As the summer holidays draw to a close, September is the time to reset, reconnect, and reignite ideas. For startups and scaleups in the MRDH region, the calendar is filled with opportunities to meet, learn, and grow together.

From drones and biotech to energy transition and urban development, here’s your roundup of the key events in September you won’t want to miss.

DroneHorizon 2025 – 4 September, The Hague

Kick off the month with DroneHorizon 2025 in The Hague, where government, industry, academia, and defense come together to advance drone technology. If you’re working in aviation, spatial intelligence, or innovative regulation, this is the place to share insights and build new connections.

After Summer BBQ – Planet B.io x Hollandbio, 11 September, Delft

Ease back into networking with the After Summer BBQ at Planet B.io in Delft. Hosted by Hollandbio, it’s the perfect mix of informal summer vibes and biotech-driven conversation, ideal for reconnecting with the ecosystem after the holidays.

Future Tech Fest 2025 – 11 September, Düsseldorf (Germany)

Looking to broaden your international horizons? Future Tech Fest 2025 takes place in Düsseldorf, Germany, bringing together pioneers in emerging technologies. Just a short trip from Rotterdam, it’s a valuable chance to expand your network and gain fresh inspiration beyond the region.

Recharge Earth — 17–18 September, Rotterdam Ahoy

Energy transition takes center stage at Recharge Earth in Rotterdam Ahoy. This two-day conference and expo gathers energy professionals, startups, and scaleups to accelerate sustainable innovation. If your focus is renewables, cleantech, or energy systems, this is your spotlight.

W70 “Samen Ruimte Maken” – 18 September, Rotterdam

End the month by diving into the future of real estate at the W70 ecosystem meetup in Rotterdam. Under the theme “Samen Ruimte Maken: Voor Toekomstvast Vastgoed”, this event unites startups, corporates, and urban developers to co-create resilient cities and property solutions.

NL Changemakers 2025 – 23 September, Halfweg (SugarFactory)

On September 23, head to the SugarFactory in Halfweg for NL Changemakers 2025, the flagship event by nlgroeit designed by entrepreneurs for entrepreneurs. It’s a high-energy conference where impact-driven founders and scaleups exchange strategies, insights, and inspiration.

Startup in Residence Demo Day (10th Edition) – 25 September, Provinciehuis Zuid-Holland, The Hague

The 10th edition of Demo Day is set for September 25 2025 at the Provinciehuis Zuid‑Holland (Building C) in The Hague. After six months of intensive collaboration, impact-driven startups will pitch innovative solutions for public sector challenges such as energy poverty, youth welfare, circular economy, and digital safety. A great opportunity to witness public-private innovation firsthand and connect with key stakeholders.

Ready to Jump In?

Mark your calendar, gather your team, and step into a month full of collaboration and inspiration. Whether you’re here to showcase your solution, explore partnerships, or simply recharge your network—the September agenda has something for every innovator in the MRDH region.

👉 Check out the full agenda and register for these events via our events page.