SDEY

What SDEY does

SDEY (Syndicat Départemental d'Énergies de l'Yonne), headquartered in Auxerre, France, is a public territorial energy syndicate (Établissement Public de Coopération Intercommunale — EPCI) established October 21, 2014 that owns and manages low- and medium-voltage electrical networks and oversees gas distribution networks on behalf of communes in the Yonne department of Burgundy. Following the November 2025 integration of the final commune (Cheny), effective January 1, 2026 SDEY is the sole Autorité Organisatrice de la Distribution (AOD) for public electricity distribution across all 423 communes, governing 12,305 km of electrical lines serving 333,896 inhabitants under a 30-year concession contract with Enedis (network operator) and EDF (regulated-tariff supplier) signed in 2020. Governance is exercised by a 46-member Comité Départemental organized through 8 Commissions Locales d'Énergies (CLE) covering distinct territorial sub-zones.

The organization's service portfolio spans core infrastructure (public lighting modernization with LED upgrades and remote telemetry/télégestion; telecommunications with 26 built mobile-network pylons reducing white zones; GIS-based network cartography including PCRS with orthophotography, LIDAR, and digital elevation models under a co-financing convention with RTE dated July 2025) and adjacent energy services (EV charging — 120 stations with 97.4% reliability since 2015; shared energy advisory or CEP; collective energy purchasing; solar cadastre; collective self-consumption support; CEE certificate coordination; renewable energy development including methanization). Mixed-economy subsidiary SEM Yonne Énergie participates in territorial production assets, and partnerships with FNCCR, IGN, CRAIG, ATD 89, and SE60 extend technical and strategic reach. The Label Terre d'Innovation program (launched 2021, adopted nationally by FNCCR in October 2022) functions both as commune-engagement programming and as a vehicle for exporting SDEY's innovation framework to other French AODEs.

Revenue and funding are non-commercial: SDEY does not operate on a commercial pricing model and is funded through mandatory contributions from member communes, redevances (fees for domain occupation and pylons), and contractual arrangements with concession operators. Service delivery is via direct public-service channels through the CLEs and Comité Départemental rather than sales motions. As a public entity, SDEY has no traditional equity ownership, no funding rounds, and no investor capital — governance rests with elected commune delegates, with operational leadership under President Guillaume Dumay (elected June 2026, succeeding Jean-Noël Loury). Headcount is reported in the 11–50 range. Certifications include ISO 9001 quality management; recognition includes the 2024 Grand Prix National Terre d'Innovation (FNCCR) for the commune of Monéteau.

Name

SDEY

Legal name

Syndicat Départemental d'Énergies de l'Yonne

Website

https://sdey.fr

Company type

Private

Founded year

2014

Operating status

Operating

Headcount range

11–50 employees

Short description

SDEY (Syndicat Départemental d'Énergies de l'Yonne) is a French public EPCI energy syndicate that owns and manages electricity, gas, public lighting, EV charging, and telecommunications infrastructure for all 423 communes of the Yonne department (333,896 inhabitants, 12,305 km of electrical lines) under a 30-year Enedis/EDF concession.

Ownership category

akta.pro rank

Product category

Public Energy Services / Municipal Energy Network Management

NAICS

Electric Power Generation, Transmission and Distribution (2211), Electric Power Transmission, Control, and Distribution (22112), Electric Power Distribution (221122)

SIC

Electric Services (4911), Natural Gas Transmisison & Distribution (4923), Natural Gas Distribution (4924), Electric, Gas & Sanitary Services (4900)

akta.pro industry

PRIMARYEUADABAJ

Multi-Utility Distribution Companies (Electric + Gas/Water Distribution)

Energy, Utilities & Environment/Electric Transmission & Distribution (T&D)/Distribution System Operators (DSOs) & Electric Distribution Utilities

SECONDARYEUADABAI

Electric Distribution System Owners (Wires-Only Companies)

Energy, Utilities & Environment/Electric Transmission & Distribution (T&D)/Distribution System Operators (DSOs) & Electric Distribution Utilities

SECONDARYEUADALAJ

Non-Wires Alternatives (NWA) & DER as Grid Capacity (Capacity Deferral)

Energy, Utilities & Environment/Electric Transmission & Distribution (T&D)/Distributed Energy Resource (DER) Integration & Hosting Capacity

SECONDARYEUAFAHAA

Residential DER Aggregation & VPPs (Solar+Storage, Smart Home, Community)

Energy, Utilities & Environment/Energy Storage & Grid Flexibility (Batteries, Hydrogen Storage, Demand Response)/Virtual Power Plants (VPP) & Distributed Energy Resource (DER) Aggregation

SECONDARYEUAEACAC

Distribution Substations & Switching Stations (MV) EPC

Energy, Utilities & Environment/Energy Infrastructure & Services (EPC, O&M, Field Services)/Distribution Grid EPC & Line Services (Medium/Low Voltage)

SECONDARYEUAEACAN

Network Upgrades & Capacity Additions (Reconductoring, Rebalancing, Voltage Optimization)

Energy, Utilities & Environment/Energy Infrastructure & Services (EPC, O&M, Field Services)/Distribution Grid EPC & Line Services (Medium/Low Voltage)

Keywords

• Public energy services
• Electricity distribution networks
• Municipal network management
• EV charging infrastructure
• Public lighting services

Headquarters

HQ city

Auxerre

HQ country

France

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Technology or R&D

Revenue model

1. Commune Contributions and Public Service Fees: SDEY operates as a public authority managing energy distribution concessions on behalf of communes. Revenue is generated through contributions from member municipalities, redevances (fees for domain occupation and pylons), and contractual arrangements with concession operators Enedis and EDF. The organization also manages collective energy purchasing for communes.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels8 records

Core offering

SDEY owns and manages low and medium voltage electricity networks and oversees gas networks for the 423 communes of the Yonne department in France. As the sole Authority Organizing Public Electricity Distribution (AODE) since January 2026, it provides a comprehensive suite of public energy services: public lighting development and maintenance, telecommunications infrastructure (26 mobile telephony pylons), SIG/PCRS cartography, electric vehicle charging stations, energy optimization advisory (CEP), renewable energy development, collective energy purchasing, and energy savings certificate (CEE) coordination.

Product overview

SDEY (Syndicat Départemental d'Énergies de l'Yonne) is a public energy syndicate (EPCI) managing energy infrastructure across the Yonne department. Its portfolio includes core network management services (electricity, gas, public lighting, telecommunications), geographic information systems, electric vehicle charging infrastructure, and various energy advisory services. The organization operates through its main brand identity, sub-structures like SEM Yonne Énergie, and programs including the Terre d'Innovation labeling initiative. Key service modules include IRVE charging stations, shared energy advisory (CEP), solar cadastre, collective self-consumption support, and energy purchasing groups. SDEY holds concession authority over ENEDIS/EDF networks covering the entire department from 2026.

Differentiator

Problem solved

Functional benefit

Brands

• Terre d'Innovation: A national labeling program created by SDEY to recognize and valorize communes that implement innovative solutions in energy networks, public lighting, sustainable mobility, and energy optimization.

Products and services

• Electricity Network Management (Réseaux électriques) SDEY owns and manages low and medium voltage electricity distribution networks, overseeing infrastructure construction, renovation, strengthening, and securing on behalf of its 423 member communes in the Yonne department.
• Gas Network Management (Réseaux Gaz) SDEY manages gas distribution networks on behalf of communes, including annual activity reports and concession oversight for GRDF-operated networks.
• Public Lighting (Éclairage Public) SDEY develops, renews, modernizes, and maintains public lighting installations on behalf of member municipalities, including LED upgrades and connected remote management solutions (télégestion).
• Telecommunications Networks (Réseaux Télécom) SDEY constructs telecommunications pylons (points hauts) to reduce mobile telephony white zones and enable operator equipment installation across the Yonne department, with 26 pylons built.
• SIG & Cartography Web-based Geographic Information System tool enabling secure location of underground networks and visualization of public lighting points across the Yonne department, including PCRS (Plan de Corps de Rue Simplifié) with orthophotography, LIDAR data, and digital elevation models.
• IRVE - Electric Vehicle Charging Infrastructure SDEY designs and operates an electric vehicle charging station network across the Yonne department, including 120 charging stations with 18 rapid chargers, achieving 97.4% service reliability.
• CEP - Conseil en Énergie Partagé (Shared Energy Advisory) Shared energy advisory service providing diagnostic and advisory support for municipalities on energy management decisions, audits, planning, and energy savings programs adapted to commune specifics and available budgets.
• Solar Cadastre (Cadastre Solaire) Solar mapping tool enabling communes to identify solar energy potential on their territory for renewable energy deployment.
• Collective Self-Consumption (Autoconsommation collective) Support service for communal and inter-communal collective self-consumption energy projects enabling shared local energy production and consumption.
• Renewable Energy Development (Énergies renouvelables) Innovation strategy supporting energy transition including smart city, smart grid, hydrogen, methanization, and wood sector initiatives across member communes.
• Energy Purchasing Group (Achat groupé d'énergies) Collective energy purchasing programs enabling communes to benefit from improved rates through coordinated group procurement of gas and electricity.
• CEE - Certificats d'Économies d'Énergie Energy savings certificate program coordination helping communes access energy efficiency incentives and regulatory energy savings frameworks.
• Energy Optimization (Optimisation Énergétique) Diagnostic and advisory services for municipalities to implement energy savings programs adapted to commune specifics and available budgets.
• Concession Contract with Enedis/EDF 30-year public electricity distribution concession contract covering 12,305 km of electrical lines serving 333,896 residents across 423 communes, with SDEY as sole conceding authority from January 1, 2026.
• SEM Yonne Énergie Local public energy company (Société d'Économie Mixte) created by SDEY for territorial energy projects, including methanization partnerships such as the Pont-sur-Vanne methanization unit.

Quantifiable outcome

• 97.4% reliability rate for the electric vehicle charging station network
• +2 more outcomes

Named customers3 records

Segments2 records

Ideal customer profiles1 record

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration7 records

Feature4 records

Partnerships

Nine partnerships are on record, tiered supporting and core.

• SE60 (Syndicat d'Énergies de l'Oise)supportingStrategic or Co-development Partner · 1 January 2026SDEY and SE60 united their expertise in energy and digital domains to advance energy transition initiatives, combining knowledge and resources across the Oise and Yonne departments.
• RTE (Réseau de Transport d'Électricité)coreTechnology or Integration · 3 July 2025SDEY signed a 4-year co-financing convention with RTE to improve the PCRS (Plan de Corps de Rue Simplifié) - both image and vector data - across the Yonne department. The partnership includes data sharing via WMS, SIG tools, and establishes groundwork for a future digital twin of the territory.
• EnediscoreTechnology or Integration · 19 November 2024Enedis operates as the public electricity distribution network manager under the 30-year concession contract signed in 2020 with SDEY as the conceding authority. The partnership manages 12,305 km of electrical lines serving 333,896 inhabitants across 423 communes.
• EDFcoreTechnology or Integration · 19 November 2024EDF serves as the electricity supplier at regulated tariffs (Tarifs Réglementés de Vente) under the concession framework managed by SDEY, alongside Enedis for network operations.
• ATD 89 (Agence Technique Départementale de l'Yonne)supportingStrategic or Co-development PartnerSDEY relays ATD 89's technical assistance offerings to member communes, particularly for bridge and civil engineering structure management (ouvrages d'art). The partnership supports communes in their regulatory obligations and infrastructure maintenance.
• FNCCR (Fédération Nationale des Collectivités Concédantes et Régies)supportingGTM or Marketing PartnerSDEY collaborates with FNCCR to promote the 'Terre d'Innovation' label nationally, sharing its innovation recognition framework with other energy authorities (AODE) across France.
• SEM Yonne ÉnergiecoreStrategic or Co-development PartnerSEM Yonne Énergie serves as a strategic partner for territorial energy transition projects, including participation in the methanization unit at Pont-sur-Vanne, representing historical collaborative energy infrastructure development.
• IGN (Institut National de l'Information Géographique et Forestière)supportingTechnology or IntegrationCooperation for cartography and geographic data infrastructure supporting PCRS and SIG initiatives for network mapping across the department.
• CRAIG (Centre Régional Auvergnat d'Information Géographique)supportingTechnology or IntegrationRegional cooperation for geographic information systems and cartographic data sharing to support network management and territorial planning.

Scale indicators8 records

Recent moves8 records

Expansion highlights6 records

Direct peers

• SE60 - Syndicat d'Énergies de l'Oise (Territoire d'Énergie Oise): French departmental energy syndicate in the Oise department, directly comparable to SDEY in legal form (AODE/EPCI), mission set, and rural departmental footprint. SDEY and SE60 recently signed a cross-department cooperation agreement on energy and digital expertise, confirming their peer status.
• SDE18 - Syndicat Départemental d'Énergies du Cher: Departmental energy syndicate for the Cher department, operating under the same AODE legal framework with analogous electricity, gas, public lighting, and EV charging responsibilities over a comparable rural commune base.
• SDEM - Syndicat Départemental d'Énergies du Morbihan: Morbihan departmental energy syndicate managing electricity distribution concessions, public lighting, and broadband/telecom infrastructure for its member communes — a near-identical mandate to SDEY in a similarly structured French department.
• Hérault Énergies: Public energy authority for the Hérault department managing electricity distribution, public lighting, EV charging and renewable energy programs under a comparable AODE mandate, though in a larger and more urbanized department.
• TE38 - Territoire d'Énergie Isère (formerly SEDI 38): Isère departmental energy authority providing electricity, gas, public lighting, telecom and EV services to communes — operates the same AODE framework as SDEY and serves as a recognized model for energy-transition service delivery in a large department.
• SDE35 - Syndicat Départemental d'Énergies d'Ille-et-Vilaine: Ille-et-Vilaine departmental energy syndicate with full AOD responsibilities, public lighting services, and EV charging operations; structurally and operationally a close French peer to SDEY.

Broad incumbents

• Enedis: French DSO that operates the public electricity distribution network under 30-year concession contracts with AODEs including SDEY; the operational counterpart and most direct industry participant linked to SDEY's network mandate.
• FNCCR - Fédération Nationale des Collectivités Concédantes et Régies: National federation of French AODEs and public energy authorities; SDEY is a member and partnered with FNCCR to roll the Terre d'Innovation label nationwide, making FNCCR the apex body representing SDEY's peer group.

Regional players

• SIPPEREC: Syndicat intercommunal serving the Île-de-France region with electricity, gas, public lighting, EV charging and digital infrastructure mandates for its member collectivities — a structurally similar organization but operating at a regional (Île-de-France) rather than departmental level.

Others

• SEM Yonne Énergie: Local public mixed-economy energy company partly owned and co-developed by SDEY for territorial energy projects including méthanisation; an ecosystem / subsidiary entity rather than a peer, included for completeness.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UCZzIdgbBLsxh1HLz1wikGZw
• LinkedInlinkedin.com/company/sdey

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Subsidiaries1 record

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 SDEY