Startup Incubators and Accelerators in Nantes: The Guide [2026]
Nantes, Thursday morning on the Île de Nantes. Inside Startup Palace, a greentech founder is closing her first funding round. Two streets away at La Cantine Numérique, a developer out of Audencia is finishing the MVP of his SaaS product. The tram rolls past, the city breathes, and the startup ecosystem hums along quietly. Nantes isn't Lyon, and it isn't Paris, which is exactly what makes it a distinctive place to build early-stage. With around twenty incubators and accelerators listed by Nantes Métropole, roughly 300 active startups and 34,500 digital jobs, the city combines innovation, impact and accessibility. This guide covers the best support programs in Nantes in 2026, compares what they offer, and explains how to apply.
The Nantes startup ecosystem in 2026
Nantes is France's hub for greentech and impact innovation. That isn't regional marketing copy: it's a structural position built on two decades of public investment in the green transition, responsible tech and the social economy.
Nantes as a greentech and social innovation hub (key figures)
The local ecosystem in numbers:
- Around twenty incubators and accelerators across the Nantes-Saint-Nazaire area (source: nantes-saintnazaire.fr).
- Roughly 300 active startups and 34,500 digital jobs in the metropolitan area (source: portad.fr, 2025 overview).
- Atlanpole: 759 projects supported since it was founded, with an annual budget of around €3 million and 40 staff (source: Le Journal des Entreprises).
- KIVO (formerly the Centrale Nantes-Audencia incubator): strengthened in 2025 when Nantes Université joined its governance, creating a deeptech alliance unlike anything else in western France (source: incubateur-kivo.fr).
- Novapuls: an accelerator-investor founded in 2018, with offices in Nantes and Rennes (source: novapuls.fr).
Nantes plays to its natural strengths: greentech, health, responsible tech and the creative industries. The city attracts founders looking for a human-scale ecosystem, real estate costs below Paris (and Lyon), and a quality of life that makes the early bootstrapping years survivable.
French Tech Nantes and the entrepreneurial pull of western France
French Tech Nantes structures the local ecosystem and connects the city's startups to national and international networks. La Cantine Numérique, the French Tech Nantes flagship building, spans 1,800 m² with 180 coworking desks in the heart of the Quartier de la Création (source: lacantine.co).
Beyond French Tech, Nantes can lean on:
- Nantes Métropole Entreprises: the metropolitan support scheme, plus the Nantes Transitions fund (launched in 2021 with the Banque des Territoires) for positive-impact projects.
- PEPITE Pays de la Loire: the student-entrepreneur program, with the Spice Up competition spotlighting projects from the city's grandes écoles.
- A dense academic base: Centrale Nantes, Audencia, Nantes Université, Polytech Nantes, IMT Atlantique. The path from research to entrepreneurship is short here.
The structural advantage for a founder: in an ecosystem where everyone knows everyone, you can reach decision-makers within weeks. The network is tight and doors open fast. And the cost of living leaves you runway.
Generalist and institutional incubators
Generalist programs are the natural front door to the Nantes ecosystem. They take founders from every sector and plug them into the resources of the region.
Atlanpole (Pays de la Loire incubator, multi-sector: health, AI, environment)
Atlanpole is the innovation hub for western France. Founded more than 30 years ago, it wears three hats: regional incubator for publicly funded research (with multiple accreditations), Nantes technology park, and the Grand Ouest Atlantique innovation hub connecting labs, grandes écoles and companies (source: atlanpole.fr).
By the numbers:
- 759 projects supported since inception
- Annual budget: around €3 million
- 40 staff dedicated to supporting founders
- Sectors: health, AI, environment, industry, digital
Who it's for: founders of innovative projects coming out of publicly funded research, plus deeptech and science-based teams. Atlanpole is the obvious first stop if your startup was born in a lab at Nantes Université, Centrale Nantes or IMT Atlantique. Support covers technology maturation, business structuring and introductions across the regional economy.
How to apply: online application at atlanpole.fr. Selection favors genuine innovation, links to research, and the potential to create value in the region.
Atlanpole is the bedrock. The institution that feeds the rest of the Nantes ecosystem.
NovaPlus / NovaPuls (pre-acceleration then acceleration, innovative projects in western France)
NovaPuls describes itself as an accelerator-investor. Founded in Nantes in 2018, it replicated its model in Rennes in 2020 to cover western France. The program combines pre-acceleration (validating the project) and acceleration (commercial growth and fundraising), with a year of office space on site (sources: novapuls.fr, Le Journal des Entreprises).
Program:
- Duration: pre-acceleration plus acceleration, 1 year of hosting
- Model: direct investor (takes equity)
- Who applies: innovative startups across western France, all sectors
- Support: business development, fundraising preparation, mentoring
Who it's for: founders who want structured support from a financial partner with skin in the game. NovaPuls invests directly in the startups it accelerates, which keeps incentives aligned.
1Kubator Nantes (national network, 10 months, €25K funding, 10% equity)
1Kubator was founded in Lyon in 2016 and expanded quickly to more than 10 French cities, Nantes among them. The model is straightforward: €25,000 in funding for 10% equity, a 10-month incubation program, and access to a national network of startups and mentors (sources: innov-hub.org, b0uh.github.io).
By the numbers:
- Funding: €25,000 for a 10% stake
- Duration: 10 months
- Network: 10+ cities across France, 200+ startups in the national portfolio
- Focus: digital and tech
Who it's for: early-stage digital startups looking for first money and a structured program. The upside of a national network: you're incubated in Nantes but you get access to markets in every city the network covers. The price is known upfront (10% equity), with no surprises later.
How to apply: online at 1kubator.com. Applications are reviewed on a rolling basis throughout the year.
Impact and greentech incubators
This is where Nantes genuinely stands apart. The city's greentech and impact identity shows up in dedicated programs that no national guide covers properly.
SG Planète A (Société Générale, social and environmental impact startups)
SG Planète A is Société Générale's incubator for startups with social or environmental impact. Launched on the Île de Nantes, it recruits startups working on tangible change: energy, mobility, food, inclusion (sources: informateurjudiciaire.fr, entreprises.nantesmetropole.fr).
Program:
- Positioning: impact startups, backed by Société Générale
- Location: Île de Nantes
- Support: coaching, corporate mentoring, access to the SG network
- Who applies: early-stage startups with a measurable impact model
Who it's for: impact founders who want the backing of a major banking group while keeping their independence. The draw is access to Société Générale's clients and partners, a commercial lever few impact incubators can offer.
Imagination Machine (impact startup studio)
Imagination Machine is an impact-focused startup studio based in Nantes. The model differs from a classic incubator: Imagination Machine co-creates the companies, bringing the idea, the early build and the initial funding. You join as an operating cofounder.
Who it's for: entrepreneurs who would rather join a project that's already moving than start from a blank page. The studio model suits operators (tech, business) looking for a validated idea and a structured setting.
La Cantine Numérique (coworking plus support, Nantes Digital)
La Cantine Numérique is the French Tech Nantes flagship building: 1,800 m², 180 coworking desks, and a support program for the region's digital startups (sources: lacantine.co, nantes-numerique-responsable.org).
By the numbers:
- 1,800 m² of space
- 180 workstations
- Location: heart of the Quartier de la Création, Île de Nantes
Who it's for: digital startups that want to sit at the center of the local French Tech community. La Cantine isn't an incubator in the strict sense (there's no structured equity program), but it's where the ecosystem converges. Investors, mentors and other founders all pass through. The network gets built in the hallways.
Accelerators and corporate programs
Beyond the public and impact players, Nantes has corporate accelerators that bring a business network and instant credibility.
Village by CA Atlantique Vendée (24 months of support)
Village by CA Atlantique Vendée is part of the national Villages by Crédit Agricole network: 37 interconnected Villages across France, 900 startups supported, 600 partner companies (source: levillagebyca-atlantiquevendee.fr).
Program:
- Duration: up to 24 months
- Cost: free (no equity taken)
- Support: mentoring, introductions to companies across the CA partner network
- Who applies: innovative startups and SMEs in the region
Who it's for: B2B startups that want fast access to a network of SME and mid-cap customers. Village by CA is a commercial accelerator above all: you find your first customers there, not funding. It's a no-dilution model, which is both rare and valuable.
Startup Palace (incubator plus accelerator, city-center offices)
Startup Palace is a well-established Nantes player with more than 130 startups supported since it launched. Based at 4 rue Voltaire in the city center, it runs an incubation and acceleration program with investment tickets of up to €250,000 (source: ouest-france.fr).
By the numbers:
- 130+ startups supported
- Investment tickets up to €250,000
- Location: central Nantes (4 rue Voltaire)
Who it's for: tech and digital startups looking for funding alongside hands-on support. Startup Palace combines incubation with direct investment, a model close to NovaPuls but with a longer track record in Nantes.
KIVO (Centrale Nantes, Audencia, Nantes Université)
KIVO is the incubator born from the alliance between Centrale Nantes, Audencia and, since 2025, Nantes Université. Formerly the "Centrale-Audencia-Ensa incubator," it was renamed to reflect the deeptech, cross-disciplinary energy behind its projects (source: incubateur-kivo.fr).
By the numbers:
- 3 partner grandes écoles and universities
- Air Launch deeptech program plus the generalist Accelerate track
- Partner of the Concours Coup de Pouce (Fondation Le Roch-Les Mousquetaires)
- Two portfolio startups featured on M6's "Qui veut être mon associé ?" in 2026
Who it's for: students, alumni and researchers from Centrale Nantes, Audencia and Nantes Université. KIVO is the bridge between academia and the market. If your project came out of a research lab or a degree program at any of those three institutions, this is your first door. Nantes Université joining widens the range of skills and technologies you can tap considerably.
How to apply: regular calls for applications at incubateur-kivo.fr. A selection committee assesses motivation, innovation potential, and fit with the incubator's areas of expertise.
How to choose an incubator in Nantes
You've read the list. Now the real question: which one? The answer comes down to three variables: your stage, your sector, and what you're willing to give up.
Selection criteria (greentech/impact vs generalist, stage, equity)
By stage:
- Ideation / pre-launch: NovaPuls (pre-acceleration), La Cantine Numérique (network)
- Founding / MVP: 1Kubator (€25K, 10 months), KIVO (academic deeptech), Atlanpole (public research)
- Growth / scale: Startup Palace (tickets up to €250K), Village by CA (commercial network)
By sector:
- Greentech / impact: SG Planète A, Imagination Machine
- Deeptech / research: Atlanpole, KIVO
- Digital / SaaS: 1Kubator, Startup Palace, La Cantine Numérique
- Generalist: NovaPuls, Village by CA
By cost:
- Free / no equity: Atlanpole, La Cantine Numérique, Village by CA
- Equity: 1Kubator (10%), NovaPuls (varies), Startup Palace (varies)
Quick comparison of the Nantes programs
The key points for each:
- Atlanpole: public research, multi-sector, free, long-term
- NovaPuls: accelerator-investor, 1 year of hosting, western France
- 1Kubator: 10 months, €25K, 10% equity, national network
- SG Planète A: impact, SG corporate backing, Île de Nantes
- Startup Palace: 130+ startups, €250K tickets, city center
- KIVO: deeptech, academic, Centrale + Audencia + Nantes Université
- Village by CA: 24 months, free, SME and mid-cap network
- La Cantine: coworking plus French Tech network, 1,800 m²
Preparing your application
Three ways to improve your odds:
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Know your stage. Each incubator targets a specific moment in the founder journey. Don't apply to 1Kubator with nothing but an idea, and don't waste your time on NovaPuls if you're already at €500K ARR.
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Show traction, not the dream. Selection committees want evidence: first users, LOIs from prospective customers, a working prototype. Even at pre-seed, show that someone wants what you're building.
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Apply to several programs. Nantes is small enough that the incubators all know each other, and applying to two or three in parallel is perfectly acceptable. It reads as ambition.
FAQ
What are the best incubators in Nantes?
The main programs are Atlanpole (regional incubator, 759 projects supported), KIVO (deeptech, Centrale Nantes + Audencia + Nantes Université), 1Kubator (national network, €25K in funding) and Startup Palace (130+ startups, tickets up to €250K). The right choice depends on your sector and stage: Atlanpole for publicly funded research, KIVO for academic deeptech, 1Kubator for early-stage digital.
How do you get into an incubator in Nantes?
Most Nantes incubators run regular calls for applications. Put together a solid case: the problem you've identified, what makes your solution different, and early traction signals (users, LOIs, a prototype). Committees weigh the founder's drive, innovation potential, and fit with the program's expertise. Expect 2 to 8 weeks between applying and hearing back.
Are there greentech incubators in Nantes?
Nantes is France's greentech and impact hub. SG Planète A (Société Générale) recruits startups with social or environmental impact on the Île de Nantes. Imagination Machine is a startup studio dedicated to impact. Atlanpole also supports projects tied to the environment and the green transition. The Nantes Transitions fund (Nantes Métropole + Banque des Territoires) finances positive-impact projects in the region.
What's the difference between an incubator and an accelerator?
An incubator supports projects from the ideation or founding stage: shaping the business model, building the product, landing first customers. An accelerator comes in later, once the product exists, to drive commercial growth and prepare a funding round. In Nantes, Atlanpole and KIVO are incubators, while NovaPuls and Village by CA are accelerators. Some programs, like 1Kubator and Startup Palace, do both. For a deeper look at the distinction, see our complete guide to incubators and accelerators in France.
Further reading
- How to choose a startup accelerator
- Incubators and accelerators in Paris
- Incubators and accelerators in Bordeaux
- Incubators and accelerators in Lille
- Incubators and accelerators in Strasbourg
