Hummelnest Accelerator is a Graz, Austria-based accelerator backing pre-seed and early-stage startups across the DACH region, with a focus on green transformation and technology sectors such as AI, Climate, CleanTech, Energy, FinTech, IoT and SaaS. It provides mentorship, networking and corporate partner access, and selected teams can receive Raiffeisen-Landesbank Steiermark investment of €50k per company.