IngénierY' - Agence Technique Départementale

What IngénierY' - Agence Technique Départementale does

IngénierY' (Agence Technique Départementale) is a public departmental engineering agency created in 2014 by the Conseil Départemental des Yvelines in France to provide technical assistance and project management support to rural municipalities. The agency is headquartered in Chevreuse (relocated from Rambouillet in March 2025) and is governed by a board chaired by President Patrick Stefanini. Its mandate is to address the structural gap in in-house engineering capacity that plagues small rural communes, particularly in areas such as public procurement, building renovation, heritage conservation, road infrastructure, and energy transition.

The agency's service portfolio is organized into five core poles — Juridique & Commande Publique (legal and public procurement), Bâtiment (building), Patrimoine (heritage preservation), Voirie & Réseaux Divers (roads), and Énergie (energy) — supplemented by specialized devices including the Carnets d'Entretien du Patrimoine Rural (preventive maintenance notebooks), Contrats Ruraux financing programmes, the Brigades Vertes environmental insertion scheme, the Guichet Ruralité Énergie Environnement hub, and a weekly legal assistance hotline. As of 2024, the agency has 14 staff and serves 192 communes, 6 EPCI (intercommunal structures), and 10 syndicats, with members including documented cases such as Auffargis, Tacoignières, Longnes, Rosay, and Émancé. The Carnets d'Entretien programme, described as 'unique en France', has produced 90 maintenance notebooks by end-2024, intermediating €2.27M of total project investment with €1.41M of departmental aid over 2019-2023.

IngénierY' is financed primarily through subsidies from the Conseil Départemental des Yvelines, supplemented by membership contributions from its 202 collecting communes (with amounts periodically updated by the board). Beyond direct technical assistance, the agency plays a critical financial-intermediation role, helping communes access external funding from ADEME, the Region Île-de-France, DSIL, and the Fonds Vert. Strategic partnerships with ADEME Île-de-France (2024-2026), MANERGY, the RCR78 network (Energies Solidaires, Alec 78), and the GIE Seine Yvelines Ressources position the agency as the central node coordinating departmental, regional, and national support for rural affairs in Yvelines. The agency is not a commercial enterprise and does not publicly disclose revenue; its strategic significance is measured in intermediated project value, member growth, and programme expansion rather than top-line growth.

Name

IngénierY' - Agence Technique Départementale

Legal name

Agence IngénierY'

Website

https://ingeniery.online

Company type

Private

Founded year

2014

Operating status

Operating

Headcount range

11–50 employees

Short description

IngénierY' is a public departmental engineering agency, founded in 2014 by the Conseil Départemental des Yvelines, that provides technical assistance in building, heritage, roads, energy, and public procurement to rural communes in Yvelines, France.

Ownership category

akta.pro rank

Product category

Municipal Engineering Services

NAICS

Management, Scientific, and Technical Consulting Services (5416), Public Administration (92), Architectural, Engineering, and Related Services (5413)

SIC

Services-Engineering, Accounting, Research, Management (8700)

akta.pro primary industry

Program & Project Implementation (TA Delivery) (BPADAEAA)

Keywords

• Municipal engineering services
• Public procurement support
• Rural development advisory
• Heritage conservation services
• Energy transition advisory

Headquarters

HQ city

Chevreuse

HQ country

France

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Others

Revenue model

1. Departmental Subsidies and Municipal Membership Contributions: IngénierY' is primarily financed by the Conseil Départemental des Yvelines, supplemented by membership contributions from the 202 collecting member communes. The agency also helps communes secure external funding from regional, national, and EU sources (ADEME, Region Île-de-France, DSIL, Fonds Vert, etc.) for project implementation.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

IngénierY' is a departmental technical agency that provides rural municipalities in Yvelines with engineering, legal, financial, and heritage advisory services across the full project lifecycle — from technical studies and design through procurement management, financing acquisition, and execution support. It is organised into five poles (Building, Roads, Heritage, Energy, Legal/Public Procurement) and operates specialised programmes such as the Carnets d'Entretien, Contrats Ruraux, and Brigades Vertes.

Product overview

IngénierY' — Agence Technique Départementale is a departmental engineering agency created by the Department of Yvelines to support rural municipalities. It is a single unified agency offering a broad portfolio of technical and advisory services organized into five core poles: Juridique & Commande Publique (legal and public procurement), Bâtiment (building projects), Patrimoine (heritage preservation), Voirie & Réseaux Divers (roads and infrastructure), and Énergie (energy transition). The agency supplements these with specialized devices and programs including the Carnets d'Entretien du Patrimoine Rural, Contrats Ruraux, Brigades Vertes, legal assistance hotline, medical houses support, renewable heat networks, and electric vehicle infrastructure. These offerings work together as a comprehensive municipal engineering service covering the full project lifecycle from technical studies and design through funding acquisition, procurement management, and on-site execution support.

Differentiator

Problem solved

Functional benefit

Products and services

• Carnets d'Entretien du Patrimoine Rural
• Contrats Ruraux & Contrats Ruraux Yvelines+

Quantifiable outcome

• Heritage maintenance programme: €2.27M total investment with €1.41M departmental aid across 62 communes over 2019–2023
• +4 more outcomes

Named customers10 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

15 partnerships are on record, tiered core and minor.

• Energies SolidairescoreStrategic or Co-development Partner · 23 September 2025Partnership within the Réseau Chaleur Renouvelable Yvelinois (RCR78), along with Alec 78 and IngénierY', acting as the local relay for the renewable heat scheme created by the Île-de-France Region.
• MANERGYcoreStrategic or Co-development Partner · 11 June 2024IngénierY' mandated the engineering firm MANERGY as AMO (Assistance à Maîtrise d'Ouvrage) to conduct a prefiguration study for a Contrat de Chaleur Renouvelable (CCR — Renewable Heat Contract), financed by ADEME. MANERGY supports communes in identifying renewable energy solutions for their buildings, assessing economic viability and investment needs.
• Réseau Animateurs Chaleur Renouvelable Yvelinois (RCR78)coreStrategic or Co-development Partner · 4 April 2024IngénierY' applied for AMI funding to create an animator post under the Renewable Heat Network scheme in Île-de-France. The network, formed by the association Energies Solidaires, Alec 78, and IngénierY', acts as the local relay for the EnR'Choix scheme. The animator will guide communes and businesses in designing optimal renewable thermal solutions for their buildings.
• ADEME Île-de-FrancecoreStrategic or Co-development Partner · 5 March 2024Partnership letter 2024-2026 adopted between the Conseil Départemental des Yvelines, IngénierY', and ADEME Île-de-France. The partnership aims to jointly accompany the energy transition of the Yvelines territory and develop renewable energy production projects, including thermal renewable energy. It may also extend to topics such as energy renovation of colleges and departmental heritage, active mobility for vulnerable populations, waste valorisation, circular economy, and citizen energy projects.
• Alec 78 (Agence Locale de l'Énergie et du Climat des Yvelines)coreStrategic or Co-development PartnerPartnership within the Réseau Chaleur Renouvelable Yvelinois (RCR78), along with Energies Solidaires and IngénierY', acting as the local relay for the Île-de-France Region's renewable heat scheme.
• GIE Seine Yvelines RessourcesminorStrategic or Co-development PartnerCreation of the GIE (Groupement d'Intérêt Économique) Seine Yvelines Ressources announced at the July 2023 CA/AG meeting. This economic interest group was formed to pool and develop new activities and services.
• DDT des Yvelines (Direction Départementale des Territoires)coreStrategic or Co-development PartnerThe DDT organised the 1st Forum de l'Ingénierie des Yvelines with ANCT, at which IngénierY' participated. The DDT is a key departmental partner for spatial planning and rural development policy.
• ANCT (Agence Nationale de la Cohésion des Territoires)coreStrategic or Co-development PartnerANCT co-organised the 1st local engineering forum in Yvelines with DDT. ANCT supports municipalities through programmes such as 'Petites Villes de Demain', 'Action Cœur de Ville', and 'Villages d'Avenir'. IngénierY' is part of the local engineering ecosystem presented at this forum.
• Fondation du PatrimoineminorStrategic or Co-development PartnerPartner at IngénierY's 10th anniversary forum. The foundation supports private donations and patronage for the restoration of heritage monuments in rural areas.
• VMF (Vieilles Maisons Françaises)minorStrategic or Co-development PartnerPartner at IngénierY's 10th anniversary forum. VMF is a national association dedicated to defending and enhancing historic rural properties.
• Fondation pour la Sauvegarde de l'Art FrançaisminorStrategic or Co-development PartnerPartner at IngénierY's 10th anniversary forum, contributing expertise on the restoration of artworks and interior church fittings.
• CCI Versailles-Yvelines (Chambre de Commerce et d'Industrie)minorStrategic or Co-development PartnerPartner in a commercial study jointly conducted with the Department of Yvelines (Direction des contrats, études et prospectives), published in November 2023. The study analysed the commercial offer in Yvelines by type and territory.
• Seine Yvelines EnvironnementminorStrategic or Co-development PartnerEnvironmental operator of the Conseil Départemental, fully dedicated to environmental issues in Yvelines territories. Partners with IngénierY' on the 'Brigades vertes' environmental insertion programme for rural green space maintenance.
• ActivitY' (Agence interdépartementale d'insertion)minorStrategic or Co-development PartnerIngénierY' partners with ActivitY' in the transversal support of 'Brigades vertes' — the green brigades created in 2017 for ecological maintenance and social insertion in rural Yvelines.
• ROOLE (electric vehicles in car-sharing)minorChannel Partner/ Reseller/ DistributorA convention was signed with ROOLE — a society providing electric vehicles in car-sharing — as presented at the April 2023 CA/AG meeting.

Scale indicators5 records

Recent moves7 records

Expansion highlights6 records

Others

• ADEME (Agence de la transition écologique): ADEME is the national public agency funding the environmental and energy transition. ADEME Île-de-France has a 2024-2026 partnership with IngénierY' for energy transition projects, renewable heat, and citizen energy initiatives.
• Fondation du Patrimoine: Fondation du Patrimoine is a national heritage foundation supporting private donations and patronage for rural heritage restoration. It partners with IngénierY' on heritage conservation programs and contributed to the agency's 10th anniversary forum.
• AMF (Association des Maires de France): AMF is the national association representing French mayors, co-organizing the annual 'Sauvez le Patrimoine de Votre Commune' heritage competition with IngénierY'. It defines municipal policy positions and convenes elected officials nationally.
• ALEC 78 (Agence Locale de l'Énergie et du Climat des Yvelines): ALEC 78 is the local energy and climate agency of Yvelines, partnering with IngénierY' in the RCR78 renewable heat network. It provides energy advisory to individuals and local authorities in the same territory, with overlapping but distinct clientele.
• UDD (Union des Départements pour l'Equipement): UDD is the national association of French departments involved in engineering and infrastructure. It serves as an industry association for departmental technical agencies like IngénierY' and convenes best practices across the ATD network.
• CAUE des Yvelines: CAUE des Yvelines is the departmental architecture, urban planning, and environment council. It provides free architectural advice to communes and individuals, with mission overlap in heritage advisory alongside IngénierY's heritage pole.

Direct peers

• ATD 71 (Agence Technique Départementale de Saône-et-Loire): ATD 71 is the Agence Technique Départementale de Saône-et-Loire, providing technical assistance to rural municipalities through the same departmental engineering model. Both organizations serve comparable rural constituencies with similar transversality in building, heritage, road, and energy services.
• ATD 16 (Agence Technique Départementale de la Charente): ATD 16 is the Agence Technique Départementale de la Charente, a French departmental engineering agency delivering technical assistance to rural municipalities in the same vein as IngénierY'. Both agencies share the departmental public agency model, multi-pole structure, and commune-funded member services.

Broad incumbents

• ANCT (Agence Nationale de la Cohésion des Territoires): ANCT is the national agency responsible for territorial cohesion, supporting municipalities through programs such as Petites Villes de Demain, Action Coeur de Ville, and Villages d'Avenir. IngénierY' participates in the ANCT-led local engineering ecosystem and partners with it on departmental forums.
• Cerema: Cerema is the national public agency for territorial expertise on risks, environment, mobility, and planning. It provides engineering and consultancy services to local authorities across France at a broader scope than IngénierY', which specializes in the Yvelines department.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• Xx.com/Ingeniery78
• Facebookfacebook.com/agenceIngeniery
• LinkedInlinkedin.com/company/agenceingeniery

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 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 IngénierY' - Agence Technique Départementale