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SOLIDEO

SOLIDEO was created by French law in 2017 as a dedicated project-delivery vehicle for the Paris 2024 Olympic and Paralympic Games, chaired by Paris Mayor Anne...

SOLIDEO logo

SOLIDEO

SOLIDEO was created by French law in 2017 as a dedicated project-delivery vehicle for the Paris 2024 Olympic and Paralympic Games, chaired by Paris Mayor Anne Hidalgo. Its sole mandate was to conceive, finance, and hand over permanent and temporary competition venues plus the supporting athlete and media villages — a concentrated burst of infrastructure build that had to transition into functioning, mixed-use city districts after the closing ceremony. The agency marshaled a portfolio of 70 distinct structures spanning Saint-Denis, Seine-Saint-Denis, Dugny, and Marseille. Landmark assets include the Olympic and Paralympic Village (Seine-Saint-Denis) — now converting into 2,800 housing units, offices, and retail — the Media Village at Dugny, the Arena Porte de la Chapelle, and the Saint-Denis Aquatics Center. Construction was sequenced through a layered framework of public-sector contracting, Grand Paris Aménagement co-investments, and a 1% Artistique cultural program embedded at every major site. By end-2025, 95% of the post-Games legacy conversions had been completed, according to the firm’s own reporting, with the remaining 5% — comprising final-fit-out residential towers and a sports center — tracking for a full 2028 handoff. Under founding executive Nicolas Ferrand and successor Yann Krysinski (promoted in September 2024), SOLIDEO operated with a compact governance spine of board oversight and direct ministerial reporting lines. While headcount is undisclosed, the agency drew on seconded public-works engineers, town planners, and sustainability auditors from across France’s État-urbanisme apparatus. Its approach to risk — codified in a formal “convention d’objectifs” and a shared deviation-tracker across contractors — allowed it to absorb Covid-era supply-chain shocks without schedule slip. In fall 2025, the entity began publishing a series of open-source methodological reports on environmental performance, accessibility, SME insertion, and jobsite safety, framing them as a national public-good “intangible legacy.” The agency is scheduled to be absorbed into Grand Paris Aménagement by 2028, sunsetting SOLIDEO’s charter once the final legacy apartments are key-ready. What separates SOLIDEO from a conventional Olympic-delivery authority is its legally mandated self-liquidation. The governance structure requires the agency to transfer both completed assets and its institutional knowledge to successor public bodies, then dissolve — turning the typical mega-event developer lifecycle of cost overruns and white-elephant venues into a hard-coded exit. That forced sunset, paired with the granular methodology suite the agency is now publishing, produces a replicable playbook for future host cities rather than another opaque state enterprise.

General information

Firm type

Government / Public Body

Year founded

2017

Location

Region

Europe

Country

France

City

Paris

Corporate office

Paris, France

Principals

Yann Krysinski

Executive Director General (CEO)

Altss tracks 2 additional named team members for this firm — including direct investment leads, IR, and operating principals not listed on the public website.

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Sector focus

Real EstateInfrastructureSports & Events

Frequently asked questions

Who runs investment and delivery decisions at SOLIDEO?

Execution authority rests with the Executive Director General, a role held by Nicolas Ferrand from 2017 to 2024 and by Yann Krysinski since September 2024. The Board of Directors, chaired by Paris Mayor Anne Hidalgo, sets strategic objectives and approves the annual budget. Operational decisions — contractor selection, schedule adjustments, cost-varianceremediation — flow through the executive office using a standardized deviation-tracking protocol the agency published as part of its 2025 methodology transfer.

How did SOLIDEO source and manage its contractor pool?

SOLIDEO operated under EU public-procurement directives, issuing open tenders for each venue package. The agency imposed minimum quotas for small and medium enterprises (SMEs) and social-economy entities, reporting that these firms captured a material share of contract value. A proprietary risk- management tool tracked contractor performance against a unified 'convention d’objectifs,' and any schedule or cost variance was flagged in a collegial review process that brought the relevant local authority, project owner, and contractor to the same table within days.

Does SOLIDEO function like a state development bank or a project-management office?

More the latter. Unlike a development bank, SOLIDEO did not hold a permanent balance sheet, originate loans, or take equity positions. It acted as the central program manager — bundling public appropriations, coordinating with co-investor Grand Paris Aménagement, enforcing design-and-build contracts, and then handing finished assets to end-users such as cities and housing operators. Its closest analogue is an Olympic-specific infrastructure SPV with a statutory sunset clause.

What happens to SOLIDEO’s assets after 2028?

All physical assets — the Olympic and Paralympic Village, the Media Village, the Arena Porte de la Chapelle, the Ladoumègue Sports Centre, and 65 other structures — transfer to municipal or regional ownership. SOLIDEO’s organizational shell is scheduled to be integrated into Grand Paris Aménagement, the regional master-planner that was already a co-investor on several venues. The agency’s methodological reports and tools become a public digital commons, explicitly designed to be reused by future host cities and large-scale infrastructure programs.

Did SOLIDEO manage the operational overlay of the Games?

No. SOLIDEO’s remit stopped at physical delivery and post-Games conversion. The operational overlay — security, transport, athlete services, ceremonies — was the responsibility of the Paris 2024 Organizing Committee (COJO), led by Tony Estanguet. SOLIDEO and COJO coordinated on venue readiness timelines, but they were legally separate entities with distinct governance and funding sources.

What is the 1% Artistique Olympic Program?

It is a mandatory cultural-integration framework that embedded public art commissions into SOLIDEO’s construction budgets across multiple Olympic sites. The program derived from France’s long-standing ‘1% artistique’ requirement — allocating roughly 1% of construction cost to site-specific artworks — and was executed in collaboration with local cultural bodies. Specific artist-and-venue pairings were documented in SOLIDEO’s post-delivery reporting.

Where does SOLIDEO’s funding come from?

Funding is a mix of central-government budget allocations, contributions from host local authorities (including the City of Paris and Seine-Saint-Denis), and co-financing from regional planning body Grand Paris Aménagement. Private revenue from post-Games apartment and office sales flows to the end-owners, not to SOLIDEO. The agency’s 'on budget' claim refers to holding its own multi-year delivery envelope flat despite pandemic-era cost pressures.

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