We help stadiums, arenas, and large venues cut emissions, reduce costs, and modernize – without disrupting the fan experience.
Empowering Venues Across Europe
Clean Energy. Sustainable Operations. Future – Ready Infrastructure.
Making Venues Greener, Smarter, Stronger.
The Green Alliance, powered by SUNEL Group, helps Europe’s leading venues become more sustainable, intelligent, and resilient.
Whether it’s powering a stadium or transforming a district, we coordinate the expertise and investment needed to get complex projects off the ground – efficiently, collaboratively, and with long-term impact.
Delivering Lasting Impact
Scaling Impact.
Arena by Arena.
Our goal is to deploy 1,000 MW of clean energy across Europe’s venues – through solar, storage, and smart infrastructure.
That’s the equivalent of powering 400 to 500 basketball arenas with sustainable, on-site energy.
With Your Support, Change Happens
The Green Alliance made its official debut at the FIBA Basketball Champions League Final Four in May 2025, powered by SUNEL Group.
What’s Next For Your Venue?
From early planning to long-term operation, we work with venue owners, leagues, cities, and developers to bring complex projects to life.
Whether you’re exploring solar, storage, or full-scale upgrades, The Green Alliance helps you move with confidence – backed by the right expertise, funding model, and execution partners.
About SUNEL Group
SUNEL Group is a leading international provider of integrated solutions for renewable energy projects – specializing in solar PV, battery energy storage systems (BESS), and energy efficiency.
Headquartered in Athens, with regional offices in London, Valencia, Milan, and Bucharest, our team of 400+ experts delivers large-scale, high-performance clean energy projects across Europe and beyond.
At the heart of SUNEL’s mission is a commitment to empowering change – in energy, in infrastructure, and in the communities we serve.
