London Array
London Array Limited owns and operates the 630MW London Array offshore wind farm in the Outer Thames Estuary, generating enough renewable electricity to power approximately 584,000 UK homes via sale to National Grid. The consortium is held by RWE, La Caisse, Greencoat UK Wind, and Masdar.
- Company typePrivate
- Founded2013
- HeadquartersRamsgate, United Kingdom
- Headcount11–50
- GTM typeB2B
- OfferingServices
What London Array does
London Array Limited is a private UK consortium that owns and operates the 630MW London Array offshore wind farm, located 20km off the north Kent coast in the Outer Thames Estuary. At inauguration in July 2013, it was the world's largest offshore wind farm; the asset comprises 175 Siemens 3.6MW turbines spread across 100km², two 1,250-tonne offshore substations located 6.5km apart, nearly 450km of subsea cabling (array and export), and an onshore substation at Cleve Hill, north Kent. The 175 turbines step generation up to 33kV, offshore substations transform to 150kV, and four export cables deliver power to the onshore substation where voltage is stepped up to 400kV for injection into the National Grid transmission network. SVC pods at Cleve Hill manage reactive power and harmonic filters clean the waveform before grid export.
The consortium is jointly owned by RWE Renewables (30%), La Caisse/CDPQ (25%), Greencoat UK Wind (25%) and Masdar (20%); RWE took over operations in 2023. Electricity is sold wholesale to National Grid under long-term arrangements, generating enough clean power for approximately 584,000 UK homes and displacing around 925,000 tonnes of CO₂ annually. Operations and maintenance are run from a dedicated O&M base at the Port of Ramsgate with around 70 technicians; revenue figures are not publicly disclosed. Transmission assets were separately divested to Blue Transmission London Array Limited in 2013 under Ofgem's OFTO regime, meaning London Array holds no transmission economics and concentrates entirely on generation revenue under its 50-year Crown Estate lease.
London Array firmographics
Firmographics- Name
- London Array
- Legal name
- London Array Limited
- Website
- https://londonarray.com
- Company type
- Private
- Founded year
- 2013
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- London Array Limited owns and operates the 630MW London Array offshore wind farm in the Outer Thames Estuary, generating enough renewable electricity to power approximately 584,000 UK homes via sale to National Grid. The consortium is held by RWE, La Caisse, Greencoat UK Wind, and Masdar.
- Ownership category
- akta.pro rank
London Array industry classification
Industry- Product category
- Offshore Wind Power Generation
- NAICS
- Wind Electric Power Generation (221115)
- SIC
- Motors & Generators (3621)
- akta.pro primary industry
- Wind Farm Ownership & Operations (IPP/Utility-Owned Asset Operations) (EUACAFAF)
- akta.pro secondary industries
- Offshore Wind Power Generation (Fixed-Bottom) (EUACAFAB), Wind Operations, Maintenance & Asset Management (Scheduled/Unscheduled) (EUAMACAH), Wind Grid Interconnection & Power Systems (Transformers, Reactive Power, SCADA) (EUAMACAK)
Keywords
Where London Array is headquartered
LocationHeadquarters
- HQ city
- Ramsgate
- HQ country
- United Kingdom
- HQ region
- Europe
Offices3 records
Markets served
London Array business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Infrastructure, Operations, Personnel, Technology or R&D, Supply Chain
Revenue model
- Electricity Generation and Sale: London Array generates electricity from its 630MW offshore wind farm and sells the power to National Grid through the UK's electricity transmission network. The electricity is exported at 400kV to the national grid distribution network, powering approximately 584,000 UK homes. The company participates in the UK capacity market and receives revenue from electricity generation and capacity payments.
Go-to-market motion1 record
Distribution channels1 record
Marketing channels6 records
London Array product offering
Product offeringCore offering
London Array owns and operates a 630MW offshore wind farm located 20km off the north Kent coast, consisting of 175 Siemens 3.6MW wind turbines across 100km2. The wind farm generates clean renewable electricity that is transmitted via offshore and onshore substations and nearly 450km of cabling to the National Grid transmission network at 400kV. Operations and maintenance are delivered 24/7 from a dedicated O&M facility at Ramsgate Harbour by a team of approximately 70 technicians.
Product overview
London Array operates as a single, unified offshore wind energy generation facility. The core product is the London Array Offshore Wind Farm, which consists of 175 Siemens wind turbines, two offshore substations, nearly 450km of offshore cabling, and one onshore substation at Cleve Hill. The wind farm generates renewable electricity that is transmitted via the National Grid to homes and businesses. London Array also provides operations and maintenance services for the wind farm from its base at Port of Ramsgate.
Differentiator
Problem solved
Functional benefit
Products and services
- London Array Offshore Wind Farm (630MW generation facility) A 630MW offshore wind farm located 20km off the north Kent coast in the Outer Thames Estuary, comprising 175 Siemens 3.6MW wind turbines, two offshore substations, nearly 450km of offshore cabling, and one onshore substation at Cleve Hill. Generates clean renewable electricity exported to National Grid at 400kV, powering approximately 584,000 UK homes and displacing around 925,000 tonnes of CO2 per year.
- Operations and Maintenance Services for Offshore Wind Farm and Substation Assets Round-the-clock operations and maintenance service delivered from a dedicated O&M facility at the Port of Ramsgate, covering the 175-turbine offshore wind farm (20km offshore) and contracted maintenance at the OFTO-owned onshore and offshore substations and cabling. Approximately 70 technicians maintain the wind farm and are transported offshore via crew transfer vessels from Ramsgate.
Quantifiable outcome
- 630MW clean electricity generation capacity
- +4 more outcomes
Companies that use London Array
Customer profileNamed customers3 records
Segments3 records
Ideal customer profiles3 records
London Array technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
London Array partnerships and signals
Strategic signalPartnerships
Nine partnerships are on record, tiered minor and core.
- Zoological Society of London (ZSL)minorAnnual collaboration for seal surveys on Kentish Knock and Long Sands sandbanks within the wind farm area. ZSL has been undertaking harbour and grey seal population surveys in the River Thames since 2013. 2024 survey found nearly 600 harbour seals and 3,000 grey seals in the Thames Estuary.
- Kent Community FoundationcoreSince 2024, Kent Community Foundation manages applications and distributes the majority of London Array's Community Fund (£40,000 annually) on behalf of the wind farm. A panel including staff from both organisations assesses projects and awards grants to local charities in Thanet.
- Kent County CouncilminorPartnership for university bursary scheme launched in 2010 to help local students pursue higher education in science, engineering or sustainable development fields.
- Blue Transmission London Array LimitedcoreConsortium that owns London Array's transmission assets (onshore and offshore substations and associated cables), purchased in September 2013 in accordance with Ofgem's Offshore Transmission Owner (OFTO) regime. London Array provides operations and maintenance services at the substation under contract.
- Siemens Wind PowercoreManufactured the 175 wind turbines (3.6MW capacity each) for the project. Turbines were shipped from Esbjerg, Denmark. Siemens also supplied electrical equipment for the offshore substations.
- JDR Cable SystemscoreManufactured the array cables (over 200km) linking turbines to each other and to the offshore substations. Cables manufactured in Hartlepool, England.
- NexanscoreSpecialist manufacturer of the four high voltage export cables weighing over 4,500 tonnes each, taking electricity from offshore substations to the onshore substation at Cleve Hill.
- Future Energy (Joint Venture: Fabricom, Lemants, Geosea)coreJoint venture that designed, built and installed the two offshore substations. Electrical systems supplied and installed by Siemens Transmission and Distribution Limited.
- National GridcoreNational Grid owns and operates the 400kV transmission network connection point at Cleve Hill. The National Grid substation is where the wind farm connects to the onshore transmission system via two 400kV circuit breakers.
Scale indicators9 records
Recent moves7 records
Expansion highlights3 records
London Array competitors and assessment
Company assessmentDirect peers
- Hornsea Wind Farm (Hornsea 1 / 2 / 3) — Ørsted: Hornsea is a series of large-scale UK offshore wind farms in the North Sea developed and operated by Ørsted, with capacities materially above London Array's 630MW. It is the most direct UK offshore wind peer in terms of scale, technology class, and offtake to National Grid via long-distance subsea transmission.
- East Anglia ONE — ScottishPower Renewables (Iberdrola): East Anglia ONE is a 714MW UK offshore wind farm off the Suffolk coast developed by ScottishPower Renewables. It is similar in scale, UK location, and National Grid offtake arrangement, and represents a directly comparable operating UK offshore wind asset.
- Beatrice Offshore Wind Farm — SSE / Equinor JV: Beatrice is a 588MW UK offshore wind farm in the Moray Firth operated by SSE Renewables with Equinor. Comparable in commissioning vintage, Siemens turbine technology, and UK consortium ownership structure, with power exported to the GB national grid.
- Sheringham Shoal Offshore Wind Farm — Equinor / Statkraft: Sheringham Shoal is a 315MW UK offshore wind farm off the Norfolk coast operated by Equinor with Statkraft. It is comparable to London Array in commissioning vintage, Siemens turbine platform, and UK regulatory framework, making it a relevant UK offshore operating peer.
- Race Bank Offshore Wind Farm — Ørsted: Race Bank is a 573MW UK offshore wind farm off the Norfolk/North Lincolnshire coast operated by Ørsted. Like London Array, it sells power to National Grid via a dedicated onshore substation and uses similar subsea cabling and offshore substation architecture.
- Rampion Offshore Wind Farm — RWE: Rampion is a 400MW+ UK offshore wind farm off the Sussex coast operated by RWE. London Array's General Manager James Vause was previously Production Manager at Rampion, and both assets share RWE-led operations and similar UK regulatory and offtake frameworks.
- Greater Gabbard Offshore Wind Farm — SSE / Equinor JV: Greater Gabbard is a 504MW UK offshore wind farm off the Suffolk coast, also one of the world's largest when built. It sells power to National Grid via a similar high-voltage onshore substation model, and is structurally comparable to London Array in scale, vintage, and offtake.
- Walney Extension Offshore Wind Farm — Ørsted: Walney Extension was, like London Array, one of the world's largest offshore wind farms when commissioned, located off the UK coast and operated by Ørsted. Comparable in scale, Siemens turbine technology, and National Grid offtake structure, making it a closely aligned operational peer.
- Triton Knoll Offshore Wind Farm — RWE / J-Power / Kansai: Triton Knoll is an 857MW UK offshore wind farm in which RWE is the operator and a co-shareholder; RWE is also the operator of London Array. The shared operator, similar consortium structure, and UK National Grid offtake make it a closely comparable asset peer.
Regional players
- Thanet Offshore Wind Farm — Vattenfall: Thanet is a 300MW UK offshore wind farm also located in the Outer Thames Estuary off the north Kent coast and originally developed by Vattenfall. Its proximity to London Array (same sea area) makes it a relevant geographic peer for subsea cable corridors, O&M synergies, and local stakeholder dynamics.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks6 records
Key highlights7 records
Customer concentration
London Array social profiles
Digital presenceLondon Array compliance and trust
Trust signalCompliance1 record
London Array financial estimates
Financial estimateRevenue estimate
Valuation estimate
London Array leadership team
Management profileNumber of profiles
Profiles9 records
London Array funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
London Array 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 London Array
What does London Array do?
London Array owns and operates a 630MW offshore wind farm located 20km off the north Kent coast, consisting of 175 Siemens 3.6MW wind turbines across 100km2. The wind farm generates clean renewable electricity that is transmitted via offshore and onshore substations and nearly 450km of cabling to the National Grid transmission network at 400kV. Operations and maintenance are delivered 24/7 from a dedicated O&M facility at Ramsgate Harbour by a team of approximately 70 technicians.
Is London Array a public or private company?
London Array is a private company. It is classified as corporate owned and is currently operating.
When was London Array founded?
London Array was founded in 2013. It employs 11 to 50 people.
Where is London Array based?
London Array is headquartered in Ramsgate, United Kingdom, in the Europe region.
How does London Array make money?
One revenue line is on record: electricity Generation and Sale.
Who are London Array's main competitors?
Direct peers on record are Hornsea Wind Farm (Hornsea 1 / 2 / 3) — Ørsted, East Anglia ONE — ScottishPower Renewables (Iberdrola), Beatrice Offshore Wind Farm — SSE / Equinor JV, Sheringham Shoal Offshore Wind Farm — Equinor / Statkraft, Race Bank Offshore Wind Farm — Ørsted, Rampion Offshore Wind Farm — RWE, Greater Gabbard Offshore Wind Farm — SSE / Equinor JV, Walney Extension Offshore Wind Farm — Ørsted and Triton Knoll Offshore Wind Farm — RWE / J-Power / Kansai. Thanet Offshore Wind Farm — Vattenfall is listed as a regional player.
Does London Array have an API?
No public API is recorded for London Array.
What industry is London Array in?
London Array's product category is Offshore Wind Power Generation. Its primary akta.pro industry code is EUACAFAF, Wind Farm Ownership & Operations (IPP/Utility-Owned Asset Operations), with a secondary code of EUACAFAB, Offshore Wind Power Generation (Fixed-Bottom). Its NAICS code is 221115 and its SIC code is 3621.