02Working on a cleaner, more efficient planet

As climate has a huge impact on our industry, our lives and our planet in general our focus is on CleanTech startups. The clean tech landscape is changing extremely fast. Costs of solar modules are down 20% every year, one cent per kWh leveled cost of electricity is within reach in the solar sector this year, or in 2019! Besides solar & wind, CleanTech includes biomass, EVs, and for example recycling. In the essence clean tech is about increasing productivity, while decreasing cost, energy use, pollution and general impact on the environment.

Operating as a startup within this industry can be very challenging. Profits are under pressure, costs need to go down constantly and growth is a must to keep up with the trend. With corporate partners as Eneco and Shell, YES!Delft is perfectly suited to find launching customers for your products & services, and with international partners like Climate KIC and KIC InnoEnergy, YES!Delft is also able to go across borders. Furthermore, we have a close collaboration with Greenvillage (TU Delft) and the Sustainable Energy Technology master at TU Delft.

energy XL: A collaboration between Rockstart, InnoEnergy & YES!Delft

Together with two other leading accelerator and incubator programs in the Netherlands, we are teaming up for the first time to launch EnergyXL: a joint initiative with a goal to provide the most relevant support to the best startups out there. Startups can apply for the programs by Rockstart, InnoEnergy, and YES!Delft at the same time and receive tailor-made offers according to their needs and growth stage.

Click here to go to the EnergyXL website!

03CleanTech Mentors

04CleanTech Companies

Eternal Sun
Solar Monkey
Solar Works
Recycling Avenue
Flexsol Solutions

05CleanTech Partners

Royal Haskoning DHV
Volker Wessels

06CleanTech Programs

Discovery track

2 x 0,5 day workshop over a period of 1 month to find your inner entrepreneur, meet your co-founder & get a taste of the YES!Delft community.

More info

About this program

  • Goal: During the Discovery Track you get a flavour of entrepreneurship, you meet like-minded entrepreneurial people and prepare to apply for Validation Lab. This program is not area-specific.
  • What: 4 hr crash course on customer discovery – 30 days for individual customer discovery – 4 hr crash course on value proposition design. Teams will be formed during the workshop if you don’t have a partner.
  • Selection criteria: Entrepreneurial mindset, innovative idea and/or co-founder wish.

If you have any questions about our programs, contact Emma (Startup Scout) or sign up for our monthly info session.


€50,- (exc. VAT) per person*. The fee covers program costs, workshop material and coaching.

*In some cases, it might not be possible to work on your own idea. However, access to all tools and workshop materials (canvasses, post-its and presentations) are guaranteed.

  • Discovery Track All Focus Areas
    Deadline October 17, 2018
  • Discovery Track All Focus Areas
    Deadline November 19, 2018

Validation Lab

3-month pressure cooker, 1 day per week to enable early stage startups to validate their business idea and find their product/market fit.

More info

About this program

  • Goal: Find your market/product fit. We use methods from Steve Blank’s Lean Launchpad and Alexander Osterwalder’s Value Proposition Design. You will test the correctness of your assumptions by talking to as many potential customers as possible. Validation Lab is the way to prepare for our acceleration program.
  • What: 3 months of validation with weekly peer-to-peer sessions and workshops. Receive input and feedback from fellow participants, experienced trainers and personal mentors. Your result will be a market/product fit, a validated customer segment and a value proposition design that responds to the actual needs of your customer.
  • Meet the Startups: Validation Lab alumni can participate in Meet the Startups: a day dedicated to showcasing, networking, speed dating and matchmaking. The event is focused on facilitating effective connections between companies, potential clients and/or potential investors
  • Selection criteria: innovative technology, team of 2 or more cofounders.
  • *DISCLAIMER: Upon admission you are guaranteed to get access to our CleanTech-specific network and mentors. However, in some cases we will combine startups from different fields (AI, Robotics, Aviation, MedTech etc) in order to stimulate cross-over knowledge transfer.

If you have any questions about our programs, contact Emma (Startup Scout) or sign up for our monthly info session.


Commitment fee of €1250,- (exc. VAT) per team of 2 founders and €500 (exc. VAT) for every next founder participating in the program. The fee covers program costs, working space, workshops, lunch & drinks, access to YES!Delft network, coaching and workshop materials incl. books, brainstorm canvasses.

  • Validation Lab Aviation, CleanTech, Artificial Intelligence, Robotics, MedTech
    Deadline January 15, 2019

    Accelerator Program

    A part-time 3-month program to enable your company to accelerate!*

    *Smart Energy startups can apply for our program via EnergyXL: a collaboration between Rockstart, InnoEnergy and YES!Delft.

    More info

    About this program

    • Goal: Set the foundation of your business, sell your first pilot.
    • What: 3 months of intensive work on getting the basics right, build entrepreneurial skills and plan for growth. Workshops from setting up a legal entity to masterclasses on sales and negotiations, we support you in becoming a true scalable innovative tech company.
    • Mentoring: We believe you have to learn from the best. You will be linked to an experienced serial entrepreneur who guide and supports you along the way
    • Next steps: At the end of this program you’ll set up a milestone plan for rapid acceleration. You’ll have learned how to cope with challenges related to a fast growing tech company, including team dynamics. You’ll have office space at YES!Delft, you’ll be part of our startup community and have landed your first sales. You’ll be ready for our follow-up Growth Program.
    • Selection criteria: innovative technology, team of 2 or more cofounders, defined product/market fit
    • *DISCLAIMER: In order to stimulate cross-over knowledge transfer, we combine startups from different fields (AI, Robotics, Aviation, MedTech etc) within our Accelerator Program. In addition we offer field-related network and mentorship.

    If you have any questions about our programs, contact Emma (Startup Scout) or sign up for our monthly info session.


    We do NOT take equity.

    We work with a split success fee of €25.000 which will be reinvested into the program:
    – when generating €200.000 in revenue -> €5.000
    – when generating €1M in revenue -> €20.000

      07Get a taste

      Discover YES!Delft and our startups!

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      Are you our new PR coordinator? (1,0 FTE)
      30 Jul 2018

      Are you our new PR coordinator? (1,0 FTE)

        As PR coordinator you play an essential role in building YES!Delft’s – and our startups’ – image and brand. How? Read on! 🚀   THIS...

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      6 Jun 2018


      YES, the moment is finally here. We are thrilled to announce that our new YES!Delft logo was placed on the building on Friday last week....

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      08Do you have any questions?

      Do you have any questions about the programs or are you interested in more information about the selection process?
      Emma Kluwen Startup Scout YES!Delft +31 628504045 [email protected]