What Société des grands projets does

Société des grands projets is a French public-sector establishment, founded in 2011 following the Grand Paris public debate, charged with planning and delivering the Grand Paris Express — a 200 km automated metro network comprising 68 stations across five lines (14, 15, 16, 17, 18) serving the Île-de-France region. Approximately 80% of stations will interchange with the existing RER, metro, tram, and Transilien networks, and the system is designed to connect suburban areas (petite and grande couronne) without routing through central Paris. The target ridership is 3 million daily passengers once fully operational, with phased openings starting in 2024 and continuing through the late 2020s.

The technical backbone is fully automated, driverless metro infrastructure constructed using tunnel boring machines, with 90% of the system built underground. Sustainability engineering is a deliberate differentiator: Société des grands projets developed the proprietary CarbOptimum tool (2012) for lifecycle carbon analysis, deployed low-carbon concrete across 90% of the network (40% smaller carbon footprint than conventional concrete), fibre-reinforced voussoirs on Line 16, and low-carbon recycled-steel rails first on Line 16 then extended to Lines 17 and 15 South. All operations centres are HQE-certified (excellent or exceptional level), and station design conforms to BREEAM and LEED standards. The construction process generates 49 million tonnes of spoil, of which 56% is reused (target 70%) and 13.5% is moved by river or rail rather than road.

As a government-sponsored infrastructure entity, Société des grands projets does not operate a commercial revenue model. The organization is financed through public investment, regional contributions, and bond issuances; day-to-day operations and ticketing will be handled by transport operators (RATP and others) under the Île-de-France Mobilités framework once lines enter service. Complementary public-facing assets include La Fabrique du métro visitor center, guided construction-site observations, virtual-reality tours, an interactive 3D network map, a travel-time simulator, and the Classes du Grand Paris Express school program. The end customer base consists of Île-de-France commuters, residents of inner and outer suburbs, and educational stakeholders — a diversified mass-market public.

Name

Société des grands projets

Legal name

Société des grands projets

Website

https://societedugrandparis.fr

Company type

Private

Founded year

2011

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

Société des grands projets is a French public entity, founded 2011, building the Grand Paris Express — a 200 km, 68-station automated metro network across five lines serving 3 million daily Île-de-France commuters and publicly funded rather than commercially sold.

Ownership category

akta.pro rank

Product category

Urban Rail Infrastructure Construction

NAICS

Urban Transit Systems (48511)

SIC

Local & Suburban Transit & Interurban Hwy Passenger Trans (4100), Transportation Services (4700)

akta.pro primary industry

Intercity Rail Passenger Service Integrators (Through-Ticketing/Code-share) (THAIAAAH)

Keywords

• Urban rail infrastructure
• Automated metro systems
• Public transit construction
• Subway network development
• Metro infrastructure delivery

Headquarters

HQ city

Saint Denis

HQ country

France

HQ region

Europe

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Distribution channels1 record

Marketing channels9 records

Core offering

Société des grands projets is the French public entity responsible for designing, financing, and constructing the Grand Paris Express, an automated driverless metro network spanning 200 km with 68 stations across the Île-de-France region. The entity delivers five metro lines (Lignes 14, 15, 16, 17, and 18) that connect Paris's inner and outer suburbs without requiring travel through central Paris. Operations are funded entirely through public investment, regional contributions, and bond issuances, with no consumer fare revenue collected by the entity itself.

Product overview

The Grand Paris Express is a major public transit infrastructure project consisting of five automated metro lines (Lignes 14, 15, 16, 17, and 18) spanning 200 km with 68 stations serving the Greater Paris metropolitan area. The network is designed to connect suburban areas without passing through central Paris, serving approximately 3 million daily passengers. Beyond the core metro infrastructure, the project offers complementary visitor and educational services including La Fabrique du métro (visitor center), guided construction site observations, virtual reality tours, an interactive digital map, and a trip simulator. The network integrates with existing Île-de-France transit systems (RER, metro, trams) at 80% of stations.

Differentiator

Problem solved

Functional benefit

Products and services

• Ligne 14 Automated metro line 14 extending and integrating into the Grand Paris Express network, connecting major hubs from Saint-Denis – Pleyel to Orly Airport. Fully automated driverless operations serving daily commuters in the Île-de-France region.
• Ligne 15 Circular automated metro line encircling Paris, divided into South, East, and West sections. Connects Pont de Sèvres to Noisy – Champs in the south, Saint-Maur – Créteil to Stade de France in the east, and La Défense to Saint-Cloud in the west.
• Ligne 16 Automated metro line 16 serving the northeastern suburbs, connecting La Courneuve – Six Routes to Chelles – Gournay with 11 stations. First to use fibre-reinforced concrete voussoirs and low-carbon recycled steel rails.
• Ligne 17 Automated metro line 17 serving the northeastern sector including Le Bourget Airport, Parc des Expositions, and Charles de Gaulle Airport terminals. Installed low-carbon recycled steel rails on this line as part of the green infrastructure programme.
• Ligne 18 Automated metro line 18 serving the southern region, connecting Antonypole – Wissous Centre to Versailles – Chantiers, serving key destinations including Paris-Saclay University, Polytechnique, and CEA.

Quantifiable outcome

• 10.9 million tonnes CO2 equivalent reduction over 20 years of operation
• +6 more outcomes

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Scale indicators11 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• MTR Corporation: Hong Kong's integrated metro developer-operator with global consulting (Rail+Property model) — comparable for the combination of metro delivery and rail-adjacent real estate development, and for advisory on international metro projects.
• Transport for London (TfL): Statutory body responsible for London's transport network — comparable as a publicly mandated urban transit authority integrating new lines into a broader legacy network, the institutional parent of Crossrail's delivery model.
• Metro de Madrid: Public operator and extended builder of Madrid's metro network, including major expansion — comparable as a European publicly owned metro entity engaged in both operations and infrastructure delivery.
• RATP Group: The historic Paris-area transit operator that will run the new Grand Paris Express lines; comparable as the operational counterparty in the project and as a major international metro operator.

Direct peers

• Metroselskabet (Copenhagen Metro): Public owner-operator of Copenhagen's automated driverless metro network — comparable as a publicly mandated transit authority building and operating automated metro in a European capital region.
• Land Transport Authority (LTA) Singapore: Singapore's government land-transport authority owning and delivering metro expansion — comparable as a state-led urban rail infrastructure delivery organization with long-horizon capital plans.
• Crossrail / TfL Elizabeth Line: A flagship UK state-delivered urban rail mega-project (Crossrail Ltd under TfL oversight) building a 100+ km new rail line through central London — directly comparable in scope, public-mandate governance, multi-decade build cycle, and operational handoff to a pre-existing operator.
• Qatar Rail (Doha Metro): State-owned entity delivering a brand-new fully-automated driverless metro system in Doha — comparable as a greenfield, large-scale automated metro build-out under government mandate, with similar phasing and operational complexity.
• Arriyadh Development Authority (Riyadh Metro): Saudi government authority delivering the 176 km Riyadh Metro — comparable as a multi-line driverless urban rail build executed under state authority and funded through public capital.

Emerging players

• Bangalore Metro Rail Corporation (BMRCL): Indian state-owned joint venture delivering a new metro system in a major metropolitan region with phased openings — comparable as a publicly mandated metro-build entity in a different geography executing a multi-phase build-out.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/GdParisExpress
• YouTubeyoutube.com/@Societedesgrandsprojets
• Facebookfacebook.com/GrandParisExpress
• LinkedInlinkedin.com/company/grand-paris-express
• Instagraminstagram.com/grand_paris_express

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 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 Société des grands projets