ISA–GRIHA hosted competition · Integrating Solar in Urban Network
Build for the islands the climate crisis hits first.
A global student design challenge for buildable, replicable solar architecture across Small Island Developing States.
island coastline, solar-integrated
architecture (BIPV roofs / shading),
warm dusk light
About the i-SUN Challenge
Solar architecture where resilience is survival.
i-SUN mobilises architectural creativity and solar technology to deliver buildable, replicable renewable-energy architecture for Small Island Developing States. Across three real island sites, student teams — paired with a practising architect and a solar-industry partner — design for a solar-rich, fuel-scarce, climate-exposed context where resilience is survival. Open to architecture and engineering institutions worldwide.
BIPV / passive-design features
on an island building
The island sites
One real site. Three candidate nations.
Participants select their site during registration. Drawings and climate data unlock after registration, per team code — a one-page teaser per site is public below.
Key dates
From launch to the Grand Jury.
Recognition
A total prize pool of to be announced for winners and runners-up.
Trophies, jury citations, and publication in the Winners' Compendium. Full breakdown on the Prizes page.
View full prizes