Les Éoliennes en Mer Services
Les Éoliennes en Mer Services is the shared-services entity operating two French offshore wind farms — EMYN (61 turbines, 500 MW, Vendée, operational since June 2026) and EMDT (62 turbines, 500 MW, Normandy, first grid injection July 2026) — selling all generated electricity under 25-year concessions to national grid operator RTE via fixed-price power purchase agreements.
- Company typePrivate
- Founded2020
- HeadquartersNantes, France
- Headcount101–250
- GTM typeB2B
- OfferingServices
What Les Éoliennes en Mer Services does
Les Éoliennes en Mer Services (LEMS) is a French private company (SAS) that serves as the shared-services operating entity for two utility-scale offshore wind farm concessions located off the French Atlantic coast. Its two core operating subsidiaries are Éoliennes en Mer Yeu-Noirmoutier (EMYN), an operational 61-turbine / 500 MW park off the Vendée coast inaugurated on June 12, 2026 with annual production of approximately 1,900 GWh, and Éoliennes en Mer Dieppe Le Tréport (EMDT), a 62-turbine / 500 MW park under construction off the Normandy coast with first grid injection on July 17, 2026. Combined, the two parks are intended to power the equivalent of ~1.65 million people and avoid roughly 135,726 tonnes of CO2-equivalent emissions per year compared to the French electricity mix average.
Technically, LEMS's product is large-scale offshore wind electricity generation using ~8 MW turbines with ~212-meter hub heights installed on jacket foundations (steel lattice subsea structures), supported by offshore electrical substations that collect power from all turbines and step up voltage for transmission to shore via submarine cables. The business model is a regulated utility concession structure: the French state awarded 25-year operating concessions (2026-2050 for EMYN, 2026-2051 for EMDT) via competitive tender in 2014, and the parks sell all electricity to the national grid operator RTE under long-term power purchase agreements priced at €45/MWh (the most recent comparable French offshore wind tender). Capital is sourced from a multi-sponsor consortium led by Ocean Winds (60.25%, itself a 50/50 JV between ENGIE and EDP Renewables), with Sumitomo Corporation (29.5%), La Banque des Territoires (9.75%), Vendée Energie (0.5%), and Allianz as minority participants. The company employs 181 staff across registered offices in Nantes, Dieppe, and La Barre-de-Monts.
Les Éoliennes en Mer Services firmographics
Firmographics- Name
- Les Éoliennes en Mer Services
- Legal name
- Les Éoliennes en Mer Services (LEMS)
- Website
- https://eoliennes-mer.fr
- Company type
- Private
- Founded year
- 2020
- Operating status
- Operating
- Headcount range
- 101–250 employees
- Short description
- Les Éoliennes en Mer Services is the shared-services entity operating two French offshore wind farms — EMYN (61 turbines, 500 MW, Vendée, operational since June 2026) and EMDT (62 turbines, 500 MW, Normandy, first grid injection July 2026) — selling all generated electricity under 25-year concessions to national grid operator RTE via fixed-price power purchase agreements.
- Ownership category
- akta.pro rank
Les Éoliennes en Mer Services industry classification
Industry- Product category
- Offshore Wind Energy Generation
- NAICS
- Wind Electric Power Generation (221115)
- SIC
- Electric Services (4911)
- 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), Offshore Wind Project Development & Leasing (EUAMACAB)
Keywords
Where Les Éoliennes en Mer Services is headquartered
LocationHeadquarters
- HQ city
- Nantes
- HQ country
- France
- HQ region
- Europe
Offices3 records
Markets served
Les Éoliennes en Mer Services business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Infrastructure, Operations, Personnel, Technology or R&D, Marketing or Sales
Revenue model
- Electricity Generation and Sales: The wind farms generate electricity from offshore wind turbines and sell power to the French national electricity grid. Revenue comes from power purchase agreements (PPAs) with grid operators under long-term government concessions (25 years for EMYN: 2026-2050, and for EMDT: 2026-2051). The EMYN park produces approximately 1,900 GWh annually, equivalent to the consumption of approximately 800,000 people (population of Vendée).
- Government Concession Revenue: Operating under 25-year concessions granted by the French state through competitive tender processes. The consortium won the tender in June 2014 for EMYN and entered construction in January 2024 for EMDT. Revenue is generated throughout the concession period from electricity sales.
Go-to-market motion1 record
Distribution channels1 record
Marketing channels7 records
Les Éoliennes en Mer Services product offering
Product offeringCore offering
Les Éoliennes en Mer Services develops, constructs, and operates two utility-scale offshore wind farms off the French coast (EMYN and EMDT), each with 500 MW capacity. The company generates renewable electricity from approximately 8 MW offshore wind turbines installed on jacket foundations and sells all output to the French national transmission grid (RTE) under 25-year government concessions through power purchase agreements.
Product overview
Les Éoliennes en Mer Services operates two offshore wind farm projects in France: the Parc Éolien en Mer des Îles d'Yeu et de Noirmoutier (EMYN) in Vendée with 61 turbines generating 496-500 MW, and the Parc Éolien en Mer de Dieppe Le Tréport (EMDT) in Normandy with 62 turbines generating 500 MW. EMYN has completed construction and is in commercial operation since 2026, while EMDT is still under construction with turbine installation ongoing. Both projects are joint ventures primarily led by Ocean Winds (a 50-50 joint venture between ENGIE and EDP Renewables), with participation from Sumitomo Corporation and La Banque des Territoires.
Differentiator
Problem solved
Functional benefit
Brands
- GIS EMYN: Groupement d'Intérêt Scientifique (Scientific Interest Group) associated with the Yeu-Noirmoutier offshore wind farm project.
Products and services
- Parc Éolien en Mer des Îles d'Yeu et de Noirmoutier (EMYN) Offshore wind farm located 11.7 km from Île d'Yeu and 16.5 km from Noirmoutier island off the Vendée coast, consisting of 61 wind turbines with a total installed capacity of approximately 500 MW. Produces roughly 1,900 GWh annually, equivalent to the consumption of approximately 800,000 people (population of Vendée). All electricity is sold to the French national grid (RTE) under a 25-year concession (2026-2050).
- Parc Éolien en Mer de Dieppe Le Tréport (EMDT) Offshore wind farm located off the Normandy coast near Dieppe and Le Tréport, consisting of 62 wind turbines with a total installed capacity of 500 MW. Powers the equivalent of approximately 850,000 people's electricity consumption. Operating under a 25-year concession (2026-2051). First turbines were installed in June 2026 with electricity first injected onto the grid in July 2026.
Quantifiable outcome
- Powers 800,000 people equivalent (EMYN)
- +6 more outcomes
Companies that use Les Éoliennes en Mer Services
Customer profileNamed customers1 record
Segments3 records
Ideal customer profiles1 record
Les Éoliennes en Mer Services technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
Les Éoliennes en Mer Services partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- GIS EMYN (Groupement d'Intérêt Scientifique)minorScientific Interest Group established for the EMYN project, bringing together stakeholders for environmental research and monitoring collaboration.
Scale indicators14 records
Recent moves6 records
Expansion highlights5 records
Les Éoliennes en Mer Services competitors and assessment
Company assessmentDirect peers
- TotalEnergies: French integrated energy major with a growing offshore wind portfolio (e.g., EolMed floating pilot, partnerships on French tenders). Comparable as a competing developer-operator in French and European offshore wind markets.
- Equinor: Norwegian state energy company developing Hywind (world's first floating offshore wind) and fixed-bottom projects (Dogger Bank, Empire Wind). Comparable as a major offshore wind developer-operator with both traditional and floating expertise.
- Parkwind: Belgian offshore wind developer-operator (Northwester 2, Nobelwind, and Arcadis Ost). Similar mid-sized player focused on European North Sea offshore wind under government concessions; now part of JERA. Closely comparable by scale and project profile.
- RWE Renewables: German utility with a sizable offshore wind portfolio (e.g., Triton Knoll, Kaskasi, Sofia). Directly comparable as a developer-operator of large-scale European offshore wind farms under government concession frameworks.
- Vattenfall: Swedish state-owned utility operating multiple offshore wind farms (Kriegers Flak, Aberdeen Bay, Hollandse Kust). Comparable as a European utility-scale offshore wind asset operator under long-term concessions.
- Ørsted: Global leader in offshore wind development and operation (e.g., Hornsea, Greater Changhua), with both fixed-bottom and floating technology. Directly comparable as a long-term asset owner-operator of utility-scale offshore wind parks under government concessions.
- EDF Renewables: French state-owned utility's renewables arm and a direct French offshore wind competitor, having won multiple French AO tenders (including Calvados, Fécamp, Saint-Nazaire). Closest domestic comparable to LEMS in terms of asset type, geography, and regulatory framework.
- EnBW: German utility operating He Dreiht and other offshore wind farms with a portfolio strategy similar to LEMS's utility-scale, fixed-bottom North Sea focus. Comparable asset-operator profile.
- Iberdrola (Avangrid Renewables): Spanish utility with offshore wind operations through Avangrid and joint ventures (e.g., Vineyard Wind, East Anglia). Operates utility-scale offshore wind under long-term contracts in comparable European/North Atlantic jurisdictions.
Broad incumbents
- Shell (now Shell plc renewables arm): Integrated energy major with offshore wind stakes (e.g., Mayflower Wind, joint ventures). Comparable as a participant in French offshore wind tenders (e.g., AO5 consortium partner) and large-scale offshore wind investor, though not exclusively focused on renewables.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks6 records
Key highlights7 records
Customer concentration
Les Éoliennes en Mer Services social profiles
Digital presenceLes Éoliennes en Mer Services financial estimates
Financial estimateRevenue estimate
Valuation estimate
Les Éoliennes en Mer Services leadership team
Management profileNumber of profiles
Profiles4 records
Les Éoliennes en Mer Services subsidiaries and ownership
Company hierarchySubsidiaries2 records
Les Éoliennes en Mer Services funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Les Éoliennes en Mer Services 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 Les Éoliennes en Mer Services
What does Les Éoliennes en Mer Services do?
Les Éoliennes en Mer Services develops, constructs, and operates two utility-scale offshore wind farms off the French coast (EMYN and EMDT), each with 500 MW capacity. The company generates renewable electricity from approximately 8 MW offshore wind turbines installed on jacket foundations and sells all output to the French national transmission grid (RTE) under 25-year government concessions through power purchase agreements.
Is Les Éoliennes en Mer Services a public or private company?
Les Éoliennes en Mer Services is a private company. It is classified as corporate owned and is currently operating.
When was Les Éoliennes en Mer Services founded?
Les Éoliennes en Mer Services was founded in 2020. It employs 101 to 250 people.
Where is Les Éoliennes en Mer Services based?
Les Éoliennes en Mer Services is headquartered in Nantes, France, in the Europe region.
How does Les Éoliennes en Mer Services make money?
Two revenue lines are on record. Electricity Generation and Sales are the primary driver. The others are government Concession Revenue.
Who are Les Éoliennes en Mer Services's main competitors?
Direct peers on record are TotalEnergies, Equinor, Parkwind, RWE Renewables, Vattenfall, Ørsted, EDF Renewables, EnBW and Iberdrola (Avangrid Renewables). Shell (now Shell plc renewables arm) is listed as a broad incumbent.
Does Les Éoliennes en Mer Services have an API?
No public API is recorded for Les Éoliennes en Mer Services.
What industry is Les Éoliennes en Mer Services in?
Les Éoliennes en Mer Services's product category is Offshore Wind Energy 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 4911.