supply (Electricity and Gas) Competitive electricity and gas supply to UK business customers, combining 20 years of experience with flexible and fixed-rate contract options.
• Green Power Electricity sourced from fully certified renewable sources for businesses seeking sustainable energy solutions.
• Green Gas RGGO certified green gas that is always UK sourced, supporting local communities and energy independence.
• Power Purchase Agreements (PPA) Sustainable PPA contracts tailored to business needs, providing payment guarantees and income for electricity producers.
• Corporate Purchase Agreements Bespoke and flexible solutions for corporate energy procurement needs, including Scope 3 emissions reduction.
• Gas Purchase Agreements Enables generators or businesses to earn regular income from exporting Green Gas.
• Asset Optimisation Energy management service that brings assets to market for high value creation through optimisation strategies, portfolio balancing and risk management.
• Market Access Connects customers to energy markets worldwide, providing access to trading opportunities through the EGMA platform.
• Demand Response and Flexibility Secures and optimises energy asset revenue through demand response programmes and flexibility services for grid stabilisation.
• Biomethane Production Anaerobic digestion facilities across the South West of England producing biomethane for local homes and businesses, with associated development projects and feedstock partner programmes.
• Solar Energy Solar farms and comprehensive solar energy solutions for renewable electricity generation.
• Onshore Wind Wind investments and wind energy solutions for renewable electricity generation, including landowner and joint venture partnerships.
• Offshore Wind Offshore wind generation through the Ocean Winds joint venture with EDPR, among the largest offshore wind generators in Scotland with 1832 MW of operating capacity.
• Pumped Storage Hydro UK's leading power storage and flexibility provider with 2.1GW of installed capacity through Dinorwig and Ffestiniog facilities in North Wales.
• Battery Energy Storage Systems (BESS) Battery technology investments delivering sustainable and flexible energy storage solutions for the grid.
• Natural Gas Storage (Storengy UK) UK's largest onshore gas storage facility at Stublach, providing flexibility to the UK gas market and holding enough gas to supply the UK for two days.
• Hydrogen Storage Hydrogen storage initiatives supporting the energy transition.
• Power Distribution Electricity distribution infrastructure ensuring reliable power across London, South East and East of England via UK Power Networks.

Quantifiable outcome

• Reduced fertilizer usage by at least 50% through digestate application for partnered farmers
• +3 more outcomes

Named customers13 records

Segments7 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature8 records

Partnerships

Eleven partnerships are on record, tiered core and minor.

• Ocean WindscoreStrategic or Co-development PartnerJoint venture between ENGIE and EDPR specializing in offshore wind power. Ocean Winds is one of the largest offshore wind generators in Scotland with 1832 MW of operating capacity. The partnership aims to become a global leader in offshore wind power.
• First Hydro CompanycoreStrategic or Co-development PartnerENGIE owns 75% of First Hydro Company which operates Dinorwig and Ffestiniog pumped storage hydropower plants in North Wales. Part of £1 billion refurbishment programme for UK energy storage capabilities.
• Storengy UKcoreStrategic or Co-development PartnerStorengy UK operates the fastest and largest onshore underground natural gas storage in the UK. Provides flexibility to the UK gas market and supports energy security.
• UK Power NetworkscoreStrategic or Co-development PartnerENGIE announced acquisition of 100% of UK Power Networks for equity value of £10.5 billion. UKPN is the best-in-class electricity distributor in the UK, serving London, South East and East of England. Major milestone in ENGIE's energy transition utility ambition.
• Point and Sandwick TrustminorStrategic or Co-development PartnerCharitable organization operating UK's biggest community windfarm (Beinn Ghrideag) on Isle of Lewis. PPA with ENGIE for all generated electricity (30GWh annually). ENGIE provides market knowledge, regulatory advice, and optimization recommendations.
• McDonald's UKcoreGTM or Marketing Partner15-year Corporate PPA through which McDonald's procures 100% of electricity from Douglas West Extension Wind Farm. Innovative supply arrangement enables McDonald's to share electricity with key suppliers for Scope 3 emissions reduction.
• PepsiCo UKcoreGTM or Marketing PartnerLandmark 10-year biomethane purchase agreement - first of its kind for UK food and drink industry and first for PepsiCo across EMEA. ENGIE to build new anaerobic digestion plant and expand biomethane portfolio.
• Whyte & MackayminorGTM or Marketing PartnerRenewable power and supply agreement linking solar and hydro generation with 24/7 reporting for whisky distilling operations on Isle of Jura. Delivers sustainable energy through locally sourced power.
• Yorkshire Rewilding NetworkminorGTM or Marketing PartnerPartnership for habitat mapping, student-led activity planning, and on-the-ground improvements to enhance biodiversity. Aligns with ENGIE Supply's youth and nature themes.
• ENGIE ImpactminorStrategic or Co-development PartnerENGIE Impact accelerates decarbonization by partnering with organizations to take corporate ambitions from strategy to reality.
• Foundation ScotlandminorChannel Partner/ Reseller/ DistributorManages community benefit fund for Douglas West Extension Wind Farm, providing financial resources for community-led investment strategy in local villages.

Scale indicators15 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Shell Energy (Shell plc): Shell Energy operates a large UK B2B energy supply business (electricity and gas) alongside upstream and trading capabilities within Shell plc. It directly competes with ENGIE UK in enterprise energy supply and increasingly in renewable PPA origination.
• National Grid: National Grid is the UK's electricity and gas transmission system operator plus owner of electricity distribution networks (NGED, formerly Western Power Distribution). Following ENGIE's UKPN acquisition, National Grid is the closest incumbents-level comparability on regulated electricity distribution in the UK.

Direct peers

• Centrica plc (British Gas): Centrica owns British Gas and is a major UK B2B and residential energy supplier, plus operates a flexible generation portfolio (including Spirit Energy and Centrica Business Solutions). It is the closest direct peer in the UK B2B energy supply market and overlaps with ENGIE UK's energy management, demand response, and gas storage/flexibility businesses.
• Drax Group: Drax is the UK's largest renewable power generator (biomass conversion at Drax Power Station) plus B2B supply via Haven Power and Opus Energy. The combination of large-scale renewable generation, biomass expertise and B2B supply directly overlaps with ENGIE UK's biomethane, renewable generation and B2B supply portfolio.
• RWE Renewables UK: RWE is one of the UK's largest offshore wind developers and operators (Sofia, Triton Knoll, Dogger Bank stakes), plus has flexible generation and trading activities. It closely mirrors ENGIE UK's Ocean Winds JV exposure in offshore wind, and overlaps in flexibility and B2B supply in the UK.
• ScottishPower (Iberdrola): ScottishPower, the UK arm of Iberdrola, operates renewable generation (wind), regulated electricity distribution in Scotland and North West England, and B2B supply. It is the closest analogue to ENGIE UK's combined renewable generation + distribution (UKPN) + supply strategy.
• EDF Energy (UK): EDF Energy operates nuclear, renewable, and flexible thermal generation in the UK plus a major B2B and residential supply business. Like ENGIE UK, it combines low-carbon generation, business supply and demand-side services, making it a closely comparable integrated low-carbon energy platform for UK customers.
• SSE plc: SSE is one of the UK's largest integrated energy groups, combining renewable generation (onshore/offshore wind, hydro), flexible thermal and pumped hydro storage, electricity networks (SSEN distribution), and B2B energy supply. It directly overlaps with ENGIE UK's renewable generation, BESS and hydro portfolio, regulated distribution interests (SSEN) following recent divestitures, and business energy supply activities.

Regional players

• Vattenfall UK: Vattenfall (Swedish state-owned) operates renewable generation (offshore wind, onshore wind) and is active in UK heat networks and energy supply. While more UK-niche, it overlaps with ENGIE UK on renewable generation, storage and B2B energy supply activities.

Emerging players

• Octopus Energy: Octopus is a fast-growing UK (and expanding international) renewable-focused energy supplier with a strong B2B arm, proprietary Kraken platform, and ambition in generation, EV and heat. It competes with ENGIE UK in business supply and increasingly in flexibility / virtual power plant aggregation.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks7 records

Key highlights7 records

Customer concentration

• Xx.com/engie_uk
• YouTubeyoutube.com/channel/UCuQHD9MgnRILjwdQaWZrBxA
• Facebookfacebook.com/EngieFR/?brand_redir=539784956185869
• LinkedInlinkedin.com/company/engie-uk
• Instagraminstagram.com/engie

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles14 records

Subsidiaries5 records

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 ENGIE UK & Ireland