Startup Incubators and Accelerators in Nantes: The Guide [2026]
Nantes, a Thursday morning on the Île de Nantes. Inside the Startup Palace offices, a greentech founder is closing her first funding round. Two streets away, at La Cantine Numérique, a developer who trained at Audencia is finishing the MVP of his SaaS product. The tram rolls by, the city breathes, and the startup ecosystem hums along quietly. Nantes is not Lyon. Nantes is not Paris. And that is exactly what makes it a unique place for early-stage founders. With around twenty incubators and accelerators counted by Nantes Métropole, roughly 300 active startups, and 34,500 digital jobs, the Nantes ecosystem combines innovation, impact, and accessibility. This guide lists 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. This is not regional marketing spin: it is a structural position built on two decades of public investment in the ecological transition, responsible tech, and the social economy.
Nantes, a hub for greentech and social innovation (key figures)
The Nantes ecosystem in a few data points:
- Around twenty incubators and accelerators counted 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 its founding, with an annual budget of around 3 million euros and 40 staff (source: Le Journal des Entreprises).
- KIVO (formerly the Centrale Nantes-Audencia incubator): strengthened in 2025 by the arrival of Nantes Université in its governance, creating a deeptech alliance that is unique in western France (source: incubateur-kivo.fr).
- Novapuls: an accelerator-investor founded in 2018, based 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 lower than Paris (and Lyon), and a quality of life that helps you get through the early bootstrap years.
French Tech Nantes and the entrepreneurial energy of western France
French Tech Nantes structures the local ecosystem and connects Nantes startups to national and international networks. La Cantine Numérique, the flagship building of French Tech Nantes, spans 1,800 m² with 180 coworking desks at the heart of the creative quarter (source: lacantine.co).
Beyond French Tech, Nantes relies on:
- Nantes Métropole Entreprises: a metropolitan support program, along with the Nantes Transitions fund (launched in 2021 with the Banque des Territoires) for positive-impact projects.
- PEPITE Pays de la Loire: a student-entrepreneur program, with the Spice Up competition that showcases projects from the region's top schools.
- A dense academic fabric: Centrale Nantes, Audencia, Nantes Université, Polytech Nantes, IMT Atlantique. The bridges between research and entrepreneurship are short.
The structural advantage of Nantes for a founder: in an ecosystem where everyone knows everyone, you can reach decision-makers within a few weeks. The network is dense and doors open quickly. And the cost of living leaves you runway.
Generalist and institutional incubators
Generalist programs are the natural entry point into the Nantes ecosystem. They welcome every sector and connect founders to the resources of the region.
Atlanpole (Pays de la Loire incubator, multi-sector: health, AI, environment)
Atlanpole is the regional innovation hub for western France. Founded more than 30 years ago, it combines three functions: the regional incubator for public research (multi-accredited), the Nantes technology park, and the Grand Ouest Atlantique innovation hub that connects labs, top schools, and companies (source: atlanpole.fr).
In numbers:
- 759 projects supported since its founding
- Annual budget: around 3 million euros
- 40 staff dedicated to support
- Sectors: health, AI, environment, industry, digital
Who is it for? Founders of innovative projects born out of public research, along with deeptech and science-based founders. Atlanpole is a must if your startup comes out of a lab at Nantes Université, Centrale Nantes, or IMT Atlantique. Its support covers technology maturation, business structuring, and connections across the local economy.
How to apply: Online application at atlanpole.fr. Selection favors innovation, ties to research, and the potential to create value in the region.
Atlanpole is the foundation. The institution that feeds the rest of the Nantes ecosystem.
NovaPlus / NovaPuls (pre-accelerator then accelerator, innovative projects in western France)
NovaPuls describes itself as an accelerator-investor. Founded in 2018 in Nantes, it replicated its model in Rennes in 2020 to cover western France. The program combines pre-acceleration (validating the project) and acceleration (commercial development and fundraising), with a one-year residency in its offices (source: novapuls.fr, Le Journal des Entreprises).
Program:
- Duration: Pre-acceleration + acceleration, one-year residency
- Model: Direct investor (equity stake)
- Audience: Innovative startups from western France, all sectors
- Support: Business development, fundraising preparation, mentoring
Who is it for? Founders who want structured support with an aligned financial partner. NovaPuls invests directly in the startups it accelerates, which aligns interests.
1Kubator Nantes (national network, 10 months, €25K funding, 10% equity)
1Kubator was founded in Lyon in 2016 and quickly expanded to more than 10 French cities, including Nantes. The model is clear: €25,000 in funding in exchange for 10% equity, a 10-month incubation program, and access to a national network of startups and mentors (source: innov-hub.org, b0uh.github.io).
In 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 is it for? Early-stage digital startups looking for first funding and structured support. The advantage of the national network: you are incubated in Nantes, but you can reach the markets of every city in the network. The price is known upfront (10% equity). No surprises.
How to apply: Online application at 1kubator.com. Rolling selection throughout the year.
Impact and greentech incubators
This is where Nantes really stands out. The city's greentech and impact identity is reflected in dedicated support programs that no national guide covers properly.
SG Planète A (Société Générale, startups with social/environmental impact)
SG Planète A is Société Générale's incubator dedicated to startups with a social or environmental impact. Launched on the Île de Nantes, it recruits startups that want to change things concretely: energy, mobility, food, inclusion (source: 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
- Audience: Early-stage startups with a measurable impact model
Who is it for? Impact founders who want the backing of a major banking group without losing their independence. The appeal: access to Société Générale's clients and partners, a commercial lever that few impact incubators can offer.
Imagination Machine (impact startup studio)
Imagination Machine is a startup studio dedicated to impact, based in Nantes. The model differs from a classic incubator: Imagination Machine co-creates startups, providing the idea, the early development, and the initial funding. You join as an operational cofounder.
Who is it for? Entrepreneurs who want to join a project that is already underway rather than start from scratch. The startup studio suits operational profiles (tech, business) looking for a validated idea and a structured framework.
La Cantine Numérique (coworking + support, Nantes Digital)
La Cantine Numérique is the flagship building of French Tech Nantes: 1,800 m², 180 coworking desks, and a support program for the region's digital startups (source: lacantine.co, nantes-numerique-responsable.org).
In numbers:
- 1,800 m² of space
- 180 workstations
- Location: heart of the creative quarter, Île de Nantes
Who is it for? Digital startups that want to be at the center of the local French Tech community. La Cantine is not an incubator in the strict sense (no structured equity program), but it is where the ecosystem converges. This is where you cross paths with investors, mentors, and other founders. The network gets built in the hallways.
Accelerators and corporate programs
Beyond the public and impact programs, Nantes has corporate accelerators that bring a business network and immediate 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 stake)
- Support: Mentoring, introductions to the CA network's partner companies
- Audience: Innovative startups and SMEs in the region
Who is it for? B2B startups that want fast access to a network of SME and mid-market clients. Village by CA is a commercial accelerator above all: this is where you find your first customers, not funding. It is a no-dilution model. Rare and valuable.
Startup Palace (incubator + accelerator, city-center offices)
Startup Palace is a well-known Nantes player with more than 130 startups supported since its founding. Located at 4 rue Voltaire in the city center, it offers an incubation and acceleration program with investment tickets of up to €250,000 (source: ouest-france.fr).
In numbers:
- 130+ startups supported
- Investment tickets up to €250,000
- Location: Nantes city center (4 rue Voltaire)
Who is it for? Tech and digital startups looking for funding and hands-on support. Startup Palace combines incubation and direct investment, a model similar 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 embody the deeptech and cross-disciplinary momentum behind its projects (source: incubateur-kivo.fr).
In numbers:
- 3 partner schools and universities
- The Air Launch deeptech program + the Accelerate generalist program
- Partner of the Coup de Pouce competition (Fondation Le Roch-Les Mousquetaires)
- Two startups featured on "Qui veut être mon associé ?" on M6 in 2026
Who is it for? Students, alumni, and researchers from Centrale Nantes, Audencia, and Nantes Université. KIVO is the bridge between academia and the market. If your project comes out of a research lab or a program at one of these three institutions, this is your first entry point. The arrival of Nantes Université significantly broadens the range of skills and technologies you can access.
How to apply: Regular calls for applications at incubateur-kivo.fr. A selection committee evaluates motivation, innovation potential, and fit with the incubator's areas of expertise.
How to choose your incubator in Nantes
You have read the list. Now the real question: which one to choose? The answer depends on three variables: your stage, your sector, and what you are willing to give up.
Selection criteria (greentech/impact vs generalist, stage, equity)
By stage:
- Ideation / pre-launch: NovaPuls (pre-acceleration), La Cantine Numérique (network)
- Launch / 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 (variable), Startup Palace (variable)
A snapshot comparison of Nantes programs
Here are the key criteria for each program:
- Atlanpole: Public research, multi-sector, free, long-term
- NovaPuls: Accelerator-investor, 1-year residency, western France
- 1Kubator: 10 months, €25K, 10% equity, national network
- SG Planète A: Impact, SG corporate, Île de Nantes
- Startup Palace: 130+ startups, tickets up to €250K, city center
- KIVO: Deeptech, academic, Centrale + Audencia + Nantes Université
- Village by CA: 24 months, free, SME/mid-market network
- La Cantine: Coworking + French Tech network, 1,800 m²
Preparing your application
Three tips to maximize your chances:
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Know your stage. Each incubator targets a specific moment in the founder journey. Do not apply to 1Kubator with just an idea, and do not waste your time at NovaPuls if you already have €500K in ARR.
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Show traction, not the dream. Selection committees want proof: early users, LOIs from potential clients, a working prototype. Even at pre-seed, show that someone wants what you are building.
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Apply to several programs. Nantes is small enough that the incubators know one another. Applying to two or three programs in parallel is not frowned upon. It signals 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 choice depends on your sector and stage: Atlanpole for public research, KIVO for academic deeptech, 1Kubator for early-stage digital.
How do you get into an incubator in Nantes?
Most Nantes incubators run on regular calls for applications. Prepare a solid file: a clearly identified problem, a differentiating solution, and early signs of traction (users, LOIs, prototype). Committees assess the founder's motivation, innovation potential, and fit with the program's areas of expertise. Expect 2 to 8 weeks between applying and hearing back.
Are there greentech incubators in Nantes?
Nantes is France's hub for greentech and impact. SG Planète A (Société Générale) recruits startups with a 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 ecological transition. The Nantes Transitions fund (Nantes Métropole + Banque des Territoires) finances positive-impact projects in the region.
What is the difference between an incubator and an accelerator?
An incubator supports projects from the ideation or launch phase: structuring the business model, building the product, landing first customers. An accelerator comes in later, once the product already exists, to speed up commercial growth and prepare a fundraising round. In Nantes, Atlanpole and KIVO are incubators, while NovaPuls and Village by CA are accelerators. Some programs, like 1Kubator and Startup Palace, combine both. To dig deeper into the distinction, see our complete guide to incubators and accelerators in France.
Going further
- How to choose your startup accelerator
- Incubators and accelerators in Paris
- Incubators and accelerators in Bordeaux
- Incubators and accelerators in Lille
