Chile Completes World's Largest Solar Battery Hub

Chile just completed one of the world's largest solar and battery storage complexes, a decade-long project that proves clean energy can work at scale.

The Andes Solar Hub in Chile's Atacama Desert now combines 692 megawatts of solar panels with 510 megawatts of battery storage. That's enough to power hundreds of thousands of homes and keep the lights on for hours after the sun goes down.

The complex sits nearly two miles above sea level in one of Earth's driest places. What makes the location special is the same thing that makes it harsh: the Atacama gets more direct sunlight than almost anywhere on the planet.

AES Andes built the hub in stages over ten years, with the final piece clicking into place this April. The latest addition alone features 171 megawatts of solar panels paired with batteries that can store three hours of power.

The massive battery systems solve renewable energy's biggest challenge: what happens when the sun isn't shining. These lithium-ion batteries soak up excess solar power during the day and release it during peak evening hours when families come home and turn on their lights.

The Ripple Effect

This project does more than just generate clean electricity. The hub creates a bridge between Chile and Argentina's power grids, helping both countries share renewable energy across borders.

Chile is turning its geography into opportunity. The government reports that nearly 10,000 megawatts of the country's renewable energy now sits on public land in the sunny northern region. That's about a third of Chile's total renewable capacity.

The model is catching on. Chile plans to auction 32 more desert properties for similar projects by 2026, and 65% of the revenue flows directly back to local governments.

The complex also tested innovative technology, including prefabricated solar structures from Australian company 5B that snap together like building blocks. This modular approach cuts installation time and cost.

With 243 active energy concessions across Chile, the country is showing how nations blessed with tough terrain can transform sunlight into their most valuable export.